Document Xe2zJ6Mo82z2YBOnX8dXDqpK

OPERATING MANUAL AMS EMERGENCY KILL SYSTEM ABERDEEN PVC PLANT September I, 1981 FINAL ISSUE Work by: iv viin 1 vi v* nc 1 1 1 ny Senior Process Engineer Chemicals Division Phocess Engineering Department DTH 000097414 conoco Interoffice Communication To C. L. Miller, Aberdeen, Mississippi From R.D. Mel ling, Ponca City, Oklahoma Oat* September 1, 1981 Subject Emergency Kill System Operating Manual The final issue of the Emergency Kill System Operating Manual is attached. This issue incorporates comments and suggestions from the August 18 plant review meeting. Richard D. Mel 1ing Senior Process Engineer Chemicals Division Process Engineering Department ms Enc CC: RAF:SJV:PEM:JAD:MPB CRM:JAB:JLW:JHM File: A-20.3 DTH 000097415 TABLE OF CONTENTS OPERATING MANUAL AMS EMERGENCY KILL SYSTEM ABEROEEN PVC PLANT Page No. I. INTRODUCTION.................................................................................................................. 1 A. PURPOSE..................................................................................................................1 B. OPERATOR RESPONSIBILITIES ........................................................................... 1 C. PROCESS INFORMATION ........................................................................................ 1 II. GENERAL PROCESSDESCRIPTION ................................................................................. 3 III. SAFETY................................................................................................................................5 IV. OPERATING PROCEDURES...................................................................................................... 8 A. INJECTION PROCEDURES................................................ 8 B. ROUTINE OPERATION ............................................................................................ 12 C. TESTING PROCEDURES................................................................................................ 15 V. APPENOIX................................................................................................................. 17 VI. PS I DIAGRAMS..................................................................................................................... 26 DTH 000097416 Page 1 I. INTRODUCTION A. Purpose The purpose of the Emergency Kill System is to increase the re liability and effectiveness of equipment and procedures used t to safely and quickly stop the polymerization reaction in the reactors. Stopping the reaction prevents excessive pressure buildup which can cause emergency releases through the reactor relief valves. This system allows any or all reactors to be shut down in an orderly and safe manner. This manual describes the system and the operator's responsibilities for operating and maintaining the system. B. Operator Responsibilities i The operator is responsible for producing quality products in a safe and efficient manner. He fulfills his responsibilities by knowing the following and passing a written exam: 1. Understanding how his equipment functions. i 2. Understanding what role each piece of equipment plays in the process. \ 3. Keeping a close and regular check on equipment. 4. Knowing how to spot malfunctions and correct them. 5. Keeping his area of responsibility safe and clean. 6. Keeping complete and accurate records. C. Process Information The polymerization reaction of VCM to form PVC gives off heat ^>-N and accelerates as temperature increases. As the temperature increases, the reactor pressure also increases. It is there fore necessary to remove the heat of reaction with cooling DTH 000097417 INTRODUCTION (CONTINUED) C. Process Information (Continued) water in the reactor jacket and condenser. Reactor agitation is also required to maintain uniform reactor mixing and efficient heat removal. If reactor cooling and/or agitation is lost, the reaction must be stopped. Failure to do so would result in a runaway reaction with increasing temperature and pressure. The reac tor pressure could increase until the rupture disk/safety valve assemblies would vent the reactor contents to the atmosphere. The new Emergency Kill System provides the capability of in jecting up to 25 gallons of killing agent into each reactor either remotely from the control room or manually at the re actor top head platform. Killing agent can be injected into a reactor as soon as agitation is lost