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                     MATERIAL SAFETY DATA SHEET



1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION



MATHESON TRI-GAS, INC.                                   EMERGENCY CONTACT:

959 ROUTE 46 EAST                                        CHEMTREC 1-800-424-9300

PARSIPPANY, NEW JERSEY 07054-0624                        INFORMATION CONTACT:

                                                         973-257-1100



SUBSTANCE: CHLORINE



TRADE NAMES/SYNONYMS:

MTG MSDS 22; CHLORINE MOLECULAR; DIATOMIC CHLORINE; DICHLORINE; MOLECULAR

CHLORINE; UN 1017; Cl2; MAT04600; RTECS FO2100000



CHEMICAL FAMILY: halogens, gas



CREATION DATE: Jan 24 1989

REVISION DATE: Mar 19 2003





2. COMPOSITION, INFORMATION ON INGREDIENTS



COMPONENT: CHLORINE

CAS NUMBER: 7782-50-5

PERCENTAGE: 100.0





3. HAZARDS IDENTIFICATION



NFPA RATINGS (SCALE 0-4): HEALTH=4 FIRE=0 REACTIVITY=0



EMERGENCY OVERVIEW:

COLOR: yellow or green

PHYSICAL FORM: gas

ODOR: distinct odor, irritating odor

MAJOR HEALTH HAZARDS: harmful if inhaled, respiratory tract burns, skin burns, eye burns

PHYSICAL HAZARDS: Containers may rupture or explode if exposed to heat. May ignite combustibles.



POTENTIAL HEALTH EFFECTS:

INHALATION:

SHORT TERM EXPOSURE: burns, chest pain, difficulty breathing, headache, dizziness, hyperactivity,

emotional disturbances, bluish skin color, lung damage, death

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LONG TERM EXPOSURE: burns, skin disorders, lack of sense of smell, lung damage

SKIN CONTACT:

SHORT TERM EXPOSURE: burns

LONG TERM EXPOSURE: burns

EYE CONTACT:

SHORT TERM EXPOSURE: burns

LONG TERM EXPOSURE: burns

INGESTION:

SHORT TERM EXPOSURE: ingestion of harmful amounts is unlikely

LONG TERM EXPOSURE: ingestion of harmful amounts is unlikely





4. FIRST AID MEASURES



INHALATION: If adverse effects occur, remove to uncontaminated area. Give artificial respiration if not

breathing. If breathing is difficult, oxygen should be administered by qualified personnel. Get immediate

medical attention.



SKIN CONTACT: Wash skin with soap and water for at least 15 minutes while removing contaminated

clothing and shoes. Get immediate medical attention. Thoroughly clean and dry contaminated clothing and

shoes before reuse. Destroy contaminated shoes.



EYE CONTACT: Immediately flush eyes with plenty of water for at least 15 minutes. Then get immediate

medical attention.



INGESTION: Contact local poison control center or physician immediately. Never make an unconscious

person vomit or drink fluids. Give large amounts of water or milk. Allow vomiting to occur. When vomiting

occurs, keep head lower than hips to help prevent aspiration. If person is unconscious, turn head to side. Get

medical attention immediately.



NOTE TO PHYSICIAN: For inhalation, consider oxygen. Avoid gastric lavage or emesis.





5. FIRE FIGHTING MEASURES



FIRE AND EXPLOSION HAZARDS: Negligible fire hazard. Oxidizer. May ignite or explode on contact

with combustible materials.



EXTINGUISHING MEDIA: water



Do not use dry chemicals, carbon dioxide or halogenated extinguishing agents. Large fires: Flood with fine

water spray.



FIRE FIGHTING: Move container from fire area if it can be done without risk. Cool containers with water

spray until well after the fire is out. Stay away from the ends of tanks. For fires in cargo or storage area: If

this is impossible then take the following precautions: Keep unnecessary people away, isolate hazard area

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and deny entry. Let the fire burn. For small fires, contain and let burn. Use extinguishing agents appropriate

for surrounding fire. Cool containers with water spray until well after the fire is out. Apply water from a

protected location or from a safe distance. Avoid inhalation of material or combustion by-products. Stay

upwind and keep out of low areas. Evacuation radius: 800 meters (1/2 mile).





6. ACCIDENTAL RELEASE MEASURES



AIR RELEASE:

Reduce vapors with water spray. Collect runoff for disposal as potential hazardous waste.



SOIL RELEASE:

Dig holding area such as lagoon, pond or pit for containment. Dike for later disposal. Trap spilled material at

bottom in deep water pockets, excavated holding areas or within sand bag barriers. Absorb with sand or other

non-combustible material. Add an alkaline material (lime, crushed limestone, sodium bicarbonate, or soda

ash).



