Flash Point:88 F (31 C) (CC)
Autoignition Temp:914 F (490 C)
Lower Limits:1.1%
Upper Limits:6.1%
Extinguishing Media:regular dry chemical, carbon dioxide, water,
regular foam Large fires: Use regular foam or flood with fine water
spray.
Fire Fighting Procedures: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 ocombustion by-products. Stay upwind and
keep out of low areas. Water may be ineffective.
Unusual Fire/Explosion Hazard: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.

Neutralizing Agent:

Handling and Storage Precautions: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.
Other Precautions:

Respiratory Protection: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.
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.
Protective Gloves:Wear appropriate chemical resistant gloves.
Eye Protection:Wear splash resistant safety goggles. Provide an
emergency eye wash fountain and quick drench shower in the
immediate work area.
Other Protective Equipment:Wear appropriate chemical resistant
clothing.
Supplemental Safety and Health
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
ACGIH TWA 40 ppm ACGIH STEL 50 ppm (215 mg/m3) NIOSH recommended
TWA 10 hour(s) 100 ppm (425 mg/m3) NIOSH recommended STEL

Boiling Pt:295 F (146 C)
Melt/Freeze Pt:-24 F (-31 C)
Vapor Pres:10 mmHg @ 31 C
Vapor Density:3.6
Spec Gravity:0.9060
pH:Not available
Evaporation Rate & Reference:0.5 (butyl acetate=1)
Solubility in Water:0.02%
Appearance and Odor:PHYSICAL STATE:liquid COLOR:colorless to yellow
TEXTURE:oily ODOR:sweet odor, distinct odor, pungent odor
Corrosion Rate:

Stability Indicator/Materials to Avoid:May polymerize. Avoid contact
with light or storage and use above room temperature. Closed
containers may rupture violently.
Stability Condition 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.
Hazardous Decomposition Products:Thermal decomposition products: oxides
of carbon Thermal decomposition products: oxides of carbon
Conditions to Avoid 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.

Waste Disposal Methods: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.

Toxicological Information: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.

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.

Ecological: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)

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Styrene monomer, inhibited ID NUMBER: UN2055 HAZARD CLASS OR
DIVISION: 3 PACKING GROUP: III LABELING REQUIREMENTS: Flammable
liquid

SARA Title III Information: SARA TITLE III SECTION 302 EXTREMELY
HAZARDOUS SUBSTANCES (40 CFR 355.30): Not regulated. SARA TITLE
III SECTION 304 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355.40): Not
regulated. SARA TITLE III SARA SECTIONS 311/312 HAZARDOUS
CATEGORIES (40 CFR 370.21): ACUTE: Yes CHRONIC: Yes FIRE: Yes
REACTIVE: Yes SUDDEN RELEASE: No SARA TITLE III SECTION 313 (40
CFR 372.65): STYRENE
Federal Regulatory Information:CERCLA SECTIONS 102a/103 HAZARDOUS
SUBSTANCES (40 CFR 302.4): STYRENE: 1000LBSRQ OSHA PROCESS SAFETY
(29CFR1910.119): Not regulated.
State Regulatory Information: California Proposition 65: Not regulated.