Document g2Z322LqY5LQXV8VLamrzXe4e

i To : W. C. Strader ETHYL CORPORATION INTER-OFFICE PLAINTIFF'S EXHIBIT ETCO-774 Address . gRp From: T. R. Robinson, M.D. Subject : I. H. Survey of MASC-Toluene Address : Baton Rouge Plant Date. 0ct. 13, 1975 The attached reports from J. D. Watts (4/22/75 and 10/8/75) concerning the methyl aluminum sesquichloride (MASC) blending with toluene are part of the comprehensive I. H. Survey. The MASCtoluene operation appears to be satisfactory from a health hazard standpoint (but note recommendations to use impervious gloves in unloading toluene). No further studies of this operation are planned at present. TRR:sp Attachments cc: t^S. A. D1Armond S. D. Notsinger cc: (without attachments) H. M. Taylor J. D. Watts ETH00003575 ETHYL CORPORATION INTER-OFFICE To H.M. Taylor Address BRT From Subject J.D. Watts MASC Toluene Blender Sampling Address BRT Date April 22 Method In documenting the potential exposures of employees in this work area to certain chemical contaminants, specific sites were selected for environmental type sampling. The airborne levels found were compared with the standards set by OSHA or the ACGIH. Description of Process MASC toluene is a chemical compound which serves as a catalyst in the production of tetra-methyl lead (TML). Methyl aluminum sesquichloride (MASC) is mixed with toluene at a blending operation located in the extreme north part of the plant to form a 11.6% blend. On the average, two tank cars of this compound (40,000 gallons) is brought up to the TEL area by rail every wekk. The blending operation is done only on the "A" shift and usually two to three times per week. Two TEL operators and two maintenance employees are potentially exposed. Since the MASC compound is pyrophoric in nature, personal protection such as aluminum-asbestos suits and hoods are afforded the maintenance men during the hook-up and disconnection of the MASC car. The toluene is metered into the designated blend car and weigh tanks are utilized in adding the MASC. Approximately 15,000 pounds of MASC and 105,000 pounds (15,000 gallons) of toluene are used in making the proper blend. The toluene tank cars are bottom unloaded and usually the valves on the connections are leaking. The blend car is top loaded. The operation begins at 6:30 a.m. and takes 5-6 hours to make the proper blend. A quality control sample is also collected in a small 2 ounce bottle. Employee Time in Area ETH00003576 The approximate .time allotment of either or both employees is as follows: Metering station MASC car Blender shack (tank car spot) 25-30% 10% 55% Results MASC Toluene Blender Date Chemical Component Concentration (ppm) Sample Time Location 2/5/75 Inorg Pb 0.002 mg/m^ cloudy, humid 60F, SW wind 2/6/75 cloudy-PC, 46F NW wind 3/27/75 clear, 64F SE wind Org Pb 0.002 mg/m3 propane < 0.08 CH3CI 0.08 VC1 < 0.06 CH3CH2C1 0.06 methylene chloride 18.6 propane CH3CI VC1 Toluene < 0.08 0.07 0.08 17.9 light HC propane CH3CI VC1 toluene 0.12 mg/m3 < 0.07 < 0.06 < 0.05 16.0 propane CH3CI CH3CH2CI Toluene 0.28 0.13 12.5 1.55 propane CH3CI VC1 CH3CH2CI Toluene 0.11 0.05 0.02 5.8 0.4 CH3CH2C1 Toluene 2.6 5.8 244 min. Blender shack area 242 min. 2nd floor blender shack 247 min. Tank car spot 287 min.' Tank car spot 57 min. Tank car spot 165 min. Blender shack 22 min. : Personal Samp! while disconnecting tai car and catching QC sample ETH00003577 Observations The field sampling results indicate that chemical components present are well within the proper standards, such as 100 ppm for toluene. Therefore, there exists no real health problem during this operational procedure. Both operators seem to be taking the proper precautions, such as wearing the proper protective equipment (goggles and gloves) when disconnecting the toluene car. However, I would recommend the use of impervious type (neoprene, or vinyl coated) gloves instead of the cloth gloves being used now due to possible toluene contact with the skin. I feel that this operation should be monitored again in the summer months to see if the toluene levels increase due to a more rapid volatilization. JDW:daw /f..Ii. 