STYRENE MONOMER

MATERIAL SAFETY DATA SHEET



STYRENE MONOMER

MSDS No.  01259000 ANSI/ENGLISH

1.0   CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

PRODUCT NAME:  STYRENE MONOMER

MANUFACTURER/SUPPLIER:

Amoco Chemical Company
200 East Randolph Drive
Chicago, Illinois 60601 U.S.A.


EMERGENCY HEALTH INFORMATION: 
1 (800) 447-8735

EMERGENCY SPILL INFORMATION: 
1 (800) 424-9300 CHEMTREC (USA)

OTHER PRODUCT SAFETY INFORMATION: 
(312) 856-3907

2.0   COMPOSITION/INFORMATION ON INGREDIENTS


Component CAS# Range % by Wt.
Styrene 100-42-5 100

(See Section 8.0, "Exposure Controls/Personal Protection", for exposure guidelines)


3.0   HAZARDS IDENTIFICATION

EMERGENCY OVERVIEW:  Warning! Flammable. Causes skin irritation. Inhalation causes headaches, dizziness, drowsiness, nausea, and respiratory irritation. Harmful or fatal if liquid is aspirated into lungs. Causes mild eye irritation.

POTENTIAL HEALTH EFFECTS: 

EYE CONTACT:  Causes mild eye irritation.

SKIN CONTACT:  Causes skin irritation. See "Toxicological Information" section (Section 11.0).

INHALATION:  Inhalation causes headaches, dizziness, drowsiness, nausea, and respiratory irritation. See "Toxicological Information" section (Section 11.0).

INGESTION:  Harmful or fatal if liquid is aspirated into lungs. See "Toxicological Information" section (Section 11.0).

HMIS CODE: (Health:2) (Flammability:3) (Reactivity:0)

NFPA CODE: (Health:2) (Flammability:3) (Reactivity:0)

4.0   FIRST AID MEASURES

EYE:  Flush eyes with plenty of water. Get medical attention if irritation persists.

SKIN:  Immediately wash exposed skin with soap and water. Remove contaminated clothing and thoroughly clean and dry before reuse. Get immediate medical attention.

INHALATION:  If adverse effects occur, remove to uncontaminated area. Give artificial respiration if not breathing. Get immediate medical attention.

INGESTION:  If swallowed, do NOT induce vomiting. Get immediate medical attention.

5.0   FIRE FIGHTING MEASURES

FLASHPOINT: 88°F(31°C)

UEL: 6.1%

LEL: 1.1%

AUTOIGNITION TEMPERATURE: 914°F (490°C)

FLAMMABILITY CLASSIFICATION: Flammable Liquid.

EXTINGUISHING MEDIA:  Agents approved for Class B hazards (e.g., dry chemical, carbon dioxide, foam, steam) or water fog.

UNUSUAL FIRE AND EXPLOSION HAZARDS:  Flammable liquid. Vapor may explode if ignited in enclosed area.

FIRE-FIGHTING EQUIPMENT:  Firefighters should wear full bunker gear, including a positive pressure self-contained breathing apparatus.

PRECAUTIONS:  Keep away from sources of ignition (e.g., heat and open flames). Keep container closed. Use with adequate ventilation.

HAZARDOUS COMBUSTION PRODUCTS:  Hazardous polymerization possible with catalyst and heat.

6.0   ACCIDENTAL RELEASE MEASURES

Remove or shut off all sources of ignition. Remove mechanically or contain on an absorbent material such as dry sand or earth. Keep out of sewers and waterways.

7.0   HANDLING AND STORAGE

HANDLING:  After this container has been emptied, it may contain flammable vapors; observe all warnings and precautions listed for this product.

STORAGE:  Store in flammable liquids storage area. Store away from heat, ignition sources, and open flame in accordance with applicable regulations. Keep container closed.

8.0   EXPOSURE CONTROLS / PERSONAL PROTECTION

EYE:  Do not get in eyes. Wear chemical goggles.