to take advantage of mixing caused by residual swirling motion. Maintaining cool ing water flow after loss of agitation will also help mixing by refluxing in addition to removing heat of reaction. DTH 000097418 Page 3 II. GENERAL PROCESS DESCRIPTION Refer to the attached Pel diagrams for the complete system layout for each reactor area. Emergency kill injection pots are provided at grade level for each reactor. All injection pots are to be maintained at 300 psig pressure using high pressure nitrogen cylinders. A separate nitro gen cylinder and spare are provided for each injection pot. Level gauges and pressure gauges are provided on each pot in addition to board-mounted low pressure alarms and low level Indicators. The A operator should check the appropriate injection pot level and pressure before starting each reactor charge sequence. Killing agent can be injected into the reactor either remotely by the lead operator or locally by the A operator. Normally, the emergency kill system will be activated from the board to minimize time and maximize mixing. One switch for each reactor operates automatic double block valves at the reactor top head level. Placing the switch in automatic mode opens the valves and allows a low level switch in the injection pot to close the valves. Placing the switch in the momentary-contact manual mode also opens the valves but the valves close when the switch is released. Each injection pot low level switch also activates a local light at the manual injection point at the reactor top head level. The auto matic closure of the remote injection valves and the local low level indicator light are provided to prevent nitrogen from being injected into the reactor, blanketing the condenser and reducing cooling efficiency. DTH Q00097419 r^ / Page A II. GENERAL PROCESS DESCRIPTION (CONTINUED) Emergency injection headers are provided at the reactor top head level in each reactor area. These headers will allow any injec tion pot to be used to kill any reactor in each area or to inject additional killing agent if needed. The procedure requires two hoses, one to connect an injection pot to the header, and one to connect the header to the reactor. Killing agent can then be in jected locally by the A operator or remotely by the lead operator. It should be noted that when the emergency injection header is used, the injection pot low level switch will neither automatically close the remote injection valves nor light the appropriate local indicator light. Caution should be taken to prevent charging nitro gen into the reactor. The remote injection automatic valves will be operated by nitrogen supplied by a high pressure nitrogen cylinder and spare. A boardmounted low pressure alarm is provided for each area to alert the board operator when the cylinder in use has dropped below 600 psig. A cylinder with less than 600 psig pressure does not contain enough nitrogen to operate the control valves and should be immediately changed out with a full cylinder. I ! dth oou / Page 5 III. SAFETY The operation of the emergency kill system does not present any extremely hazardous situations. In fact, it's main purpose is to i reduce the potential for having hazardous situations in the reactor area. However, some potential hazards are present and precautions should be taken to prevent serious incidents. A. The killing agent AMS has been in use for some time in the plant and the operators should already be familiar with the corresponding safety hazards and proper handling procedures. The attached vendor literature describes chemical properties and safe handling procedures. It should be emphasized that AMS is highly reactive in the presence of the peroxide ini ( tiators used in the plant. AMS AND INITIATOR SHOULD NEVER BE ! \ MIXED UNDER ANY CIRCUMSTANCES. II 8. The new AMS injection pots will be maintained at 300 psig by high pressure nitrogen cylinders. Due caution should be exer cised in the handling of nitrogen cylinders. Operators should avoid damaging the outlet valves on these cylinders. The AMS \ injection pots will contain AMS under 300 psig pressure, so / proper safety precautions should be taken while working with or near these vessels. \ The injection pots must be depressurized before the block valves on the pot funnel or AMS fill line are opened. The nitrogen supply to a pot should be turned off at the pot prior to vent ! ing the pot. The pots should only be vented through the bleed