Tel: 514-956-7503

                                                                       Fax: 514-956-7504

                                                                     Internet: www.megs.ca

                                                                    Email : support@megs.ca





Montreal               St-Laurent              Tel : 514-956-7503      Fax : 514-956-7504

Ottawa                 Nepean                  Tel : 613-226-4228      Fax : 613-226-4229

Quebec                 Quebec                  Tel : 418-834-7447      Fax : 418-834-3774

               STYRENE- MATERIAL SAFETY DATA SHEET







TABLE OF CONTENTS:

                                                        24 Hour EMERGENCY

1.  Chemical Product and Company Identification

                                                        CONTACT

2.  Composition, Information on Ingredients

3.  Hazards Identification

4.  First Aid Measures

                                                        U.S- CHEMTREC 1-800-

5.  Fire Fighting Measures

                                                        424-9300

6.  Accidental Release Measures

7.  Handling and Storage

8.  Exposure Controls, Personal Protection              CANADA- CANUTEC 613-

9.  Physical and Chemical Properties

                                                        996-6666

10. Stability and Reactivity

11. Toxicological Information

12. Ecological Information

13. Disposal Considerations

14. Transport Information

15. Regulatory Information

16. Other Information









1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION-----------Up to Table

of Contents



Matheson Tri-Gas, Inc.



The telephone numbers listed below are

emergency numbers, please contact your local

branch for routine inquiries.



           USA                  CANADA

    959 Route 46 East        530 Watson Street

  Parsippany, New Jersey       Whitby, Ontario

     07054-0624 USA           L1N 5R9 Canada

   Phone: 973-257-1100      Phone: 905-668-3570



SUBSTANCE: STYRENE

SYMBOL: C6H6



TRADE NAMES/SYNONYMS:

PHENYLETHYLENE; VINYLBENZENE; CINNAMENE; PHENYLETHENE; ETHENYLBENZENE;

BENZENE, ETHENYL-; STYRENE; STYROL; STYROLENE; STYRENE MONOMER; STCC

4907265; UN 2055; O-4507; MAT22100; RTECS WL3675000



CHEMICAL FAMILY: hydrocarbons, aromatic



CREATION DATE: Jan 24 1989

REVISION DATE: Mar 16 1999





2. COMPOSITION, INFORMATION ON INGREDIENTS-----------Up to Table of

Contents



COMPONENT: STYRENE MONOMER, INHIBITED



CAS NUMBER: 100-42-5



EC NUMBER (EINECS): 202-851-5



PERCENTAGE: >99





COMPONENT: (1,1-DIMETHYLETHYL)-1,2-BENZENEDIOL



CAS NUMBER: 27213-78-1



EC NUMBER (EINECS): 248-325-9



PERCENTAGE: <0.1





3. HAZARDS IDENTIFICATION-----------Up to Table of Contents



NFPA RATINGS (SCALE 0-4): HEALTH=2 FIRE=3 REACTIVITY=2



WHMIS CLASSIFICATION: BD2



EC CLASSIFICATION (ASSIGNED):

Flammable

Xn Harmful

Xi Irritant



R 10-20-36/38



EC Classification may be inconsistent with independently-researched data.

EMERGENCY OVERVIEW:



Color: colorless to yellow



Physical Form: liquid









Odor: sweet odor, distinct odor, pungent odor



Major Health Hazards: respiratory tract irritation, skin irritation, eye irritation, central nervous

system depression, suspect cancer hazard (in animals)



Physical Hazards: Flammable liquid and vapor. Vapor may cause flash fire. May polymerize.

Containers may rupture or explode.



POTENTIAL HEALTH EFFECTS:



INHALATION:

   Short Term Exposure: irritation, metallic taste, ringing in the ears, nausea, vomiting,

headache, drowsiness, symptoms of      drunkenness, hearing loss, liver damage, coma

   Long Term Exposure: menstrual disorders, lung congestion, kidney damage, liver damage,

brain damage



SKIN CONTACT:

  Short Term Exposure: irritation, symptoms of drunkenness

  Long Term Exposure: same as effects reported in short term exposure



EYE CONTACT:

  Short Term Exposure: irritation, tearing, eye damage

  Long Term Exposure: same as effects reported in short term exposure



INGESTION:

   Short Term Exposure: same as effects reported in other routes of exposure, symptoms of

drunkenness

   Long Term Exposure: irregular heartbeat, kidney damage, liver damage, cancer



CARCINOGEN STATUS:

OSHA: N

NTP: N

IARC: Y





4. FIRST AID MEASURES-----------Up to Table of Contents



INHALATION:

Remove from exposure immediately. Use a bag valve mask or similar device to perform artificial

respiration (rescue breathing) if needed. Get medical attention.

SKIN CONTACT:

Remove contaminated clothing, jewelry, and shoes immediately. Wash with soap or mild

detergent and large amounts of water until no evidence of chemical remains (at least 15-20

minutes). Get medical attention, if needed.