SKIN:  Avoid prolonged or repeated skin contact. Wear protective clothing and gloves.

INHALATION: Use with adequate ventilation. If ventilation is inadequate, use NIOSH certified respirator that will protect against organic vapor and dust/mist.

ENGINEERING CONTROLS:  Control airborne concentrations below the exposure guidelines.

EXPOSURE GUIDELINES:

Component CAS# Exposure Limits
Styrene 100-42-5 OSHA PEL: 50ppm (skin) (1989);100ppm (skin) (1971)
OSHA STEL: 100ppm (skin) (1989); Not established. (1971)
OSHA Ceiling: 200ppm (skin) (1971)
ACGIH TLV-TWA: 20ppm
ACGIH TLV-STEL: 40ppm


9.0   CHEMICAL AND PHYSICAL PROPERTIES

APPEARANCE AND ODOR: Liquid. Colorless.

pH: 7.0

VAPOR PRESSURE: 4.3

VAPOR DENSITY: 3.6

BOILING POINT: 293.4°F(145°C)

MELTING POINT: -23.1°F(-30.6°C)

SOLUBILITY IN WATER: Slight, 0.1 to 1.0%.

SPECIFIC GRAVITY (WATER=1): 0.91

10.0   STABILITY AND REACTIVITY

STABILITY: Burning can be started easily.

CONDITIONS TO AVOID:  Keep away from ignition sources (e.g. heat, sparks, and open flames).

MATERIALS TO AVOID:  Avoid chlorine, fluorine, and other strong oxidizers.

HAZARDOUS DECOMPOSITION:  None identified.

HAZARDOUS POLYMERIZATION:  Hazardous polymerization possible with catalyst and heat.

11.0   TOXICOLOGICAL INFORMATION

ACUTE TOXICITY DATA: 

EYE IRRITATION: Testing not conducted. See Other Toxicity Data.

SKIN IRRITATION: Testing not conducted. See Other Toxicity Data.

DERMAL LD50: Testing not conducted. See Other Toxicity Data.

ORAL LD50: Testing not conducted. See Other Toxicity Data.

INHALATION LC50: Testing not conducted. See Other Toxicity Data.

OTHER TOXICITY DATA:  Epidemiology studies involving workers in the styrene, polystyrene, and reinforced plastics industries do not show increased cancer risk from occupational exposure to styrene. A recent, well-conducted chronic study show no increased incidence of cancer in rats from styrene exposure. In another recently, well-conducted chronic study, an increased incidence of lung cancer was observed in mice. The relevance of the mouse lung cancers to humans is uncertain. Earlier studies in which rats and mice were exposed to styrene by inhalation or ingestion are considered inadequate for assessing human cancer risk because of deficiencies in design, conduct, or interpretation.

Repeated exposures to styrene vapor in animal studies have resulted in liver toxicity in mice at levels above 100 ppm. Also, nasal lesions were observed at 50 ppm or higher in rats and 20 ppm or higher in mice.

Some evidence of hearing loss was observed in rats exposed to 800 ppm styrene vapor, but not at 200 ppm. No significant hearing loss is expected to occur in humans occupationally exposed to styrene. In addition it has been reported that some workers, primarily those with mean exposure levels greater than 50 ppm, develop small decreases in the ability to discriminate between colors. These effects were very subtle and not likely to be noticed.

Styrene did not cause birth defects in laboratory animal studies, although other developmental effects have been reported. It should be noted that these developmental effects occurred at exposure levels that were maternally toxic. Human studies do not show any significant risk of reproductive toxicity or birth defects from styrene exposure.

Mixed results have been reported for styrene in in vitro genotoxicity tests. However, there is no convincing evidence of cytogenic damage in laboratory animals exposed to styrene. Some cytogenetic studies on peripheral blood lymphocytes of workers exposed to styrene have reported increases in chromosomal damage, although there is no clear dose response relationship.