valve on the pressure gauge/pressure switch piping on the top of the pots. POTS SHOULD NEVER BE VENTED THROUGH THE FUNNELS ON THE SIDE OF THE POTS. I DTH 000097421 Page 6 III. SAFETY (CONTINUED) C. The rupture disk and relief valve assemblies for each injec tion pot are set to relieve at *00 psig, the vessel design pressure. Since nitrogen bottle regulators occasionally leak through, a potential exists for overpressuring the injection pots and causing the rupture disk to burst. Even if the killing agent didn't spray out when the relief devices opened, it is probable the relief valve would not completely reseat and the nitrogen bottle would slowly depressure through the pot and relief valve to atmosphere. The outside operator should routinely check injection pot pressures to insure it is neither too low nor too high. D. The AMS killing agent is a volatile hydrocarbon, and thus fire and explosions are theoretically possible. Precautions should be taken to prevent spills and excessive accumulation of flam mable vapors. E. Since the injection pots are connected to the reactors, a poten tial exists for backing VCM into the pots. This poses no serious immediate problem since the AMS would kill any reaction that was occurring. However, it could present an exposure problem later when the injection pot is opened. The injection pots should be maintained at 300 psig pressure except when re filling. F. Finally, operators should keep in mind that this system will be used when the plant is in an upset condition, i.e., power failure, loss of cooling water, reactor runaway, etc. It is DTH 000097422 Page 7 ^ III. SAFETY (CONTINUED) critical that this system must operate properly in such an emergency. System maintenance and operator familiarity with this system are equally important factors ensuring the dependability of this system. Page 8 IV. OPERATING PROCEDURES A. Injection Procedures 1. The emergency kill system should be activated under the following circumstances: a. Extended ioss of cooling water to a reactor in poly merization mode. b. Extended loss of agitation to a reactor in polymeriza tion mode. When agitation is lost, it is Important to kill the reaction as soon as possible. The reactor * contents will continue to swirl for about four minutes after agitator shutdown, and AMS injection during this period is much more effective. c. A runaway reaction with increasing temperature and pres sure which is not responding to small AMS Injections (short stop) from the initiator charge pot. d. Any other circumstance considered by the operator to represent a significant chance of over pressuring the reactor or affecting safe operation of the plant. 2. The emergency kill system must be activated if the reactor reaches the following pressures for the following products: a. 5305 with CTA 155 psig b. 5305 without CTA 165 psig c. All other products 145 psig 3. Lead Operator Duties a. The lead operator should remotely inject AMS Into the polymerizing reactors which require killing by placing the appropriate hand switches In the AUTO mode. DTH 000097424 Page 9 IV. OPERATING PROCEDURES (CONTINUED) A. Injection Procedures (Continued) 2. Lead Operator Duties (Continued) b. The lead operator should then check for confirmation of AMS injection from the board-mounted low level indicat ing lights, and from the A operator via radio. In jection time should be about 30 seconds. The boardmounted injection pot low pressure alarms will normally be tripped during AMS injection. If the pressure and level alarms are not tripped, the automatic AMS injection line may be plugged requiring manual injection. c. After AMS injection, the lead operator should closely monitor the reactor temperature and pressure. If cool ing water has been lost, he should take steps to restore cooling as soon as possible. d. If additional killing is required, the momentary-contact manual switch can be used. Caution should be exercised to prevent nitrogen from entering the reactor and blanket ing the condenser. e. If excess nitrogen does enter the reactor, the condenser should be vented to the recovery system. 