Document Ra1b8OQ9pMJ9LKvqvGQrOeDXV

MATERIAL SAFETY DATA SHEET An explanation ot the terms used herein may be found in OSHA 29 CFR 1910.1200, available from OSHA regional or area offices. (Similar to U.S. Department of Labor Form OMB No. 1218-0072 and ganarally accaptad In Canada tor Information purpoaaa) Do Not Duplicata Thli Form. Raquaat an Original. L-4559-E April 1987 ^.`PRODUCT IDENTIFICATION PRODUCT Acetylene CHEMICAL NAME FORMULA Acetylene CjHj SYNONYMS CHEMICAL FAMILY MOLECULAR WEIGHT Acetylen, Ethine, Ethyne, Narcylene Alkyne 26.038 TRADE NAME Acetylene (This product is intended for welding and cutting use.) .^1. HAZARDOUS INGREDIENTS This section covers the materials from which this product is manufactured. The fumes and gases produced dunng welding and cutting with the normal use of this product are covered by Section VI. The term "hazardous" should be interpreted as a term required and defined in OSHA 29 CFR 1910.1200 and does not necessarily imply the existence of any hazard. MATERIAL (CAS NO.) Acetylene (74-86-2) Vol (%) 100 1986-1987 ACGIH TLV-TWA (OSHA-PEL) Simple asphyxiant (None currently established) Acetylene cylinders are filled with.a porous material containing acetone into which the acetylene is dissolved. ACGIH has established a TLV-TWA of 750 ppm for acetone and a STEL of 1000 ppm. III. PHYSICAL DATA BOILING POINT, 760 mm. Hg Not Applicable SUBLIMATION POINT -84C(-119.2F)@ 760mm Hg SPECIFIC GRAVITY (H,0 * 1) Not Applicable VAPOR PRESSURE AT 21 C. VAPOR DENSITY (air = 1) PERCENT VOLATILES BY VOLUME 0.91 SOLUBILITY IN WATER, % by wt. 100 EVAPORATION RATE (Butyl Acetate = 1) APPEARANCE AND ODOR Colorless gas at normal temperature and pressure; garlic-like odor. 635 psig Slight Not Applicable EMERGENCY PHONE NUMBER IN CASE OF EMERGENCIES involving this material, further information is available at all times: In the USA 1-800-UCC-HELP (1-800-822-4357) In Canada 514-645-5311 For routine information contact your local supplier Union Carbide requests the users of this product to study this Material Safety Data Sheet (MSDS) and become aware of product hazards and safety information. To promote safe use of this product a user should (1) notify its employees, agents and contractors of the information on this MSDS and any product hazards and safety information, (2) furnish this same information to each of its customers for the product, and (3) request such customers to notify their employees and customers for the product of the same product hazards and safety information, UNION CARBIDE CORPORATION LINDE DIVISION UNION CARBIDE CANADA LIMITED C LINDE DIVISION Copyright S 1985. 1986. 1987 Union Carbide Corporation Page 1 of 4 00 A 061549 conftdfntial L-4559-E PRODUCT: Acetylene L-4559-E April 1987 *1V. HEALTH HAZARD DATA "HRESHOLD LIMIT VALUE: Acetylene - Simple asphyxiant ACGIH 1986-87; Acetone, 750ppm ACGIH 1986-87 FECTS OF SINGLE (ACUTE) OVEREXPOSURE SWALLOWING -- An unlikely route of exposure, but frostbite of the lips and mouth may result from contact with the liquid. If the liquid is swallowed, may cause nausea. SKIN ABSORPTION -- No evidence of adverse effects from available information. INHALATION -- Asphyxiant. Moderate concentrations of vapor may cause headache, drowsiness, dizziness, nausea, vomiting, excitation, excess salivation, and unconsciousness. SKIN CONTACT -- No harmful effects expected from vapor. Liquid may cause frostbite. EYE CONTACT -- Vapor may cause irritation. Liquid may cause irritation and frostbite. EFFECTS OF REPEATED (CHRONIC) OVEREXPOSURE: No evidence of adverse effects from available information. OTHER EFFECTS OF OVEREXPOSURE: None currently known. MEDICAL CONDITIONS AGGRAVATED BY OVEREXPOSURE: A knowledge of the available toxicology information and of the physical and chemical properties of the material suggest that overexposure is unlikely to aggravate existing medical conditions. EMERGENCY AND FIRST AID PROCEDURES: SWALLOWING -- If liquid is swallowed, do not induce vomiting. Call a physician. SKIN -- For exposure to liquid, flush with water and warm frostbite area with warm water (not to exceed 105 F). In case of massive exposure, remove clothing while showering with warm water. Call a physician. INHALATION -- Remove to fresh air. If breathing has stopped, give artificial respiration; if breathing is difficult, oxygen may be given; call a physician. EYES -- In case of splash contamination, immediately flush eyes thoroughly with water for at least .0 minutes. Seek the advice 'll a physician, preferably an ophthalmologist, urgently. )TES TO PHYSICIAN: Aspirated acetone may cause severe lung damage. Ifa large quantityof material has been swallowed, stomach contents should be evacuated quickly in a manner which avoids aspiration. Otherwise, treatment should be directed at the control of symptoms and the clinical condition. No specific antidote is known. WORKING WITH WELDING AND CUTTING MAY CREATE ADDITIONAL HEALTH HAZARDS. FUMES AND GASES can be dangerous to your health and may cause serious lung disease.