Document 9L4oLaqro8dnBoqkoBMJMy0n3

Bulletin G-62 RES Issue Date: August 1988 iFGoodrich ABOUT THIS BULLETIN T^data in this bulletin apply to all Geon vinyl resins. TTvse resins are white, thermoplastic, granular powvlec? manufactured by suspension, dispersion or mass polymerization processes. They are all 100% polyvinyl chloride homopolymer or copolymer. Although proper ties may vary in terms of molecular weight, particle size, porosity and other characteristics, safety and handling precautions are similar for each resin. Vinyl resin is normally used in combination with func tional additives such as stabilizer, lubricant, pigment, etc. When combined with these other ingredients, the resulting product is commonly called a vinyl "com pound." This bulletin does not apply to compound. For information applicable to compound, please read BFGoodrich Bulletin G-62 CMPD, "Material Safety Data. Geon Vinyl Compound." The data in this bulletin does not include any informa tion on the suitability of vinyl for any particular applica tion nor does it discuss any precautions that may apply to specific end products. Moreover, this bulletin cannot cover all possible situations which the user may expe rience during processing. Each aspect of your opera tion should be examined to determine if, or where, --^ additional precautions may be necessary. All health 4 and safety information contained in this bulletin should be provided to your employees or customers. We must rely on you to use this information to develop appropriate work practice guidelines and employee instructional programs for your operation. SPECIAL NOTE: Vinyl chloride and polyvinyl chloride (PVC) are not the same material. Vinyl chloride is a flam mable gas that is strictly regulated by DOT, EPA and OSHA. Through a chemical reaction, this gas - known as a monomer - is converted to a non-hazardous white granular powdercalled polyvinyl chloride resin, PVC,or simply, vinyl. Vinyl resin is not a cancer suspect agent. Moreover, the reaction is not reversible. That is, thermal processing or decomposition will not cause polyvinyl chloride to revert back to vinyl chloride monomer. (See Section II and Appendix 1.) 1 SECTION I Manufacturer's Name The BFGoodrich Company, Chemical Group Address 6100 Oak Tree Boulevard, Cleveland, OH 44131 Telephone Number (216) 447-6000 Trademark Geon Vinyl Chemical Name/Synonyms Poly(vinyl chloride), PVC, vinyl. Formula Homopolymer resin: (CH2CHCl),, Chemical Family Ethene, chloro-,homopolymer CAS Registry Number Homopoiymer resin: 9002-86-2 Transportation Emergency Telephone CHEMTREC: (800) 424-93G0 t\ r' JA f Virtually all Geon vinyl resins are polyvinyl chloride Geon vinyl resins are included in the Toxic Sub homopolymec We do manufacture a limited number stances Control Act, Inventory of Chemical Sub of copolymer dispersion resins. These are polymer stances, developed by the U.S. Environmental ized with another monomer, e.g., carboxylic acid, Protection Agency. vinyl acetate or a vinyl ester. Specific grades of Geon vinyl resin comply with applicable provisions of the U.S. Food and Drug Administration regulations governing food contact (21CFR). Please consult product literature for details. BFG38280 SECTION II HAZARDOUS INGREDIENTS Vinyl resin contains a very small amount of residual vinyl chloride monomer (CAS Registry Number: 75-014). Extensive product and process improvements have resulted in the reduction of residual monomer to average levels less than 1-5 parts per million (ppm) in most prime grades of Geon vinyl resins. Today, there is virtually no employee exposure to vinyl chloride mono mer above the OSHA action level of 0.5 ppm when han dling or processing Geon vinyl resin. Please read Appendix 1 for workplace exposure limits. Please read Appendix 2 - Hazardous Substances. SECTION III PHYSICAL DATA (Typical data, not specifications) Inherent Viscosity - 0.50 -1.16 Specific Gravity -1.40 Solubility in Water - Slight Particle Size, microns Dispersion resin: 0.2-15 Blending resin: 25-130 Suspension resin: 70-150 Appearance and Odor White, free-flowing powder. Practically odorless or bland odor. Other Characteristics such as vapor pressure, vapor density, boiling point and evaporation rate do not apply to solid materials such as vinyl resin. SECTION IV FIRE AND EXPLOSION HAZARD DATA Ignition Characteristics (ASTM D-1929) Vinyl resin has a flash-ignition temperature of about 391 C (735F) and a self-ignition temperature of about 454C(850F). Vinyl resin by itselfwill not support com bustion because it requires a higher concentration of oxygen for burning than is