Product ID:METHANE, COMPRESSED GAS
MSDS Date:Jan 24 1989
MSDS Number: EEEIX
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)

METHANE

CAS: 74-82-8

Fraction By Weight: 100.0%

Reports of Carcinogenicity:NTP:No IARC:No OSHA:No
Health Hazards Acute and Chronic:INHALATION: SHORT TERM EXPOSURE:
nausea, vomiting, dizziness, tingling sensation, suffocation,
convulsions, coma LONG TERM EXPOSURE: no information on significant
adverse effects SKIN CONTACT: SHORT TERM EXPOSURE: no information
is available LONG TERM EXPOSURE: no information is available EYE
CONTACT: SHORT TERM EXPOSURE: no information is available LONG TERM
EXPOSURE: no information is available INGESTION: SHORT TERM
EXPOSURE: ingestion of a gas is unlikely 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 exposed skin with soap and water. EYE CONTACT: Flush eyes with
plenty of water. INGESTION: If a large amount is swallowed, get
medical attention. NOTE TO PHYSICIAN: For inhalation, consider
oxygen.

Flash Point:-369 F (-223 C)
Autoignition Temp:999 F (537 C)
Lower Limits:5.0%
Upper Limits:15%
Extinguishing Media:carbon dioxide, regular dry chemical 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. 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: Stop leak if possible without personal risk. Let burn unless
leak can be stopped immediately. For smaller tanks or cylinders,
extinguish and isolate from other flammables. Evacuation radius:
800 meters (1/2 mile). Stop flow of gas.
Unusual Fire/Explosion Hazard:Severe fire hazard. Severe explosion
hazard. Pressurized containers may rupture or explode if exposed to
sufficient heat. Vapor/air mixtures are explosive above flash
point. Electrostatic discharges may be generated by flow or
agitation resulting in ignition or explosion.

Spill Release Procedures:Avoid heat, flames, sparks and other sources
of ignition. Stop leak if possible without personal risk. Reduce
vapors with water spray. Keep unnecessary people away, isolate
hazard area and deny entry. Remove sources of ignition. Ventilate
closed spaces before entering.
Neutralizing Agent:

Handling and Storage Precautions:Store and handle in accordance with
all current regulations and standards. Grounding and bonding
required. Subject to storage regulations: U.S. OSHA 29 CFR
1910.101. 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. 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:Ventilation equipment should be explosion-resistant if
explosive concentrations of material are present. Provide local
exhaust ventilation system. Ensure compliance with applicable
exposure limits.
Protective Gloves:Wear appropriate chemical resistant gloves.
Eye Protection:Eye protection not required, but recommended.
Other Protective Equipment:Protective clothing is not required.
Supplemental Safety and Health
METHANE: ACGIH (simple asphyxiant)

Boiling Pt:-260 F (-162 C)
Melt/Freeze Pt:-297 F (-183 C)
Vapor Pres:760 mmHg @ -161 C
Vapor Density:0.555
Spec Gravity:Not applicable
pH:Not applicable
Evaporation Rate & Reference:Not applicable
Solubility in Water:3.5% @ 17 C
Appearance and Odor:PHYSICAL STATE:gas COLOR:colorless ODOR:odorless
Corrosion Rate:

Stability Indicator/Materials to Avoid:Stable at normal temperatures
and pressure.
Stability Condition to Avoid:Avoid heat, flames, sparks and other
sources of ignition. Containers may rupture or explode if exposed
to heat.
Hazardous Decomposition Products:Thermal decomposition products: oxides
of carbon Thermal decomposition products: oxides of carbon
Conditions to Avoid Polymerization:Will not polymerize.

Waste Disposal Methods:Dispose in accordance with all applicable
regulations. Subject to disposal regulations: U.S. EPA 40 CFR 262.
Hazardous Waste Number(s): D001.

Toxicological Information:Not 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:FATE AND TRANSPORT: KOW: 724.44 (log = 2.86) (estimated from
water solubility) KOC: 2192.80 (log = 3.34) (estimated from water
solubility) HENRY'S LAW CONSTANT: 4.6 E -4 atm-m3/mol
BIOCONCENTRATION: 1.69 (estimated from water solubility) AQUATIC
PROCESSES: 1.0422951 hours (River Model: 1 m deep, 1 m/s flow, 3
m/s wind) ENVIRONMENTAL SUMMARY: Relatively non-persistent in the
environment. Not expected to leach through the soil or the
sediment. Accumulates very little in the bodies of living
organisms. Moderately volatile from water.

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Methane, compressed or Natural gas, compressed (with high methane
content) ID NUMBER: UN1971 HAZARD CLASS OR DIVISION: 2.1 LABELING
REQUIREMENTS: Flammable gas QUANTITY LIMITATIONS: PASSENGER
AIRCRAFT OR RAILCAR: Forbidden CARGO AIRCRAFT ONLY: 150 kg

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: No FIRE: Yes
REACTIVE: No SUDDEN RELEASE: Yes SARA TITLE III SECTION 313 (40
CFR 372.65): Not regulated.
Federal Regulatory Information:CERCLA SECTIONS 102a/103 HAZARDOUS
SUBSTANCES (40 CFR 302.4): Not regulated. OSHA PROCESS SAFETY
(29CFR1910.119): Not regulated.
State Regulatory Information: California Proposition 65: Not regulated.