'h y- J. David Watts Industrial Hygienist ETH00003578 I TOLU E>CN COMPANY US A Form Ho. OSH A DIVISION OF EXXON CORPORATION U.S. DEPARIMEHT OF LABOR CS*l-3 Supersedes issue of 1/2 \ OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION ip* ** I- 'r SECTION I MANUFACTURER'S NAME EMERGENCY TELEPHONE NO.Q EXXON COMPANY, U.S.A. (A Division of Exxon Corporation) ADDRESS (Number, Street, City, State and ZIP Code) Day 221-3424;Night 668-7C 622--1^ P. 0. Box 2180 Houston, Texas 77001 CHEMICAL NAME AND SYNONYMS TRADE NAME AND SYNONYMS Aromatic Petroleum Solvent CHEMICAL FAMILY Petroleum Hydrocarbon &0E0EN3 FORMULA CH 78 SECTION II HAZARDOUS INGREDIENTS PAINTS, PRESERVATIVES, & SOLVENTS PIGMENTS CATALYST % TLV (Units) ALLOYS AND METALLIC COATINGS n.a. BASE METAL n.a. ALLOYS VEHICLE SOLVENTS ADDITIVES OTHERS n.a. 100 100 ppm n.a. METALLIC COATINGS FILLER METAL PLUS COATING OR CORE FLUX OTHERS HAZARDOUS MIXTURES OF OTHER LIQUIDS, SOLIDS, OR GASES % % TLV (Units! n.a. n.a. n.. a. n.a. TI.V (Units) SECTION til PHYSICAL DATA BOILING POINT (F) IBP - FBP 230-232 SPECIFIC GRAVITY (H20=1> VAPOR PRESSURE (mm Hg.) VAPOR DENSITY (AIR =1) Q 20C PERCENT VOLATILE 38 BY VOLUME (%) EVAPORATION RATE 4.5 (n-Butyl Acetate = 1) SOLUBILITY IN WATER Negligible APPEARANCE AND COLOR ___________________ Water-white color. Aromatic hydrocarbon odor. 0.872 100 1.5 - SECTION IV FIRE AND EXPLOSION HAZARD DATA PLASH POINT (Method used) Tag Closed Cup 45 F FLAMMABLE LIMITS EXTINGUISHING MEDIA Foam, dry chemical, CO^, water spray or fog. SPECIAL FIRS FIGHJING PROCEDURES Use air-supplied rescue equipment for enclosed areas. Lei 1 . TL * Cool exposed containers with water. UNUSUAL FIRE AND EXPLOSION HAZARDS Do not store or mix with stroniz oxidants. Flammable liquid n.n. t=> Tint- nrmUroKI trH00003579 Uol /JU 6/: E SECTION V HEALTH HAZAHD DATA Tl1R0S0?k*pOplDmI 1i\<SoTrVAbp-'Enour work, i.ng c, lay. . EFFECTS OF OVEREXPOSURE Inhalation of high vapor concentrations may have results ranging from mild depression to convulsions and loss of consciousness. EMERGENCY AND f!RST AID PROCEDURES If overcome by vapor, remove from exposure immediately; call a physician. If swallowed do not induce vomiting; call a physician. If breathing is irregular or "sToppe"dT start resuscitation, administer oxygen. Remove contaminated clothing and wash skin with soap and water. Flush eyes with water until irritation subsides. 7 STABILITY unstable SECTION VI REACTIVITY DATA CONDITIONS TO AVOID ,. ' . ,A STABLE X INCOMPATABILITY (Materials to avoid) Strong oxidants like liouid HAZARDOUS DECOMPOSITION PRODUCTS Carbon monoxide in the case chlorine and concentrated of incomplete combustion. oxvsen. HAZARDOUS POLYMERIZATION MAY OCCUR WILL NOT OCCUR CONDITIONS TO AVOID X ... -. C--._____-a T } '' SECTION .Vi) crj:-?* t on LEAK FROCEDUilHS . .... .i-'y-tn STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED i Remove all ignition sources. Keen people away. Recover free 1 Tam'd. Add absorbent to spill area. Avoid breathing vapors. Ventilate enclosed spaces. Open all windows and doors. Keep petroleum products out of streams and waterwavs. WASTE. DISPOSAL METHOD Incinerate absorbed material * - > V/_- /*.;`/.:r: qrfTjh^i t/m * 5 v a- ` \ .. RESPIRATORY PROTECTION (Specify type) Hydrocarbon vapor canister or supplied-air hose mask if needpd. VENTILATION LOCAL EXHAUST Face velocitv > 60 fpm special Use only with adequate* ventilation. MECHANICAL (General) OTHER Explosion-proof