present in the earth's atmos phere. Vinyl resin can be forced to burn by continuous application of intense heat. Like all combustible mate rial, protect from open flame and maintain proper clear ance when using portable heat devices, etc. Store flammable liquids away from vinyl resin. Flash-Ignition Temperature: The lowest initial tem perature of air passing around the specimen at which sufficient combustible gas is evolved to be ignited by a small external pilot flame. Self-Ignition Temperature: The lowest initial tem perature of air passing around the specimen at which, in the absence of an ignition source, ignition occurs of itself, as indicated by an explosion, flame or sustained glow. Extinguishing Media Water is most effective. ABC dry chemical, AFFF, and protein type air foams are also effective. Geon vinyl resins are "ordinary combustibles" (NFPA defined Class A). Carbon dioxide is not generally recom mended for use on Class A fires as a lack of cooling capacity may result in reignition. Special Fire Fighting Procedure Wear positive pressure, Self-Contained Breathing Apparatus (SCBA). Personnel not having suitable respiratory protection must leave the area to prevent significant exposure to toxic combustion gases from any source. In enclosed orpoorlyventilated areas, wear SCBAduring cleanup immediately afterafire as well as during the attack phase of firefighting operations. Combustion Products When forced to bum, about 97% of the combustion gases from vinyl resin will be a combination of hydro gen chloride, carbon monoxide and carbon dioxide. Othergases will include small amounts of benzene and aromatic and aliphatic hydrocarbons. The combustion productsof vinyl resin, like those from other natural and synthetic materials, must be consid ered toxic. Like wood, paper and cotton, the major haz ard is carbon monoxide. Carbon monoxide is an asphyxiant while hydrogen chloride is an irritant. When vinyl is burned, it will have a detectable, pungent odor. Unusual Fire and Explosion Hazards Hydrogen chloride has a corrosive effect on many metals. Affected equipment surfaces and unpro tected structural elements of buildings should be washed to remove corrosive deposits as soon as possible after depositions have occurred. Vinyl resin is not considered to be a dust explosion risk. The potential hazard has been evaluated using the Hartmann Vertical Tube Apparatus. Data have also been reported by the National Fire Protection Association (N FPA). (1) In the Hartmann apparatus, vinyl resin represent ing fine particle size (2 Microns), medium particle size (75 Microns) and large particle size (130 Microns) does not ignite or explode in concentra tions up to 2.0 gm/liter. (2)The NFPA shows "fine" particle size vinyl resin to have a low order of risk.* Explosibility index: < < 0.1 (Weak) Ignition sensitivity: < < 0.1 (Weak) Explosion severity: < 0.1 (Weak) Ignition temp., dust cloud: 660C(1220F) "Source: NFPA 654-1975, "Prevention of Dust Explosions in the Plastics Industry." < <0.1 meansthat ignition of thedust cloud is not obtained by a spark or flame source. As a precaution, it is prudent to employ standard safety measures used in handling finely divided organic powders. BFG38281 SECTION V HEALTH HAZARD DATA Threshold Limit Value None established Effects of Overexposure There are no significant health hazards from vinyl resin at ambient temperature (see Dust Exposure). No adverse health effects are expected from proces sing vinyl resin when potential exposures are mini mized by good industrial hygiene practice and adequate ventilation. Nevertheless, at processing temperatures, the sum total of all ingredients in a vinyl-based compound (e.g., vinyl resin, stabilizer, lubricant, modifier, etc.) may emit fumes and vapors that are irritating to the respiratory tract, eyes or skin of some sensitive people. This depends upon proces sing technique and temperature, volume processed and, most importantly, the effectiveness of exhaust ventilation provided to the process area. Inhalation of decomposition or combustion prod ucts, especially hydrogen chloride, will cause irrita tion of the respiratory tract, eyes and skin. Depending on the severity of exposure, physiological response will be coughing, pain and inflammation. Individuals with bronchial asthma and other types of chronic obstructive respiratory diseases may develop bronchspasm if exposure is prolonged. SPECIAL NOTE Hydrogen chloride is detectable by its sharp, pungent odor in concentrations as low as 1-5 ppm. Low concentrations (below 50 ppm) are not harm ful in short-term exposures, but do provide