WATER RELEASE:

Add an alkaline material (lime, crushed limestone, sodium bicarbonate, or soda ash). Absorb with activated

carbon. Collect spilled material using mechanical equipment.



OCCUPATIONAL RELEASE:

Stop leak if possible without personal risk. Avoid contact with combustible materials. Keep unnecessary

people away, isolate hazard area and deny entry. Ventilate closed spaces before entering. Notify Local

Emergency Planning Committee and State Emergency Response Commission for release greater than or

equal to RQ (U.S. SARA Section 304). If release occurs in the U.S. and is reportable under CERCLA

Section 103, notify the National Response Center at (800)424-8802 (USA) or (202)426-2675 (USA).





7. HANDLING AND STORAGE



STORAGE: Store and handle in accordance with all current regulations and standards. Protect from

physical damage. Keep separated from incompatible substances. Store outside or in a detached building.

Notify State Emergency Response Commission for storage or use at amounts greater than or equal to the

TPQ (U.S. EPA SARA Section 302). SARA Section 303 requires facilities storing a material with a TPQ to

participate in local emergency response planning (U.S. EPA 40 CFR 355.30).





8. EXPOSURE CONTROLS, PERSONAL PROTECTION



EXPOSURE LIMITS:

CHLORINE:

1 ppm (3 mg/m3) OSHA ceiling

0.5 ppm (1.5 mg/m3) OSHA TWA (vacated by 58 FR 35338, June 30, 1993)

1 ppm (3 mg/m3) OSHA STEL (vacated by 58 FR 35338, June 30, 1993)

0.5 ppm ACGIH TWA

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1 ppm ACGIH STEL

0.5 ppm (1.45 mg/m3) NIOSH recommended ceiling 15 minute(s)



VENTILATION: Provide local exhaust or process enclosure ventilation system. Ensure compliance with

applicable exposure limits.



EYE PROTECTION: Wear splash resistant safety goggles with a faceshield. Provide an emergency eye

wash fountain and quick drench shower in the immediate work area.



CLOTHING: Wear appropriate chemical resistant clothing.



GLOVES: Wear appropriate chemical resistant gloves.



RESPIRATOR: The following respirators and maximum use concentrations are drawn from NIOSH and/or

OSHA.

5 ppm

Any chemical cartridge respirator with cartridge(s) providing protection against this substance.

Any supplied-air respirator.

10 ppm

Any supplied-air respirator operated in a continuous-flow mode.

Any powered, air-purifying respirator with cartridge(s) providing protection against this substance.

Any chemical cartridge respirator with a full facepiece and cartridge(s) providing protection against this

substance.

Any air-purifying respirator with a full facepiece and a canister providing protection against this substance.

Any self-contained breathing apparatus with a full facepiece.

Any supplied-air respirator with a full facepiece.

Escape -

Any air-purifying respirator with a full facepiece and a canister providing protection against this substance.

Any appropriate escape-type, self-contained breathing apparatus.

For Unknown Concentrations or Immediately Dangerous to Life or Health -

Any supplied-air respirator with full facepiece and operated in a pressure-demand or other positive-pressure

mode in combination with a separate escape supply.

Any self-contained breathing apparatus with a full facepiece.





9. PHYSICAL AND CHEMICAL PROPERTIES



PHYSICAL STATE: gas

COLOR: yellow or green

ODOR: distinct odor, irritating odor

MOLECULAR WEIGHT: 70.906

MOLECULAR FORMULA: Cl2

BOILING POINT: -31 F (-35 C)

FREEZING POINT: -150 F (-101 C)

VAPOR PRESSURE: 5168 mmHg @ 21 C

VAPOR DENSITY (air=1): 2.49

SPECIFIC GRAVITY: Not applicable

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DENSITY: 3.214 g/L @ 0 C

WATER SOLUBILITY: 1.46% @ 0 C

PH: Not applicable

VOLATILITY: Not applicable

ODOR THRESHOLD: 0.01 ppm

EVAPORATION RATE: Not applicable

VISCOSITY: 0.01327 cP @ 20 C

COEFFICIENT OF WATER/OIL DISTRIBUTION: Not applicable

SOLVENT SOLUBILITY:

Soluble: alkali





10. STABILITY AND REACTIVITY



REACTIVITY: Stable at normal temperatures and pressure.



CONDITIONS TO AVOID: Avoid contact with combustible materials. Minimize contact with material.

Avoid inhalation of material or combustion by-products. Keep out of water supplies and sewers.



