Product ID:ISOPRENE
MSDS Date:Jan 24 1989
MSDS Number: EEEIQ
Kit Part:=== Responsible Party ===
Company Name:MATHESON TRI-GAS, INC.
Address:959 ROUTE 46 EAST
City:PARSIPPANY
State:NJ
ZIP:07054-0624
Country:US
Info Phone Num:(USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)
780-471-4036
Chemtrec Ind/Phone:18004249300

Telephone: (USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)

ISOPRENE

CAS: 78-79-5

Fraction By Weight: 100.0%

Reports of Carcinogenicity:NTP:Yes IARC:Yes OSHA:No
Health Hazards Acute and Chronic:INHALATION: SHORT TERM EXPOSURE:
irritation, nausea, headache, symptoms of drunkenness, suffocation
LONG TERM EXPOSURE: cancer SKIN CONTACT: SHORT TERM EXPOSURE:
irritation LONG TERM EXPOSURE: no information is available EYE
CONTACT: SHORT TERM EXPOSURE: irritation LONG TERM EXPOSURE: no
information is available INGESTION: SHORT TERM EXPOSURE: stomach
pain, dizziness LONG TERM EXPOSURE: no information is available
Medical Cond Aggravated by Exposure:

First Aid: 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 medical attention, if
needed. Thoroughly clean and dry contaminated clothing and shoes
before reuse. EYE CONTACT: Flush eyes with plenty of water for at
least 15 minutes. Then get immediate medical attention. INGESTION:
If a large amount is swallowed, get medical attention. NOTE TO
PHYSICIAN: For inhalation, consider oxygen.

Flash Point:-63 F (-53 C) (SCC)
Autoignition Temp:743 F (395 C)
Lower Limits:1.5%
Upper Limits:8.9%
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). Water may be ineffective. 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. Avoiinhalation of material or combustion
by-products. Stay upwind and keep out of low areas.
Unusual Fire/Explosion Hazard:Severe fire hazard. Vapor/air mixtures
are explosive. The vapor is heavier than air. Vapors or gases may
ignite at distant ignition sources and flash back.

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. Store in a cool, dry place. Store in a well-ventilated
area. Store outside or in a detached building. Keep separated from
incompatible substances.
Other Precautions:

Respiratory Protection:Under conditions of frequent use or heavy
exposure, respiratory protection may be needed. Respiratory
protection is ranked in order from minimum to maximum. Consider
warning properties before use. Any supplied-air respirator with a
full facepiece that is operated in a pressure-demand or other
positive-pressure mode. Any self-contained breathing apparatus that
has a full facepiece and is operated in a pressure-demand or other
positive-pressure mode. 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 or process enclosure 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
ISOPRENE: 50 ppm AIHA recommended TWA

Boiling Pt:93 F (34 C)
Melt/Freeze Pt:-231 F (-146 C)
Vapor Pres:493 mmHg @ 20 C
Vapor Density:2.35
Spec Gravity:0.6806
pH:Not available
Evaporation Rate & Reference:Not available
Solubility in Water:insoluble
Appearance and Odor:PHYSICAL STATE:liquid COLOR:colorless PHYSICAL
FORM:volatile liquid ODOR:petroleum odor
Corrosion Rate:

Stability Indicator/Materials to Avoid:May polymerize. Avoid contact
with air, light or storage and use above room temperature.
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, light, air, water or incompatible materials.

Waste Disposal Methods:Dispose in accordance with all applicable
regulations. Subject to disposal regulations: U.S. EPA 40 CFR 262.
Hazardous Waste Number(s): D003.

Toxicological Information:ISOPRENE: TOXICITY DATA: 180 gm/m3/4 hour(s)
inhalation-rat LC50 CARCINOGEN STATUS: NTP: Anticipated Human
Carcinogen; IARC: Human No Adequate Data, Animal Sufficient
Evidence, Group 2B ACUTE TOXICITY LEVEL: Slightly Toxic: inhalation
TARGET ORGANS: central nervous system TUMORIGENIC DATA: Available.
MUTAGENIC DATA: Available.

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: 75000 ug/L 96 hour(s) LC50
(Mortality) Fathead minnow (Pimephales promelas) ENVIRONMENTAL
SUMMARY: Moderately toxic to aquatic life.

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Isoprene, inhibited ID NUMBER: UN1218 HAZARD CLASS OR DIVISION: 3
PACKING GROUP: I 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): Not regulated.
Federal Regulatory Information:CERCLA SECTIONS 102a/103 HAZARDOUS
SUBSTANCES (40 CFR 302.4): Isoprene: 100LBSRQ OSHA PROCESS SAFETY
(29CFR1910.119): Not regulated.
State Regulatory Information: California Proposition 65: Known to the
state of California to cause the following: Isoprene Cancer (May
01, 1996)