The International Agency for Research on Cancer (IARC) has evaluated styrene and has classified it as possibly carcinogenic to humans (Group 2B).

12.0   ECOLOGICAL INFORMATION

Ecological testing has not been conducted on this product.

13.0   DISPOSAL INFORMATION

Residues and spilled material are hazardous waste due to ignitability. Disposal must be in accordance with applicable federal, state, or local regulations.

The container for this product can present explosion or fire hazards, even when emptied! To avoid risk of injury, do not cut, puncture, or weld on or near this container. Since the emptied containers retain product residue, follow label warnings even after container is emptied.

14.0   TRANSPORTATION INFORMATION

U.S. DEPT OF TRANSPORTATION

Shipping Name Styrene Monomer, Inhibited
Hazard Class 3
Identification Number UN2055
Packing Group III

INTERNATIONAL INFORMATION:

Sea (IMO/IMDG)

Shipping Name Styrene Monomer, Inhibited
Class 3.3
Packing Group III
UN Number 2055
IMDG Code Page 3381
MARPOL Marine Pollutant

Air (ICAO/IATA)

Shipping Name Styrene Monomer, Inhibited
Class 3
Subsidiary Class UN2055
Packing Group III

European Road/Rail (ADR/RID)

Shipping Name Styrene Monomer, Inhibited
Class 3
Item 31°(C)

Canadian Transportation of Dangerous Goods 

Shipping Name Styrene Monomer, Inhibited
Hazard Class 3.3
Subsidiary Class 9.2
UN Number 2055
Packing Group III

15.0   REGULATORY INFORMATION

CERCLA SECTIONS 102a/103 HAZARDOUS SUBSTANCES (40 CFR Part 302.4): This product is reportable under 40 CFR Part 302.4 because it contains the following substance(s):

Component/CAS Number Weight % Component Reportable Quantity (RQ)
Styrene 100-42-5 100 1,000 lbs.



SARA TITLE III SECTION 302 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR Part 355): This product is not regulated under Section 302 of SARA and 40 CFR Part 355.

SARA TITLE III SECTIONS 311/312 HAZARDOUS CATEGORIZATION (40 CFR Part 370): This product is defined as hazardous by OSHA under 29 CFR Part 1910.1200(d).

SARA TITLE III SECTION 313 (40 CFR Part 372): This product contains the following substance(s), which is on the Toxic Chemicals List in 40 CFR Part 372:

Component/CAS Number Weight Percent
Styrene 100-42-5 100


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

OSHA HAZARD COMMUNICATION STANDARD:  Flammable liquid. Irritant. CNS Effects. IARC 2B Carcinogen.

WHMIS Controlled Product Classification:  B2, D2B, D2A,

EC INVENTORY (EINECS/ELINCS):  In compliance.

JAPAN INVENTORY (MITI):  Listed on inventory.

AUSTRALIA INVENTORY (AICS):  Listed on inventory.

KOREA INVENTORY (ECL):  Listed on inventory.

CANADA INVENTORY (DSL):  All of the components of this product are listed on the DSL.

PHILIPPINE INVENTORY (PICCS):  Not determined.

16.0   OTHER INFORMATION

Prepared by:

  Environment, Health and Safety Department

Issued: August 18, 1997

Supersedes: August 11, 1993


This material Safety Data Sheet conforms to the requirements of ANSI Z400.1.

This material safety data sheet and the information it contains is offered to you in good faith as accurate. We have reviewed any information contained in this data sheet which we received from sources outside our company. We believe that information to be correct but cannot guarantee its accuracy or completeness. Health and safety precautions in this data sheet may not be adequate for all individuals and/or situations. It is the user's obligation to evaluate and use this product safely and to comply with all applicable laws and regulations. No statement made in this data sheet shall be construed as a permission or recommendation for the use of any product in a manner that might infringe existing patents. No warranty is made, either express or implied.