excellent warning properties by causing coughing or irritation. Because the protective response is so strong, humans rarely submit to damaging concentrations - instead, there is an unmistakable urge to leave the area. Repeated or prolonged exposure to high concentra tions can cause eye and respiratory damage. In studies sponsored by the Federal Aviation Administration, no incapacitation, no impairment to escape and no signif icant post-exposure effects occurred in baboons exposed to hydrogen chloride up to 11,400 ppm (1.14%). OSHA has established a ceiling limit of 5 ppm for workplace exposure to hydrogen chloride. Emergency and First Aid Procedure If irritation persists from exposure to processing vapors or decomposition products, remove the affected individual from the area. Call a physician. Provide protection before allowing reentry. Toxicology Overview Geon vinyl resins have been evaluated by studies involving the intracutaneous (skin) and intramuscular injection in rabbits, by studies involving dietary administration (i.e., ingestion) to rats for nearly the life time of the animals, and by numerous human patch tests using panels of 50 or more people. No significant reactions, skin irritation, sensitization, or other deleterious effects have been observed in these studies. Dust Exposure Vinyl resin has little effect on the lungs and is not known to cause any disease when dust exposure is minimized. While there is no evidence of a substantial risk to health, a British study found a small decrease in breathing capacity for workers who smoked and were exposed to vinyl resin dust. This decrease was about one-seventh of that caused by normal aging and about equal to that expected with a one-pack-a-day cigarette smoker. There was no significantdecrease in breathing capacity from inhalation of vinyl resin dust by nonsmokers. The American Conference of Governmental Industrial Hygienists' Threshold Limit Value (1984) for nuisance dust is 10 mg/m3 for total dust and 5 mg/m3 for respira ble dust. Respirable dust are those particles in a size range below 10 microns. Typical particle size for sus pension and mass vinyl resin is 70-150 microns; blend ing resin is 25-130 microns. Dispersion resin has an average particle size below 5 microns. Routine inhalation of dust of any kind should be avoided. Exercise care when dumping bags, sweeping, mixing or doing other tasks which can create dust. Where large amounts of any dust may occur, wear a respirator approved by NIOSH/MSHA to protect against nuisance dust. SECTION VI REACTIVITY Stability - Stable Hazardous Polymerization - Will not occur Hazardous Decomposition Products Hydrogen chloride, carbon monoxide, carbon dioxide and smaH amounts of benzene and aromatic and aliphatic hydrocarbons. Incompatibility (materials to avoid) Avoid contact with acetal or acetal copolymers and with amine containing materials during processing. At processing conditions these materials are mutually destructive and involve rapid degradation. Thoroughly purge and mechanically clean processing equipment to avoid even trace quantities of these materials from coming in contact with each other. Prevent cross contamination of feedstocks. SECTION VII SPILL OR LEAK PROCEDURE Steps to be taken in case material is released orspilled Vacuum or sweep into a closed container for reuse or disposal. Waste Disposal Method Dispose of waste in a licensed landfill or by incinera tion in accordance with federal, state and local regula tions. For waste disposal purposes, Geon vinyl resins are not defined or designated as hazardous by current provisions of the Federal Resource Conservation and Recovery Act (RCRA - 40CFR261). If incinerated, be aware that hydrogen chloride is generated. SECTION VIII SPECIAL PROTECTION INFORMATION Ventilation Provide effective exhaust ventilation to draw dust and/ or fumes away from workers to prevent routine inhala tion. Compounding, hot melt processing (extruding, molding, etc.), cutting or sawing, machining, regrind ing, thermoforming, heat welding, and other proces sing or post-processing operations involving heat sufficient to result in polymer breakdown should be examined to ensure adequate ventilation. Ventilation guidelines and techniques may be found in the following publications: - NIOSH Recommended Industrial Ventilation Guidelines; GPO #017-033-00136-7. Available from theSuperintendentof Documents, U.S. Government Printing Office, Washington, DC 20402 ($9.00 as of December 1984). - Industrial Ventilation, 18th Edition. Available from the American Conference of Governmental Indus trial Hygienists, 