INCOMPATIBILITIES: combustible materials, bases, metals, halogens, metal salts, reducing agents,

amines, metal carbide, metal oxides, oxidizing materials, halo carbons, acids



HAZARDOUS DECOMPOSITION:

Thermal decomposition products: chlorine



POLYMERIZATION: Will not polymerize.





11. TOXICOLOGICAL INFORMATION



CHLORINE:

TOXICITY DATA:

293 ppm/1 hour(s) inhalation-rat LC50

CARCINOGEN STATUS: ACGIH: A4 -Not Classifiable as a Human Carcinogen

LOCAL EFFECTS:

Corrosive: inhalation, skin, eye

ACUTE TOXICITY LEVEL:

Toxic: inhalation

MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: heart problems

TUMORIGENIC DATA: Available.

MUTAGENIC DATA: Available.

REPRODUCTIVE EFFECTS DATA: Available.





12. ECOLOGICAL INFORMATION

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ECOTOXICITY DATA:

FISH TOXICITY: 390 ug/L 96 hour(s) LC50 (Mortality) Orangethroat darter (Etheostoma spectabile)



INVERTEBRATE TOXICITY: 637.5 ug/L 1 hour(s) LC50 (Mortality) Pacific oyster (Crassostrea gigas)



ALGAL TOXICITY: 50-1000 ug/L 23 hour(s) (Population) Algae,phytoplankton,algal mat (Algae)



PHYTOTOXICITY: 20 ug/L 96 day(s) (Growth) Water-milfoil (Myriophyllum spicatum)





13. DISPOSAL CONSIDERATIONS



Subject to disposal regulations: U.S. EPA 40 CFR 262. Hazardous Waste Number(s): D001. Dispose in

accordance with all applicable regulations.





14. TRANSPORT INFORMATION



U.S. DOT 49 CFR 172.101:

PROPER SHIPPING NAME: Chlorine

ID NUMBER: UN1017

HAZARD CLASS OR DIVISION: 2.3

LABELING REQUIREMENTS: 2.3; 8

QUANTITY LIMITATIONS:

PASSENGER AIRCRAFT OR RAILCAR: Forbidden

CARGO AIRCRAFT ONLY: Forbidden

ADDITIONAL SHIPPING DESCRIPTION: Toxic-Inhalation Hazard Zone B



CANADIAN TRANSPORTATION OF DANGEROUS GOODS:

SHIPPING NAME: Chlorine

UN NUMBER: UN1017

CLASS: 2.3; 8





15. REGULATORY INFORMATION



U.S. REGULATIONS:

CERCLA SECTIONS 102a/103 HAZARDOUS SUBSTANCES (40 CFR 302.4):

CHLORINE: 10 LBS RQ



SARA TITLE III SECTION 302 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355.30):

CHLORINE: 100 LBS TPQ



SARA TITLE III SECTION 304 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355.40):

CHLORINE: 10 LBS RQ

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SARA TITLE III SARA SECTIONS 311/312 HAZARDOUS CATEGORIES (40 CFR 370.21):

ACUTE: Yes

CHRONIC: No

FIRE: No

REACTIVE: No

SUDDEN RELEASE: Yes



SARA TITLE III SECTION 313 (40 CFR 372.65):

CHLORINE



OSHA PROCESS SAFETY (29CFR1910.119):

CHLORINE: 1500 LBS TQ



STATE REGULATIONS:

California Proposition 65: Not regulated.



CANADIAN REGULATIONS:

WHMIS CLASSIFICATION: ACD1E



NATIONAL INVENTORY STATUS:

U.S. INVENTORY (TSCA): Listed on inventory.



TSCA 12(b) EXPORT NOTIFICATION: Not listed.



CANADA INVENTORY (DSL/NDSL): Not determined.





16. OTHER INFORMATION



©Copyright 1984-2005 MDL Information Systems, Inc. All rights reserved.



MATHESON TRI-GAS, INC. MAKES NO EXPRESS OR IMPLIED WARRANTIES,

GUARANTEES OR REPRESENTATIONS REGARDING THE PRODUCT OR THE

INFORMATION HEREIN, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY

OF MERCHANTABILITY OR FITNESS FOR USE. MATHESON TRI-GAS, INC. SHALL NOT BE

LIABLE FOR ANY PERSONAL INJURY, PROPERTY OR OTHER DAMAGES OF ANY

NATURE, WHETHER COMPENSATORY, CONSEQUENTIAL, EXEMPLARY, OR

OTHERWISE, RESULTING FROM ANY PUBLICATION, USE OR RELIANCE UPON THE

INFORMATION HEREIN.