3- A Operator Duties a. The A operator is responsible for field-checking AMS injection to each of the reactors to be killed. He should confirm that the injection pot level is at the low level mark on the level gauge. Too high a level DTH 000097425 Page 10 IV. OPERATING PROCEDURES (CONTINUED) A. Injection Procedures (Continued) 3- A Operator Duties (Continued) means not enough AMS was injected. No level may mean nitrogen has entered the reactor. b. The A operator should also check the pressures of the nitrogen cylinders used for AMS injection. Any cylinder with a pressure lower than 750 psig should be changed out to allow for a second AMS in jection. c. After checking the injection pot and nitrogen cylinders, the A operator should proceed to the reactor top ^ level to confirm that the automatic injection valves are closed. If the valves are open, he should man ually block in the line and inform the lead operator that nitrogen has entered the reactor. It may be necessary to vent nitrogen to the recovery system to maintain reactor cooling. d. If the automatic injection system failed to work, the A operator should manually inject AMS to the re actor. He should open the manual double block injection valves, wait for the injection pot low level indicator light to light, then immediately close the double block valves. The valves should also be immediately ^ closed if the line begins to vibrate from flowing nitrogen. y. 000097426 Page 1 i IV. OPERATING PROCEDURES (CONTINUED) A. Injection Procedures (Continued) 3- A Operator Duties (Continued) e. If additional injection is required, the A operator should prepare the emergency injection header for use. This header is supplied to allow any injection pot to be used for any reactor. This is accomplished by connect ing one hose from a full and pressurized pot to the header and connecting a second hose from the header to the appropriate reactor. Injection can then proceed either locally or from the board. Caution should be exercized when using this header since the injection pot low level switches will not work correctly and nitrogen may enter the reactor. f. As soon as possible after injection, the A opera tor should refill the empty AMS pots and prepare for a second injection if needed. 1. Close the block valve on the nitrogen supply line at the pot. 2. Depressure the pot through the pressure gauge vent valve. 3. Refill the pot with AMS from a 55-gallon drum using the air operated drum pump supplied with the system. An alternate filling procedure is to manually pour AMS into the funnel on the side of the injection p0t' DTH 000097427 Page 12 1V. OPERATING PROCEDURES (CONTINUED) A. Injection Procedures (Continued) 3. A Operator. Duties ^Continued) f. (Continued) 4. Block in the pot and repressure with nitrogen from the nitrogen bottles. g. Radio communication between the lead operator and the A operator should be maintained. The A operator should inform the lead operator how the system is operating and what is being done in the field. The lead operator should keep the A operator Informed of reactor pres sures and any apparent need for additional AMS injec tion. B. Routine Operation 1. A reactor should not be charged unless its AMS injection system is in proper operating condition. It is the respon sibility of the A operator to check this in the field and notify the lead operator, prior to each reactor charge. The following items should be checked immediately before each charge: a. The AMS level in the injection pot should be at the full mark on the level glass. b. The pressure in the injection pot should be 300 psig. This should be checked both on the injection pot pressure guage and on the nitrogen cylinder regulator outlet pressure guage. DTH 000097428 Page 13 IV. OPERATING PROCEDURES (CONTINUED) B. Routine Operation (Continued) c. The block valve in the AMS line near the injection pot should be fully open. d. The block valve in the AMS line at the reactor top head level near the hose connection should be fully open. e. Both block valves on the manual AMS injection line should be fully closed. If any of the above conditions are not met, they should be corrected before the reactor is charged. 