6500 Glenway Ave., Bldg. D-5, Cincinnati, Ohio 45211 ($15.00 as of December 1984). Respiratory Protection Not normally required. Abnormal conditions such as equipment malfunction, use of improper equipment or procedures, or hangup or stagnation of vinyl-based compound during processing may cause decomposition. Employees involved in removing decomposing material should be provided with suitable air-supplied respirators, such as NIOSH/MSHA-approved positive pressure, self-contained breathing apparatus. Protective Equipment Not normally required. Wear protective gloves when handling hot material during processing. Safety glasses are recommended for all industrial work places. SECTION IX SPECIAL PRECAUTIONS (For vinyl resin and vinyl-based compound) (i^ Normal Melt Processing. Virtually all thermoplastic materials will emit fumes and/orvapors when heated to processing temperatures. The concentration and com position of these vapors will depend upon variables such as the specific compound formulation and proc essing method and temperature. Always use vinyl compound under well-ventilated conditions and avoid continued or prolonged breathing of process vapors. For personal hygiene, wash thoroughly after handling resin, especially before eating, smoking or using toilet facilities. Do not store or consume food in processing areas. Do not use processing equipment to heat food. Cleanup following normal melt processing should be performed under well-ventilated conditions. Com pound based upon vinyl resin may be held at process temperatures for a short time without significant ther mal degradation. However, it should be recognized that exposure to either elevated temperature or excessive heat history (time) will result in decomposition.* Equip ment should not be shut down for extended time periods with vinyl compound in it, or decomposition and possible corrosion of unprotected metal may result. If dies and screws are not to be cleaned manu ally, then compound should be purged from processing equipment prior to shutdown using special vinyl purge compound or a compatible thermoplastic such as general purpose ABS (do not use flame-retarded or halogen-containing grades for this purpose). 'Time and temperature required to initiate degradation will vary depending upon processing technique, degree of compound stabili zation and other factors. As a general rule-of-thumb, degradation begins to occurafter about one hour at 177C(350F), about ten min utes at 204C (400F) and within five minutes at 232C (450F). In case of power loss or other mishap, shut off the machine and dismantle the die assembly as soon as possible before degradation ordecomposition begins. If decomposition begins (with gassing and "popping" sounds) before the die can be disassembled, danger ously high pressure may occur in the die system. In this event, shut off the machine, clearthe area of personnel and wait until decomposition stops. Thoroughly venti late the area. Remove and disassemble the die system. These are guidelines only. Refer to technical service reports and equipment manufacturer's recommenda tions for specific procedures. Regrinding scrap normally generates substantial heat. Cool regrind before placing it in containers. The excel lent insulating quality of vinyl will prevent heat in the centerof a container from escaping, potentially result ing in slow thermal decomposition of the material. This may not only render the product unsatisfactory for further processing but also result in fumes and vapors being released into the workplace atmosphere. Removq vinyl resin from walkways and floors to prevent slippery footing. Sprinklered warehouse areas are recommended. Although vinyl resin by itself will not support combus tion, materials such as wooden pallets, cardboard boxes and other combustibles can provide sufficient fuel to cause vinyl to burn. Compounding vinyl resin. Many of the common com pounding ingredients which are mixed with vinyl resin may require special handling, especially respiratory protection. It is the user's responsibility to obtain and follow the recommended precautions of the individual additive supplier. SPECIAL NOTE Vinyl compound at or above normal processing temperature must never be allowed to accumulate in thickmasses, or itwill begin to thermally decompose and to swell due to internal gassing. Gas sing may cause a thick mass to explode if its outside surface is hardened. Molten waste should be collected as strands or flattened to 2-inches or less, and quenched in a drum of cold water provided for this pur pose. Decomposing material should be removed to