Document JNL0y12N65nb0NaQj7xz7wnw2

CD TDn ur~,vLi, ____^ industries / To: D. Dupre - Lake Charles J. Anderson - Lake Charles J. W. Moore - Corpus Christi INTEsi-amCE CORRESPONDENCE Date; From: Location; Subject: December 31, 1968 Commercial Development G.O. - 20 South Vinylidene Chloride In the event you do not have one on file, you may find the attached technical bulletin on vinylidene chloride by Ethyl Corporation to be of some interest. JFD/pjh Attachment cc* E. D. Witman \ SL OAA610 . I'Ati'W : ETHYL CORPORATION lOO Park Avenue, Nov/ York, N.Y. 1GO i ____ VINYLIDENE CHLORIDE CHEMICAL NAMES Vinylidene Chloride 1,1-Dichloroethylene uns -Dichloroethylene FORMULA ch2cci2 r, / H Cl N^c'' H/ \ci APPLICATION ' ^Manufacture of Polymers PROPERTIES OF PURE VINYLIDENE CHLORIDE Physical State ,,...................................................... . Odor......................... '.....................Sweet, Molecular Weight ........................................................... Boiling Point at 760 mm Hg, C . , , ... Freezing Point, C .V.,................................ Density at 20C ; g/ml.............................. * . . '..........................*. , . lb/gal................................... . .............................. . Flash Point (open cup), C'. .................................. Explosive Limits (vol % in air at 25C) . . . Index of Refraction, n2^.......................... . Clear liquid pleasant 96.95 31.7 -122.5 1.2132 10. 12 -10 7-16 1.4271 Vapor Pressure, mm Hg at 0C . . . . . . . .... . . 25C.............................. .... -............................. /- Absolute Viscosity, cp at 0C........................... . ............................. . 20C . .......................................................... . 50C .................................................................... '215.9 599.0 0.422 0.358 0.292 The information presented herein is believed to be accurate and reliable, but is presented without guarantee or responsi bility on the part of Ethyl Corporation. Further, nothing contained herein shell be taken as an Inducement or recommenda tion to manufacture or use any of the herein described 'materlala or processes In. violation of axitting-or futura patents. Form No. IC-558 (R/l/65) SL 044611 IC-B01 Printed V TYPICAL ANALYSIS OF ETHYL'S VINYLIDENE CHLORIDE The outstanding quality of Ethyl's product is shown in the following typical analysis: % Vinylidene Chloride (excluding inhibitor). , . Specific Gravity, 25C/25C....................................... Cottrell Boiling Range 50% Boiling Point, C . . ..................... Mid-S0% Boiling Range, C................................... Water, ppm......................................................................... Chloroacetylene (as C^H-), ppm ....... Other Chlorinated Hydrocarbons, ppm .... Inhibitor. . ......................................................................... 99.9 min 1.2022-1.2122 31.7-32.2 0.5 max 100 max 1 max 500 max As required HANDLING Vinylidene Chloride is an extremely flammable liquid. In addition to the risk of fire or explosion, it is irritating to the skin and eves and may cause burns. Work areas where vinylidene~ChlO'frde is handled or stored should be well ventilated in order to keep the concentration below the safe lower explosive limit at, all times. Over-exposure can lead to anesthesia. It is recommended that concentrations of vinylidene chloride in air be ~ * monitored and maintained at levels below 100 ppm, * VjjLylidane^ghloride v,apors burn strongly but not violently. Re com- . mended fire extinguishers are foam, carbon dioxide, and dry chemicals, using a water spray for cooling as required. Employees working in areas where vinylidene. chloride is handled or stored should be thoroughly familiar with the hazards associated with its use. Emphasis in training should be placed on the use of personal pro tective equipment, fire-fighting equipment, location of Bafety equipment, and first-aid measures. SHIPPING ./ Vinylidene chloride, inhibited as required, is shipped in the follow ing containers: Container ICC Specification Pounds, Net (approximate) Tank Cars 05 A 100-W) 105,000 Tank Trailers 05 A 200L_W MC-330^ 105,000 25,000 55-gal drums (non-returnable) 17C 500 5-gal drums (non-returnable) 170- 45 SL 6^612 All shipments arc made in accordance with ICC regulations. The vapor space in all containers is filled witn nitrogen. Each container bears the ICC red label for FLAMMABLE liquids, and the following warning.label: DANGER1 . EXTREMELY FLAMMABLE LIQUID. . MAY CAUSE BURNS. Keep container closed and away from heat, sparks, and open flame. Use with adequate ventilation. Avoid prolonged