2. To insure proper operation of the system, the following items should be checked by the A operator at the beginning of each shift: a. The pressure of the nitrogen cylinders being used for AMS injection should be at least 1200 psig. Cylinders with lower pressures should be changed out with full cylinders. EMPTY BOTTLES ARE NOT TO BE LEFT IN THE BOTTLE RACKS. b. The pressure of the nitrogen cylinder being used to actuate the automatic AMS injection valves should be at least 600 psig. Cylinders with lower pressures should be changed out with full cylinders. The pres sure on the outlet of the regulator for this cylinder should be 100 psig. DTH 000097429 Page 14 IV. OPERATING PROCEDURES (CONTINUED) B. Routine Operation (Continued) c. The pressure gauges between the double block valves on both the automatic and the manual injection lines should routinely be bled to 0 psig. If pressure sub sequently builds up on these guages, it indicates that one or both of the double block valves are leaking. Note: These gauges will have pressure on them after AMS Injection. d. All spare nitrogen cylinders in the racks should be full, i.e., cylinder seals are intact. The above items are vital to the proper operation of the emergency kill system. If any of these conditions are not met, they should be immediately corrected. 3. Other Items which should be checked on a routine basis are: a. The automatic AMS injection line reactor nozzles should be checked for plugging. This can be done while the reactor is being rinsed. Full port ball valves have been provided on this line so that a rod or long wire brush can be run through the line to knock out plugging. This line should be checked once a week when the system is being tested. b. The manual AMS injection line reactor nozzles should also be checked for plugging on a weekly basis. This should be done in a manner similar to that used for checking the automatic injection line. DTH 000097430 Page 15 IV. OPERATING PROCEDURES (CONTINUED) C. Testing Procedures 1. The AMS injection system for each reactor will be tested weekly on a schedule set up by the process superintendent. Each system will be checked for line pluggage and valve operation. The testing procedure is outlined below: a. The A operator should perform a complete visual check of the system to be tested both at grade level and at the reactor top head level. b. He should then contact the lead operator on the radio and confirm that the reactor and Emergency Kill System are ready to be tested. c. He may then manually inject approximately one gallon of AMS to the reactor by opening the manual injec tion valves for approximately two seconds. d. After AMS has been injected manually, the A operator should close the block valve near the hose connec tion and notify the lead operator that the automatic system is ready for testing. The lead operator may then remotely cycle the Injection valves using the momentary-contact MANUAL mode of the control valve hand switch. e. During automatic AMS injection testing, the A operator should be checking for proper operation of the system, i.e., control valves, actuators, and solenoids. DTH 000097431 Page 16 IV. OPERATING PROCEDURES (CONTINUED) C. Testing Procedures (Continued) f. After automatic injection testing, the A operator should rod out the vertical sections of" line at both reactor injection nozzles to confirm the nozzles are not plugged. 3. The following must be done following a test prior to charging the reactor: a. The pot should be refilled with AMS. b. The pot should be pressurized to 300 psig. c. The AMS injection nitrogen cylinder pressure should be checked (above 1200 psig). d. The pressure of the nitrogen cylinder used to supply instrument air to the automatic AMS injection control valves should be checked (above 600 psig). e. The manual block valve at the reactor top head level near the hose connection should be reopened. DTH 000097432 Page 17 V. APPENDIX DTH 000097433 STORAGE AND HANDIJNG OF ALPHA-METHYL STYRENE Page 18 Alpha-Methyl styrene Is usually stored and handled in steel equipment. It is also compatible with stainless steel, aluminum, and galvanized iron. Copper and copper alloys are not recommended for this service. This product has a fairly low freezing point (about -10oF) and low viscosity. Underground storage tanks and lines should be considered, as their use will prevent freezing in winter and keep the product cool in summer. Storage temperature should not exceed 100`F. Storage under a nitrogen blanket is preferred; exclusion of air (oxygen) will reduce the chances of polymerization, peroxide formation, and fire. Piping can be of the materials listed above. A centrifugal pump is suggested for transfer service. "Teflon" is suitable for gaskets and packing. An inhibitor, para-tertiary butyl catechol (10-20 ppm), is used in alpha-methyl styrene to inhibit polymerization. If storage time is prolonged, the inhibitor concentration should be checked occasionally and more inhibitor added, if needed. Alpha-Methyl styrene is a toxic chemical; contact with