* Keep your head out of the fumes. Do not breathe fumes and gases caused by the process. Use enough ventilation, local exhaust, or both to keep fumes and gases from your breathing zone and the general area. The type and amount of fumes and gases depend on the equipment and supplies used. Possibly dangerous materials may be found in fluxes, coatings, gases, metals etc. Get a Material Safety Data Sheet (MSDS) for every material used. Air samples can be used to find out what respiratory protection is needed. Short term overexposure to fumes may result in discomfort such as dizziness, nausea, or dryness or irritation of nose, throat, or eyes. NOTES TO PHYSICIAN: Acute --Gases, fumes, and dusts may cause irritation to the eyes, lungs, nose, and throat. Some toxic gases associated with welding and related processes may cause pulmonary edema, asphyxiation, and death. Acute overexposure may include signs and symptoms such as watery eyes, nose and throat irritation, headache, dizziness, difficulty breathing, frequent coughing, or chest pains. Chronic --Protracted inhalation of air contaminants may lead to their accumulation in the lungs, a condition which may be seen as dense areas on chest x-rays. The severity of change is proportional to the length of exposure. The changes seen are not necessarily associated with symptoms or signs of reduced lung function or disease. In addition, the changes on x-rays may be caused by non-work related factors such as smoking, etc. A detailed description of the Health Hazards and their consequences may be found in Linde's free publication "Precautions and Safe Practices for Electric Welding and Cutting," L52-529. You may obtain copies from your local supplier, or by writing to Union Carbide Corporation, Linde Division, Communications Department, 39 Old Ridgebury Road, Danbury, Connecticut, 06817-0001. MIXTURES: When two or more gases, or liquefied gases are mixed, their hazardous properties may combine to create additional, xpected hazards. Obtain and evaluate the safety information for each component before you produce the mixture. Consult an -ustrial Hygienist, or other trained person when you make your safety evaluation of the end product. Remember, gases and liquids jve properties which can cause serious injury or death. Page 2 of 4 DO A 061550 CONFrOENTTAl PRODUCT: Acetylene L-4559-E April 1987 1 1 " *V. FIREAND EXPLOSION HAZARD DATA FLASH POINT (test method) - 17.8C (0F) T.C.C. AUTOIGNITION TEMPERATURE FLAMMABLE LIMITS LOWER IN AIR, % by volume 2.3% UPPER EXTINGUISHING MEDIA See paragraphs below. 299C (571 F) 100% SPECIAL FIRE FIGHTING PROCEDURES Refer to CGA pamphlet SB-4, "Handling Acetylene Cylinders in Fire Situations." Evacuate all personnel from danger area. Immediately cool containers with water spray from maximum distance taking care not to extinguish flames. Remove ignition sources if without risk. If flames are accidentally extinguished, explosive re-ignition may occur. Use self-contained breathing apparatus. Stop flow of gas if without risk while contining cooling water spray. Remove all containers from area of fire if without risk. Allow fire to burn out. On-site fire brigades must comply with OSHA 29 CFR 1910.156. UNUSUAL FIRE AND EXPLOSION HAZARDS Extremely flammable gas. Forms explosive mixtures with air and oxidizing agents. Container may rupture due to heat of fire. Do not extinguish flames due to possibility of explosive re-ignition. Flammable vapors may spread from leak. Explosive atmospheres may linger. Before entering area, especially confined areas, check atmosphere with approved explosion meter. No part of a container should be subjected to a temperature higher than 52C (approximately 125:F). All containers are provided with a pressure relief device designed to vent contents when they are exposed to elevated temperature. Contact with copper, silver, or mercury or their alloys or halogens can cause explosion and be ignited by pilot lights, other flames, smoking, sparks, heaters, electrical equipment, static discharge or other ignition sources at locations distant from product handling point. C VI. REACTIVITY DATA S!*?lLlTY UNSTABLE STABLE X CONDITIONS TO AVOID Stable as shipped. Avoid use at pressures above IS psig. INCOMPATIBILITY (materials to avoid) Copper, silver, mercury or their alloys, oxidizing agents, acids, halogens, moisture. HAZARDOUS DECOMPOSITION PRODUCTS Thermal decomposition or burning may produce C0/C02H2. The welding and cutting process may form reaction products such as carbon monoxide and carbon dioxide. Other decomposition products of normal operation originate from the volatilization, reaction or oxidation of the material being worked. HAZARDOUS POLYMERIZATION May Occur Will not Occur CONDITIONS TO AVOID Elevated temperature and pressure and/or the presence of a catalyst. X VII. SPILLOR LEAK PROCEDURES . STEPS TO BE TAKEN IF MATERIAL IS RELEASED OR SPILLED Forms explosive mixtures with air (See Section V). Immediately evacuate all personnel from danger area. Use self-contained breathing apparatus where needed. Remove all sources of ignition if without risk. Reduce vapors with fog or fine water spray. Shut off leak if without risk. Ventilate area of leak or move leaking container to well-ventilated area. Flammable gas may spread from leak. Before entering area, especially confined areas, check atmosphere with appropriate device. WASTE DISPOSAL METHOD: Prevent waste from contaminating surrounding environment. Keep personnel away. Discard any product, residue, disposable container or liner in an environmentally acceptable manner, in full compliance with Federal, State and local regulations. 