ventilation enninment__ No smoking or open lights. PROTECTIVE GLOVES Normally not needed. EYE PROTECTION Normally not needed. OTHER PROTECTIVE EQUIPMENT Hydrocarpon-insoluble apron if needed. \ 1 j [ 5 ? f F { j f'V \ Y'-r-z-r* A 5 ? .1 ' ETH00003580 PRECAUTIONS TO. BE TAKEN IN HANDLING AND STORING Keep containers closed. Keep away from heat, sparks and open flame. OTHER PRECAUTIONS Avoid prolonged or repeated contact with skin. JfosTs7skin with soap and water after contact . Remove contaminated c lothing. /Ailequ'ate mc6rysEquivalent to outdoors vent lktian- fames W. Hammond Director of Industrial Hygiene \ Wm. G. Dontask, Rh. D, , R. E. Government Regulations Advisor #i .14 A i ,! ETHYL CORPORATION INTER-OFFICE To T. R. Robinson, M.D. Address BRP From J. D. Watts Subject MASC Toluene Operation Address BRT/BRP Date October 8, 1975 Supplementary information on the chemical contaminants generated from the MASC toluene blending operation was obtained on September 18. Stationary and personal samples were collected in the subject area using activated charcoal and subsequent analysis by gas chromatography. The fixed station samples were collected at a sample rate of approxi mately 1.5 liters/min. and the personal samples were collected on 600 mg. SKC tubes at 75 cc/min. The operation was surveyed earlier this year (February-March) and it was recommended that it be resurveyed during the summer when the potential volatility of toluene would be at its greatest. MASC toluene is a chemical compound which is utilized as a catalyst in the production of TML. It is my understanding that the blending operation is now done only once a week on the day shift. The sampling results are shown in the attached table. Observations & Recommendations The inspection resurvey indicates that the hydrocarbon levels found are well within the OSHA standards on a time weighted basis. The stationary sample taken at the toluene metering station is indicative of the toluene concentration during the unloading and disconnection of the tank cars. The personal sample is indicative of the job function in and around the metering station. The personal result of 33 ppm toluene is also well within the OSHA standard of 100 ppm. The short termed personal sample collected while the operator caught the quality control (QC) sample showed a level of 118 ppm toluene. It is recommended that the operator continue to wear respira tory protection while collecting this sample to avert this excursion. Although personal protection, such as gloves,are worn by the employees, a neoprene or vinyl coated glove is recommended for this operation instead of cloth gloves in cases where potential skin contact with the aromatic solvent is likely (disconnecting tank car lines, quality control sample). From an environmental standpoint, there seems to be no problem with the contaminants present during the blend operation. ^A t JDW:sp (d. D. Watts ETH00003581 --------------------------- Industrial Hygienist cc: H. M. Taylor MASC Toluene Sampling Results Date: 9-18-75 Weather: Clear-PC/ 76, variable wind Chemical Component Benzene Butane Carbon tet Chloroform EDC Ethyl Cl Methyl Cl Methylene Cl Propane Toluene 1,1,1 Tri Tri VCM Vinylidene Cl Unknown Blender Shack 1 0.08 0.04 0.02 0.40 0.13 0.09 0.07 0.01 0.68 0.09 0.01 0.10 X Tank Car Spot Metering Station^ 0.15 0.04 0.30 0.25 0.13 0.09 0.04 25.3 0.16 0.05 0.07 0.01 X O Personal 0.04 0.25 0.14 0.10 0.22 32.65 0.08 0.09 X QC Sample^ 5.81 0.31 0.01 1.03 118.0 0.73 X Blender shack (2nd floor) approximately 75 yards north of toluene metering station 2 Toluene metering station area Personal sample of exposure in metering area and disconnection of tank car lines ^ Personal sample represents potential exposure while obtaining a QC blend sample ETH00003582