liquid or vapors shouLd be avoided. DTH 000097434 Ct- M E T H Y L S T Y R E n E Page 19 CHEMICAL NAME: Q-Methy Is tyrene SYNONYMS: CHEMICAL FORMULA: I sopropenylbenzene, alpha-methylstyrene, 2-phenylpropene, 1-methyl-1-phenylethylene c9h10 CHEMICAL STRUCTURE: ch3 Appearance................................................................................................. Water-white liquid Mo 1 ecu 1 ar wei gh t..................................................................................... 118.18 Flammability limits, vol %, upper................................................... lower................................................... Flash point, open cup, C (Tag)........................... ........................... closed cup, C (Tag)...................................... ............. 6.1 1.9 52 (126F) 44 (U2F) Autoignition temperature in air, C............................................... 575 (1066F) Borling point at 760 nun Hg, C......................................................... 165 4 at 10 mm Hg, C.............................................................. 48.5 Freezing point, C................................................................................. -23.2 V.jpor pressure, inm Hg at 20C........................................................... 1.9 Solubility, wt % in water..................................................................... <0.1 (20C) water in..................................................................... <0.1 Specific gravity at 20/4C........................................................ .. 0.9106 Heat of vaporization at 1 atm, Btu/lb............................................ Heat of combustion at 25C, Btu/lb................................................. Coefficient of expansion at 20C, vol/C...................................... 140 17,743 0.00096 Viscosity at 20C, cps............................................................................ 0.94 Revised 3/15/76 DTfl..000097435 H I-OIIY 1ST VRllilt; || -- Page 20 Some significant reactions with the more common chemicals are briefly discussed below: Oxidation - forms aldehydes and peroxides if exposed to air (oxygen). Can be epoxidized and is attacked by strong oxidizing agents. h/drogenation Can be hydrogenated ca talytical ly in the presence ~ of metals. The unsaturated vinyl group and the aromatic ring can both be hydrogenated under selective conditions. Halogenation - Characteristic addition to the vinyl group and substitution on the aromatic ring can occur with halogens such as chlorine or bromine. These exothermic addition reactions generally require catalysts and/or elevated temperatures and are not considered hazardous if properly controlled. However, reaction with chlorine which occurs at ambient tem peratures can be violent in the presence of light. Accidental contact of CX-tnethy 1 styrene with halogens or halogen-containing compounds must be prevented. Acids - Under special conditions, the aromatic ring may be attacked by concentrated nitric or sulfuric acids. These reactions must be carefully controlled to avoid hazardous consequences. Also, hazardous oxidation may occur by contact with concentrated nitric acid. Hethoxyl a tion - f'(- Methyl styrene can be reacted under special condi tions with formaldehyde or CO-II2 in the presence of a catalyst to yield an aldehyde or alcohol. This reac tion is considered to be nonhazardous as it is un likely to occur accidentally. The above discussed reactions other than oxidation, halogenation, and polymerization are generally considered to be nonhazardous. However, when conducted in the plant or laboratory, all of the reactions of f- methyl styrene should be properly controlled to avoid hazardous consequences. vised 3/15/76 If the UCC customer wants to use rubber hoses for unloading tank trucks, the recommended materials are Vi ton A or polyethylene lining! and steel or 304 SS fittings. Both Uni royal arid Goodyear manufacture rubber hoses with a Viton A or polyethylene liner. . Other elastomers such as neoprene, butyl, buna-N, etc., are not recommended for handling AMS becaus they will be chemically attacked by the AMS. Another type of hose that can be used is 304 SS flexible metal hose. f/^ T>TH 000097436 A-METHYL SITRENE Tliis is ci summary of single exposure studies on onimcils. The dolu indicate the relative deyiee oi ha.'