00 A 061551 CONFIDENTIAL Page 3 of 4 PRODUCT: Acetylene L-4559-E April 1987 *VIII. SPECIAL PROTECTION INFORMATION "SPIRATORY PROTECTION (specify type) -- Use respirable fume respirator or air supplied respirator when working in ifined space or where local exhaust or ventilation does not keep exposure below TLV. Select as per OSHA29 CFR1910.134. VENTILATION LOCAL EXHAUST -- Use enough ventilation, local exhaust or both, to keep the fumes and gases below TLV's in the worker's breathing zone and the general area. Train the worker to keep his head out of the fumes. MECHANICAL (general) ALWAYS WORK WITH ENOUGH VENTILATION SPECIAL Not applicable OTHER Depends on specific use conditions, and location. Use adequate ventilation or personal respiratory protection. See Section IX and OSHA29 CFR1910.252. PROTECTIVE GLOVES Welding gloves recommended EYE PROTECTION -- Wear goggles with filter lens selected as per ANSI Z49.1. Provide protective screens and goggles, if necessary, to protect others. Select as per OSHA29 CFR1910.133. OTHER PROTECTIVE EQUIPMENT -- As needed, wear hand, head, and body protection which help to prevent injury from radiation and sparks. See ANSI Z49.1. At a minimum this includes welder's gloves and protective goggles, and may include arm protectors, aprons, hats, shoulder protection, as well as substantial clothing. Train the worker not to touch live electrical parts. NX. SPECIAL PRECAUTIONS Fumes and gases cannot be classified simply. The composition and quantity of both are dependent upon the metal being worked, the process, procedure and electrodes used. Oth?' conditions which also influence the composition and quantity of the fumes and gases to which workers may be exposed incluoe. '-'jtings on the metal being worked (such as paint, plating, or galvanizing), the ~ umber of workers and the volume of the work area, the quality and amount of ventilation, the position of the worker's head with pect to the fume plume, as well as the presence of contaminants in the atmosphere (such as chlorinated hydrocarbon vapors from aning and degreasing activities). One recommended way to determine the composition and quantity of fumes and gases to which workers are exposed is to take an air sample from inside the worker's helmet if worn or in the worker's breathing zone. See ANSI/AWS FI .1, available from the American Welding Society, 550 N.W. Le Jeune Rd,, Miami, FL 33126. Read and understand the manufacturer's instructions and the precautionary label on the product. See American National Standard 249.1, "Safety In Welding And Cutting" published by the American Welding Society and OSHA Publication 2206 (29CFR1910), U.S. Government Printing Office, Washington, D.C. 20402 for more details. For further safety and health information refer to Linde's free safety booklet L-2035. OTHER HANDLING AND STORAGE CONDITIONS Heat and sparks during use could be the source of ignition of combustible materials. Prevent fires. Refer to NFPA 51B "Cutting and Welding Processes" and NFPA 50 "Oxygen-Fuel Gas Systems." Use piping and equipment adequately designed to withstand pressures to be encountered. Gas can cause rapid suffocation due to oxygen deficiency. Store and use with adequate ventilation. Close valve when not in use and when empty. Never work on a pressurized system. Do not strike arc on cylinder. The defect produced by an arc burn could lead to cylinder rupture. Do not ground cylinder. Store in cool, dry, well ventilated area. Do not store near open flames. Electrical equipment should be explosion proof. Do not store with oxygen or other oxidizers. Protect cylinders from physical damage. Store cylinders in upright position secured to prevent falling over. Refer to CGA Pamphlets P-1 and G-1 for recommendations. The opinions expressed herein are those of qualified experts within Union Carbide. We believe that the information contained herein is current as of the date of this Material Safety Data Sheet. Since the use of this information and these opinions and the conditions of use of the product are not within the control of Union Carbide, it is the user's obligation to determine the conditions of safe use of the product. WMLINDE i UNION CARBIDE L-4559-E 87-0928 4/87 30M GENERAL OFFICES IN THE USA: Union Carbide Corporation Linde Division 39 Old Ridgebury Road Danbury, CT 06817-0001 IN CANADA: Union Carbide Canada Limited Linde Division 123 Eglinton Avenue East Toronto, Ontario M4P IJ3 Other offices in principal cities all over the world. Lithographed in U.S.A. Page 4 of 4 on A 06155? CONF TDONTTni