a well-ventilated area, preferably outdoors. BFG38283 SECTION X TRANSPORTATION For domestic transportation purposes, vinyl resins are not classified as hazardous by the U.S. Department of Transportation under Title 49 of the Code of Federal Regulations, 1983 Edition. DOT Proper Shipping Name: Not applicable DOT Hazard Class: Not applicable DOT Label: Not applicable UN/NA Hazard No.: Not applicable SECTION XI HAZARD CODES Hazard Code Key 4 3 2 1 0 NFPA704' HEALTH HAZARD FLAMMABILITY HAZARD REACTIVITY HAZARD MAXIMUM PERSONAL PROTECTION 0 1 0 `Wear safety glasses. Wear gloves and/or dust respirator when needed. (1) National Fire Protection Association. (2) Hazardous Materials Identification System, National Paint and Coatings Association. DISCLAIMER OF LIABILITY As the conditions or methods of use are beyond our control, we do not assume any responsibility and expresslydisclaim any liability for any use of this mate rial. Information contained herein is believed to be true and accurate but all statements or suggestions are made without warranty, express or implied, regarding accuracy of the information, the hazards connected with the use of the material orthe results to be obtained from the use thereof. Compliance with all applicable federal, state and local laws and regulations remains the responsibility of the user. APPENDIX 1 VINYL CHLORIDE MONOMER (VCM) Employee exposure to vinyl chloride monomer (CAS Registry Number 75-01-4), a carcinogen, is regulated by OSHA (29CFR1910.1017). The current regulation requires that no employee may be exposed to VCM concentrations greater than 1.0 ppm (parts per million by volume) averaged over any eight-hour period or 5.0 ppm averaged over any period not exceeding 15 min utes. The action level is 0.5 ppm averaged over any eight-hour work day. The regulation applies to the manufacture, packaging, repackaging, storage, handling or use of vinyl chloride or polyvinyl chloride, but does not apply to the handling or use of fabricated products made of polyvinyl chloride. Typically, purchasers of vinyl resin to be com pounded or further processed must comply with the permissible exposure limits set by OSHA. Moreover, the regulation requires a program of initial monitoring in each facility to determine if there is any employee exposure in excess of the action level without the use of respirators. If monitoring does not find VCM above 0.5 ppm, no further action is necessary. Refer to OSHA regulations (including 29CFR1910.1017) for complete details. SPECIAL NOTE: Vinyl Chloride Warning Labels on Resin Containers Monitoring of vinyl processing and fabricating plants and modeling studies show that the action level (0.5 ppm) cannot be exceeded when residual VCM is at or belov/y 8.5 ppm in Geon vinyl resin. Shipping con tainers for these resins are not labeled by BFGoodrich unless a customer specifies otherwise. Vinyl prime, off-grade or scrap resin is labeled if residual monomer exceeds 8.5 ppm. The OSHA regulation requires that the label says "Polyvinyl chloride contains vinyl chloride. Vinyl chloride is a cancer suspect agent." Polyvinyl chloride resin is not acancer suspect agent. It is the trace amount of unreacted vinyl chloride mono mer that must be controlled, not the vinyl itself. Although some containers may be labeled, this does not necessarily mean that employee exposure to VCM will exceed permissible exposure limits. Using "worst case" conditions of thermal processing, our studies show that more than 30 ppm of unreacted monomer in vinyl resin is needed to cause 0.5 ppm to be present in the atmosphere of a hot, poorly ventilated workplace. For further information, please read BFGoodrich Technical Service Bulletin No. 12, "Vinyl Studies." Good ventilation in those areas where VCM might con centrate - such as where containers are stored and first opened, where materials are mixed and where resin is melted - will further ensure a work environ ment virtually free of VCM. BFG38284 APPENDIX 2 HAZARDOUS SUBSTANCES None of the following materials designated as toxic and hazardous by the U.S. Department of Labor (OSHA) are used to manufacture Geon vinyl resin nor are they anticipated by-products in our production process: 29CFR1910. 