.urd in handling the product. Increasing degrees of hazard are expressed by th< so terms: slight, moderate, definite, serious. If must be remembered that results of experiments on animals cannot be numerically translated to probable human response. of Itiff lubsioncc in the quantity frequency and manner >'n9ic inhalation refers to continuously breathing a certain concentration of chemical vapori (or a jpccifiod period of time. The term tOi0 hat been adopted o> a uniform cuprct* iit.m of dfujle dene tonicity for comparing one chcmicoi with (mother. It refert to that quantity of chemical which Lilli 50 por cent of exposed animali. For further uniformity, wonhii*v ore expreued in grann or milliliicn of chemical per Lilogrom of animal body weight. Eye injury refer* to surface damage produced by con* tael of tho eye with the chemical. legal reiponsibihiy ii auumed only for the foci that oil *<udU;i reported here, ond oil opinion*, oro ihote of qualified expert). Single oral dose In rats: moderate hazard. LD50 = ^.50 Per kilogram of body weight. For comparison, isopropanol has an LD^q of 5.84 grams/kg. Single skLn penetration in rabbits: slight hazard. 16.0 ml/kg body weight killed 3 of 7 animals from a 24 hour covered exposure. Thia result nuggests that skin penetration in harmful amounts is not apt to occur. Single Inhalation by rats: slight hazard. Breathing vapors in a state approaching saturation in room air for 8 hours killed 2 of 6 animals. Skin Irritation, rabbit belly: moderate hazard. Hie undiluted chemical caused redness of short duration on the tender skin of the rabbit belly. Eye injury, rabbits: slight hazard. The undiluted chemical caused no irritation when an excess was instilled in the rabbit eyes. TYPED 5/24/77 For Further Information Write To: Industrial Medicine and Toxicology Department UNION CARBIDE CORPORATION DTH 000097437 II .7: I II 11 I uim II ^d *- I o \ I 1 I ro cm n* | O . ?d I ^ 1 o ov r-. o CM in CM rs o O < -- -j - < <"J o in m oo cm n O <510 CO UJ C3 X a to *- oLU cXo> QQ C X--, uCj u. 2 o zz o 2; Page 22 ra v r; cq <-- < -u . ; < &> . cc 5055=6 CJ xa; n < o .t: nj a a-> 'o-T"'CU Ea. n 3, r - lO eeev CO CO 55fifi5?s fr i. --m cm m -- mc 130 c*--7: t xai ,: COC- O CM O O Cm -- iO ao> o o o K3 Ho 1 o -s -X -- V 5? o oCJ O. O ~ S k`0 E o nj 6 S C G IfS? x;<oof-o e ^o => d on </* < 5 <s> ai o; Oov oOr* s owo II oo n co co oCM S3 I CO wo o 0(0 V II mo oo v CM f- /) O O | - 1I a511 BIS II ? I8 001 icno cino o ucoo CM -- o r*-. o cm CM o in cm o co NWO C<M OC>O0 uj OpO cS iO O O r f> CM CM o CM i- __ wCMo c<m mCM (( -wo :o . Cm --'o ro (?, cm uo t ? : c CJ : oOl 2 : c iu Se .( uCCil. ^xr -S .y o oc t -- a <= >- > - R : o5 of : 8 & c g* coc^.fiU f-4 O d s .G-i>E.cL'r* owfC=O:-tiTi j <\l jjj Jj 4Q 8u80-85.8 :2 5522 V?5 c Tn t c: 2k CJ uj O xi !2.2 SiJf[ oJU r *" *>T u5v* TM Cl K O > * .m M c 1? i/) o "o V) l 5 1 SB C c 7- c -o 5 ^ CJ li U O > x x k5 S c f, tj O o UJ I'M 04 CO CVJI (j M CJ 1 VJ co 3 C cCj'Sn5- c= .S 5 S ^ > 6 3 O J- o ....* , " " .9 g s-- S- ni &" 3f o Uy o M X**c-o*.1 ' fl -w ,>u.Col xj o>> Qn o j< r r`` CVI c"* ^ i -* Ji 3k UJ UJ se r O 2 It CJ o X s y f < T JZ o u I :J!2. k ei jj c ,, - d . Cl XX C Q i ' uC nV)S <tl e -- & 2r S . S J *! lJ*,,O4 :sYSs) 5PJ - , & J:sS t? : o : 5* a ,, 'Vr F i Sw UuS *E3 2cOcC^aJ S--sj g_-,P5tn 25 jC"5sknS--u3y 2 O .. &n o -y 2 '5 WH "" >* c io- ..Sx 'jo,^*i io;>I -o5>- v(_4/t>*(n*4V*xJO*2:'5>(j JC"vs.*cx- s1oSVjsjl ?>^UK-->?v>X.=2x'uO?5 2.., . :. J*->?5ni ---- J4cri`i 3J5ur*5^<<s* C . cm Zi rz s I25t: -- j Ol ai I I 13 1 Owcoo MmvO II cm cm cv o o wo m `'.o'Si ^ II I I i Mill r i CM O < co -3 O OW CTO MO <O cs in d < oCM CM i.O =< wc> s 2 IfS 1 ls I" co o O o O *0 CM ri-N X) c 5' < <' MATERIAL SAFETY DATA SHEETII.. 23{Approved by U.S. Department r>( Labor "Essentially Similar" to form LSB OOS 4) Page .,, JYi- PRODUCT NAME: a/pha-METHYLSTYRENE CHEMICAL NAME: -- CHEMICAL FAMILY; Aryls FORMULA: C0.KC5 tCH J:CH,, MOLECULAR WEIGHT: 118.18 SYNONYMS: Isopropenylbonzene; a -methylstyrene; 2-phonyIpropene; 1-methyl-1-phenylethylcne BOILING POINT, 760 mm. Hg SPECIFIC GRAVITY (H20 1) v i iphysical data 165.4C.(329.7F.) J FREEZING POINT ' .^...1 U.... ..... -23.2C. 0.9116 at 20/20C. 1 j VAPOR PRESSURE AT 20C. 1.9 mm. Hg VAPOR DENSITY (air = 1) PER CENT VOLATILES BY VOLUME 4,1 ~100 j SOLUBILITY j IN WATER. % by wt. j EVAPORATION RATE j (Butyl Acetate = 1) 0.06 0.22 APPEARANCE AND ODOR Colorless liquid; characteristic odor. II. HAZARDOUS INGREDIENTS MATERIAL Methylstyrene i l oo % TLV (Units) ^lOO^m. ceiling (See Sections III through VIII) / t FLASH POINT | tost mcthod{s)l III. FIRE AND EXPLOSION HAZARD DATA 112?., Tag closed cup ASTM 0 56 126F.. Tag open cup ASTM D 1310 FLAMMABLE LIMITS IN AIR. % by volume LOWER 1.9 UPPER EXTINGUISHING MEDIA Use carbon dioxide or dry chemical for small fires. Use foam (alcohol, polymer, or ordinary) for large fires. 