EYE CONTACT:

Wash eyes immediately with large amounts of water or normal saline, occasionally lifting upper

and lower lids, until no evidence of chemical remains. Get medical attention immediately.



INGESTION:

If vomiting occurs, keep head lower than hips to help prevent aspiration. Get medical attention, if

needed.





5. FIRE FIGHTING MEASURES-----------Up to Table of Contents



FIRE AND EXPLOSION HAZARDS:

Severe fire hazard. The vapor is heavier than air. Vapors or gases may ignite at distant ignition

sources and flash back. Vapor/air mixtures are explosive above flash point.



EXTINGUISHING MEDIA:

regular dry chemical, carbon dioxide, water, regular foam



Large fires: Use regular foam or 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: Cool

containers with water from unmanned hose holder or monitor nozzles until well after fire is out. If

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

hazard area and deny entry. Let the fire burn. Withdraw immediately in case of rising sound from

venting safety device or any discoloration of tanks due to fire. For tank, rail car or tank truck:

Evacuation radius: 800 meters (1/2 mile). Do not attempt to extinguish fire unless flow of material

can be stopped first. Flood with fine water spray. Do not scatter spilled material with high-

pressure water streams. 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. Water may be ineffective.



FLASH POINT:

88 F (31 C) (CC)



LOWER FLAMMABLE LIMIT:

1.1%



UPPER FLAMMABLE LIMIT:

6.1%



AUTOIGNITION:

914 F (490 C)



FLAMMABILITY CLASS (OSHA):

IC





6. ACCIDENTAL RELEASE MEASURES-----------Up to Table of Contents

AIR RELEASE:

Reduce vapors with water spray. Stay upwind and keep out of low areas.



SOIL RELEASE:

Trap spilled material at bottom in deep water pockets, excavated holding areas or within sand

bag barriers. Dike for later disposal. Absorb with sand or other non-combustible material. Collect

with absorbent into suitable container.



WATER RELEASE:

Absorb with activated carbon. Collect spilled material using mechanical equipment. Cover with

absorbent sheets, spill-control pads or pillows. Apply detergents, soaps, alcohols or another

surface active agent. Remove trapped material with suction hoses.



OCCUPATIONAL RELEASE:

Avoid heat, flames, sparks and other sources of ignition. Stop leak if possible without personal

risk. Reduce vapors with water spray. Small spills: Absorb with sand or other non-combustible

material. Collect spilled material in appropriate container for disposal. Large spills: Dike for later

disposal. Remove sources of ignition. Keep unnecessary people away, isolate hazard area and

deny entry. Reportable Quantity (RQ): 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-----------Up to Table of Contents



Store and handle in accordance with all current regulations and standards. Subject to storage

regulations: U.S. OSHA 29 CFR 1910.106. Grounding and bonding required. Protect from

physical damage. Store outside or in a detached building. Store with flammable liquids. Monitor

inhibitor content. Keep separated from incompatible substances. Keep separated from

incompatible substances.





8. EXPOSURE CONTROLS, PERSONAL PROTECTION-----------Up to Table of

Contents



EXPOSURE LIMITS:



STYRENE MONOMER, INHIBITED:

STYRENE:

100 ppm OSHA TWA

200 ppm OSHA ceiling

600 ppm OSHA peak 5 minute(s)/3 hour(s)

50 ppm (213 mg/m3) OSHA TWA (vacated by 58 FR 35338, June 30, 1993)

100 ppm (426 mg/m3) OSHA STEL (vacated by 58 FR 35338, June 30, 1993)

20 ppm (85 mg/m3) ACGIH TWA (skin)

40 ppm (170 mg/m3) ACGIH STEL

50 ppm (213 mg/m3) NIOSH recommended TWA

100 ppm (426 mg/m3) NIOSH recommended STEL



VENTILATION: Provide local exhaust ventilation system. Ventilation equipment should be

explosion-resistant if explosive concentrations of material are present. Ensure compliance with

applicable exposure limits.

EYE PROTECTION: Wear splash resistant safety goggles. 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.

500 ppm

Any chemical cartridge respirator with organic vapor cartridge(s).

Any supplied-air respirator.

700 ppm

Any supplied-air respirator.

Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s).

Any air-purifying respirator with a full facepiece and an organic vapor canister.

Any powered, air-purifying respirator with organic vapor cartridge(s).

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 an organic vapor canister.

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-----------Up to Table of Contents



PHYSICAL STATE: liquid



COLOR: colorless to yellow



TEXTURE: oily



ODOR: sweet odor, distinct odor, pungent odor



MOLECULAR WEIGHT: 104.14



MOLECULAR FORMULA: C8-H8



BOILING POINT: 295 F (146 C)



FREEZING POINT: -24 F (-31 C)



VAPOR PRESSURE: 10 mmHg @ 31 C



VAPOR DENSITY (air=1): 3.6



SPECIFIC GRAVITY (water=1): 0.9060



WATER SOLUBILITY: 0.02%



PH: Not available

VOLATILITY: Not available



ODOR THRESHOLD: 0.1 ppm



EVAPORATION RATE: 0.5 (butyl acetate=1)



COEFFICIENT OF WATER/OIL DISTRIBUTION: Not available



SOLVENT SOLUBILITY:

Soluble: alcohol, ether, acetone, benzene, petroleum ether, methanol, carbon disulfide





10. STABILITY AND REACTIVITY-----------Up to Table of Contents

REACTIVITY:

May polymerize. Avoid contact with light or storage and use above room temperature. Closed

containers may rupture violently.