1001 Asbestos 1002 Coal tar pitch volatiles 1003 4-Nitrobiphenyl 1004 alpha-Naphthylamine 1006 Methyl chloromethyl ether 1007 3.3'-Dichlorobenzidine (and salts) 1008 bis-Chloromethyl ether 1009 beta-Naphthylamine 1010 Benzidine 1011 4-Aminodiphenyl 1012 Ethyleneimine 1013 beta-Propiolactone 1014 2-Acetylaminofluorene 1015 4-Dimethylaminoazobenzene 1016 N-Nitrosodimethylamine 1018 Inorganic arsenic 1029 Coke oven emissions 1043 Cotton dust 10441.2-Dibromo-3-chloropropane 1045 Acrylonitrile 1047 Ethylene oxide No lead, mercury, other heavy metals or heavy metal compounds and no polychlorinated biphenyls (PCB) or polybrominated biphenyls (PBB) are used to manufac ture Geon vinyl resins. These materials are ubiquitous and trace quantities may be found in the environment. BFG38285 Geon Vinyl Division 6100 Oak Tree Boulevard Cleveland, Ohio 44131 216-447-6000 1-800-GET-GEON (1-600-436-4366) Domestic Sales Offices GREAT LAKES MIDOLEBURG HTS, OH 44130 7550 Lucerne Drive, Suite 115 216-234-1330 1-800-GET-GEON (1-800-438-4366) NORTHEASTERN MIDDLEBURG HTS, OH 44130 7550 Lucerne Drive, Suite 115 216-234-1330 1-800-GET-GEON (1-800-438-4366) SOUTHEASTERN ATLANTA, GA 30339 2840 Mount Wilkenson Pkwy. Suite 170 404-434-7761 1-800-GET-GEON (1-800-438-4366) WESTERN CARSON, CA 90745 2104 East 223rd St. 213-513-7103 1-800-GET-GEON (1-800-438-4366) v, International Sales Offices The BFGoodrich Company Geon Vinyl Division International Sales 6100 Oak Tree Boulevard Cleveland, Ohio 44131 USA Cable Address: GOODRICHCHEM Telex: 980427 GOODCHEM IDPC Telex: 423313 BFGCLZINT WATERLOO, ONTARIO, CANADA BFGoodrich Canada 195 Columbia Street West N2J4N9 519-888-4300 HONG KONG BFGoodrich Chemical (Far East) Ltd. Suite 1406, AIA Building No. 1 Stubbs Road 5-743224 Telex: 780-83061 MELBOURNE, VICT. 3004, AUSTRALIA BFGoodrich Chemical Ltd. 14 Queens Road 267-6488 Telex: 790-31526 BFGOODRICH CHEMICAL -- EUROPE Bedrijfspark Keiberg, Paviljoen 113 Excelsiorlaan 27, Bus 3 1930 Zaventem Belgium 32(2)-7209840 Telex: 846-20693 s BFGoodrich BFG38286 The information contained herein is believed to be re liable. but no representations, guarantees or warranties of any kind are made as to its accuracy, suitability for particular applications or the results to be obtained therefrom. The in formation is based on laboratory work with small-scale equip ment and does not necessarily indicate end product per formance. Because of the variations in methods, con ditions and equipment used commercially in processing these materials, no warranties or guarantees are made as to the suitability of the products for the application dis closed. Full-scale testing and end product performance are the responsibility of the user. BFGoodrich shall not be liable for and the customer assumes all risk and liability of any use or handling of any material beyond BFGoodrich's direct control. The SELLER MAKES NO WARRANTIES, EXPRESS OR IMPLIED. INCLUDING, BUT NOT UMiTED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Nothing contained herein is to be considered as permission, rec ommendation, nor as an inducement to practice any pat ented invention without permission of the patent owner. Printed in U S A. August 1988 May 2, 1974 Regional and District^ales Managers Director and National Account Managers All Plastic Materials Salesmen Plastic Materials Product Engineers Subject: Material Safety Data Sheets for Geon Resins and Compounds We are sending to all our Geon Resin and compound customers who have previously requested and received our M. S.D.S. the attached appendix entitled "Interim Information - Vinyl Chloride Monomer." This appendix alerts the customer that he, as a plastics processor, is responsible for monitoring and maintaining ambient air quality in worker areas in his plants. This appendix will also be attached to future M.S.D.S. requests as well as those being currently processed. You may receive requests for additional information on this subject, in which case Walt Lodge's letter and attachments of April 11, 1974 should be referred to for acceptable responses. RJA/slg cc: E. B. Osborne W. S. Lodge P. J. Weaver J. F. Malone BFG38298 c/t tvi N Q ca y Vrf::- --'ifU ( B.P. Goodrich Chemical Company DIVISION Of f H e f GOODRICH COMPANY S1 * 11 !*fl 8 0 i) l E V A fl f> C i E V E l A N 0 OHIO 41131 . PHOIIE M6-5J10JO0 Appendix - A* OSHA - M. S. Di S. jjT-jr ; -M INFOR MATION - VINYL CHLORIDE MONOMER ij-^- Occuptional Safety and Health Administration (OSHA) annon.-'''-;eci on April 5, 1974, an Emergency Temporary Health Stands d *or exposure to Vinyl Chloride. (Federal Register, Vol. No* 67 April 5, 1974, pp. 12342-44) This emergency stand& established an exposure ceiling of 50 parts per million (ppm; ll air ^or Vinyl Chloride (VC). OSHA, in paragraph 1910. 93q of lie subject standard, has set down temporary in-plant monit.".'4requirements for ambient air for employee protection. *To h*~ attached to GEON^Resin and Compbund Material Safety .'-'ata Sheets. Date; .4-9-74 BPG3829g V\ o < Cj5