breathing of vapor. Avoid contact with skin, eyes, and clothing. In case of contact, immediately remove ' all contaminated clothing and flush skin and eyes with plenty of water; for eyes, get medical attention. UNLOADING TANK CARS ' Applicable instructions for unloading tank cars containing flammable liquids are set forth in Manufacturing Chemists' Association Manual Sheet TC-4. Also see ICC Regulations, Sec. 74,560 to 74.563 inclusive, for un loading tank cars. Under no circumstances should air be permitted to enter vinylidene chloride tank cars, for this, can lead to the formation of hazardous peroxides. Accordingly, 5-10 pounds positive nitrogerTpressure should always"beTCeft If tank cars are found to be leaking, or to have defective valves, immediately notify Ethyl Corporation, 100 Park Avenue, New York, N. Y., 10017 (Phone area code 212, ORegon 9-2000). STORAGE Vinylidene chloride must be stored away from light or air. It is recommended that positive nitrogen pressure be maintained in the vapor spac Storage areas should be selected in accordance with local codes or authorities having jurisdiction. Assistance is available from such organizations as National Board of Fire Underwriters and Factory Insurance Association. Tanks, valves, pipes and fittings coming into contact with vinylidene chloride liquid or vapor should be constructed of jsteel^or nickel. Copper arrdTrdppef cdntainingalloys, such as brass and monei, should not be used because of the possible presence of acetylenic compounds, -- SL 044613 4- Storagc tanks should be constructed according to ASME Code, Section VIII, for at least 30 psi maximum design working pressure and full vacuum. Frangible safety discs are recommended instead of relief valves, for corrosion and polymer may render relief valves ineffective, * All liquid inlet lines should enter or extend to the bottom of the vessel. This guards against the accumulation of static electricity. All equipment should be properly grounded. Adequate, diking should be provided under the tank area to confine liquid in case of tank rupture. HAZARDOUS PEROXIDES When vinylidene chloride is stored in the presence of air or oxygen, a peroxide compound of undetermined structure is formed. Even when an in hibitor is present, oxygen exposure should be avoided, for the inhibitor may be used up and the peroxide compound can still form. Formation of these peroxides is often accompanied by the precipitation of p. flocculenT vinyIid~ene~~cnioride' polymer^The^peroxide can-be^exglosive, and since it is absorbed on the precipjtatedjpolymer, this polymer must be regarded ns explosive when separated ~by filtration^ evaporation or drying. If dry and containing mo~re~tKan"aout 15c/o of the peroxide, this material can detonate from a slight mechanical shock or from heat. Polyvinylidene chloride, free of peroxides, is not explosive. Probable exposure to oxygen, and consequently the possible presence of peroxides, is indicated in two ways: (1) Peroxides decompose to form phosgene, hydrochloric acid and formaldehyde, all of which give off a sharp odor even at low concentrations; (2) the appearance of polymer is another indication of possible oxygen exposure. v , i. Confirmation of the presence of peroxide can be determined by the liberation of iodine from a slightly acidified dilute potassium iodide solution. Upon evaporation of vinylidene chloride, residues may remain. These residues, as sometimes found in pipes, lines, laboratory equipment and storage vessels, should be handled with caution for they may contain peroxides. The residues j:an be rendered inactive by immediately flushing them with water. It is recommended that large scale equipment, used on an intermittent basls^ be filled with water when not in use. t * SPILLS AND LEAKS . > Spills and leaks should be attended to immediately. Ignition sources should be eliminated from the area. It is recommended that spilled vinylidene chloride be covered with an absorbing medium, such as sand. After the ab sorbent has soaked up the vinylidene chloride, it can be removed to a safe area. SL 044614 5- Thc volatility of vinylidono chloride is great onough to allow con centrations exceeding 2% to bo present in the air in the immediate area of a spill. Consequently* gas masks or air masks should be woyn. SERVICE - Ethyl Corporation maintains a technical staff as a service to assure vinylidene chloride customers of a reliable supply of high quality product. Requests for samples* further information* or the assistance of a technical representative are welcomed, ' . ` ' Ethyl Corporation Industrial Chemicals Division 100 Park.Avenue * New York, N. Y. 10017 * /, i >:rf /'. SL 04461-5-