CONDITIONS TO AVOID:

Avoid heat, flames, sparks and other sources of ignition. Containers may rupture or explode if

exposed to heat. Keep out of water supplies and sewers.



INCOMPATIBILITIES:

acids, metal salts, combustible materials, oxidizing materials, metals, peroxides



HAZARDOUS DECOMPOSITION:

Thermal decomposition products: oxides of carbon



POLYMERIZATION:

May polymerize. Avoid contact with heat, air, light, initiators or curing agents. Polymerizes with

evolution of heat. Avoid contact with temperatures above 65 C.





11. TOXICOLOGICAL INFORMATION-----------Up to Table of Contents



STYRENE MONOMER, INHIBITED:



IRRITATION DATA:

500 mg skin-human; 500 mg open skin-rabbit mild; 100 percent skin-rabbit moderate; 100 mg

eyes-rabbit severe; 100 mg/24 hour(s) eyes-rabbit moderate



TOXICITY DATA:

12 gm/m3/4 hour(s) inhalation-rat LC50; >5010 mg/kg skin-rabbit LD50 (Monsanto); 2650 mg/kg

oral-rat LD50



CARCINOGEN STATUS:

IARC: Human Inadequate Evidence, Animal Limited Evidence, Group 2B; ACGIH: A4 -Not

Classifiable as a Human Carcinogen



LOCAL EFFECTS:

Irritant: inhalation, skin, eye



ACUTE TOXICITY LEVEL:

Moderately Toxic: inhalation, ingestion

TARGET ORGANS:

central nervous system



MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE:

central nervous system disorders, respiratory disorders, skin disorders and allergies



TUMORIGENIC DATA:

Available.



MUTAGENIC DATA:

Available.



REPRODUCTIVE EFFECTS DATA:

Available.









ADDITIONAL DATA:

May cross the placenta. Alcohol may enhance the toxic effects.





12. ECOLOGICAL INFORMATION-----------Up to Table of Contents



ECOTOXICITY DATA:



FISH TOXICITY:

4020 ug/L 96 hour(s) LC50 (Mortality) Fathead minnow (Pimephales promelas)



INVERTEBRATE TOXICITY:

12100 ug/L 96 hour(s) LC50 (Mortality) Opossum shrimp (Mysidopsis bahia)



ALGAL TOXICITY:

78000 ug/L 96 hour(s) EC50 (Photosynthesis) Diatom (Skeletonema costatum)





13. DISPOSAL CONSIDERATIONS-----------Up to Table of Contents

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

Subject to disposal regulations: U.S. EPA 40 CFR 262. Hazardous Waste Number(s): D003.

Dispose in accordance with all applicable regulations.





14. TRANSPORT INFORMATION-----------Up to Table of Contents



U.S. DOT 49 CFR 172.101. SHIPPING NAME-UN NUMBER; HAZARD CLASS;

PACKING GROUP; LABEL:

Styrene monomer, inhibited-UN2055; 3; III; Flammable liquid







15. REGULATORY INFORMATION-----------Up to Table of Contents



U.S. REGULATIONS:

 TSCA INVENTORY STATUS: Y

 TSCA 12(b) EXPORT NOTIFICATION: Not listed.



CERCLA SECTION 103 (40CFR302.4): Y

  Styrene: 1000 LBS RQ



SARA SECTION 302 (40CFR355.30): N



SARA SECTION 304 (40CFR355.40): N



SARA SECTION 313 (40CFR372.65): Y

Styrene



SARA HAZARD CATEGORIES, SARA SECTIONS 311/312 (40CFR370.21):

 ACUTE: Y

 CHRONIC: Y

 FIRE: Y

 REACTIVE: Y

 SUDDEN RELEASE: N



OSHA PROCESS SAFETY (29CFR1910.119): N



STATE REGULATIONS:

 California Proposition 65: N



EUROPEAN REGULATIONS:



EC NUMBER (EINECS): 202-851-5



EC RISK AND SAFETY PHRASES:

 R 10        Flammable.

 R 20        Harmful by inhalation.

 R 36/38     Irritating to eyes and skin.

 S2          Keep out of reach of children.

 S 23        Do not breathe gas, fumes, vapour, or spray.



CONCENTRATION LIMITS:

C>=12.5% Xn R 20-36/38





16. OTHER INFORMATION-----------Up to Table of Contents









Matheson Tri-Gas 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 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.

©Copyright 1984-1999 MDL Information Systems. ©Copyright 2000 Matheson Tri-Gas. All rights

reserved.