6.1 SPECIAL FIRE FIGHTING PROCEDURES Self-contained breathing apparatus should be available to firemen. UNUSUAL FIRE AND EXPLOSION HAZARDS None DTH 000097439 ' EMERGENCY PHONE NUMBER 304/744-3487 This number is available days, nights, weekends, and holidays. vvti> r L>n*cn C.ntude Corporation behoves (tut itu* oj(:i contained hcn?n are (actual and (he opinions ORpraisod are thoso ol Qualified Cipertt regarding the results of the lasts curst!.in* data are not 10 be taken ;i* a w.xi:anfy 011 ooreseAlabOA tor winch Union Carbide Corporation assumes legal responsibilitv They are offered solely lor your consideration, investnjatiuo. .tint venitcauon Any use ol i'vk u.it.i and miomution must be determined by ltx> user to be in accordance with applicable Federal. State, and local laws and regulations uMinrvt rarrictp i U.S AND PLASTICS 270 PARK AVENUE. NEW YORK, N Y, 1001 7 ,. ..... ........-*; THRESHOLD LIMIT VALUE V. IV. HEALTH HAZARD DATA 100 ppm. -- not to be exceeded. Value from ACGIH (1976) Pa9e ** EFFECTS OF OVEREXPOSURE Vapors cause irritation of eyes, nose, and throat. Headache, nausea, and vomiting may occur. Eyes are irritated by the liquid. I EMERGENCY AND FIRST AID PROCEDURES Remove to fresh air and call a physician. In case of contact, flush skin or eyes with plenty of water for at least 15 minutes. Call a physician for eyes. I7 ";W-data STABILITY UNSTABLE STABLE --V CONDITIONS TO AVOID Avoid heat and open flame. ( INCOMPATIBILITY [materials to avoid) Avoid contamination with oxygen, strong acids, chlorine. HAZARDOUS 'DECOMPOSITION PRODUCTS Burning can produce carbon monoxide and/or carbon dioxide. HAZARDOUS POLYMERIZATION May Occur Will not Occur CONDITIONS TO AVOID 1V -- Avoid contamination with peroxides, strong mineral acids, metal halides, and similar polymerization catalysts. Para-tertiary butyl catechol is used as inhibitor; maintain its concentration at 10-20 ppm. ;teps to be taken F MATERIAL IS RELEASED )R SPILLED VA5TG DISPOSAL METHOD VIJ SPILL OR LEAK PROCEDURES Wear suitable protective equipment. Collect for disposal. Toxic to fish; avoid discharge to natural waters. See Section VIII. Incinerate in a furnace where permitted under appropriate Federal, State, and local regulations. Absorb on paper, evaporate on glass dish, then burn paper. Dxh 0009744o . r:' vil. RESPIRATORY PROTECTION (specify type) SPECIAL PROTECTION INFORMATION Air-supplied mask in confined areas Page 25 ` ` * . ; VENTILATION LOCAL EXHAUST MECHANICAL (general) May be needed yj SPECIAL OTHER -- -- PROTECTIVE GLOVES Rubber EYE PROTECTION Monogoggles OTHER PROTECTIVE EQUIPMENT Eye bath and safety shower m'Mm precautions precautionary labeling a/p/w-METHYLSTYRENE DANGER! CAUSES BURNS COMBUSTIBLE Do not get in eyes, on skin, on clothing. Keep away from heat and open flame. Avoid breathing vapor. Keep container closed. Use with adequate ventilation. Wash thoroughly after handling. FIRST AID: In case of contact, immediately flush eyes or skin with plenty of water for at least IS minutes while removing contaminated clothing and shoes. Call a physician. Wash clothing before reuse. FOR INDUSTRY USE ONLY OTHER HANDLING AND .STORAGE CONDITIONS Store under a nitrogen atmosphere; forms acetophenone, aldehydes, and peroxides if stored under air. Dangerous concentrations of peroxides are not expected to form in normal storage and handling, but storage under a nitrogen atmosphere is recommended. This chemical floats on water, is resistant to rapid biodegradation, and is highly toxic to aquatic life. Spills should not be flushed to sewers or waterways. The preferred method of disposal is to dilute with a non-reactive solvent or fuel stream and incinerate. Ground areas can be covered with sand or sawdust after most of the spilled material has been removed. Absorbing materials, after use on small spills, should be disposed of in an approved chemical landfill or by burning. CAUTION: Do not use clays, micas, or acidic materials which might catalyze polymerization, as absorbents. Personnel engaged in disposal work should avoid contact of wastes by wearing proper protective clothing. DTH 000097441