Product ID:METHANE, METHYL HYDRIDE, MARSH GAS
MSDS Date:05/01/1993
FSC:6665
NIIN:00-542-1442
MSDS Number: BPFCN

Emergency Phone: 800-523-9374 OR 215-481-7711

Info Phone: 800-752-1597

Cage: 00742

Telephone: 800-345-3148/ 800-752-1597

Cage: 15927

METHANE

CAS: 74-82-8

RTECS: PA1490000

Fraction By Weight: 2.5%

ACGIH TLV: ASPHYXIANT; 9495

Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:METHANE IS NONTOXIC. IT CAN, HOWEVER,
REDUCE THE AMOUNT OF OXYGEN AVAILABLE TO SUPPORT LIFE. EXPOSURE TO
OXYGEN-DEFICIENT ATMOSPHERES (<19.5%) MAY PRODUCE ASPHYXIATION. AT
VERY LOW CONCENTRATIONS OF O XYGEN, UNCONSCIOUSNESS AND DEATH MAY
OCCUR WITHOUT WARNING.
Explanation of Carcinogenicity:NO INGREDIENT OF A CONCENTRATION OF 0.1%
OR GREATER IS LISTED AS A CARCINOGEN OR SUSPECTED CARCINOGEN.
Effects of Overexposure:INHALATION: HIGH CONCENTRATIONS OF METHANE SO
AS TO EXCLUDE AN ADEQUATE SUPPLY OF OXYGEN TO THE LUNGS CAUSE
DIZZINESS, DEEPER BREATHING DUE TO AIR HUNGER, POSSIBLE NAUSEA, &
EVENTUAL UNCONSCIOUSNESS.
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

First Aid:INHALATION: CONSCIOUS PERSONS SHOULD BE ASSISTED TO AN
UNCONTAMINATED AREA AND INHALE FRESH AIR. QUICK REMOVAL FROM THE
CONTAMINATED AREA IS MOST IMPORTANT. UNCONSCIOUS PERSONS SHOULD BE
MOVED TO AN U NCONTAMINATED AREA, GIVEN MOUTH-TO-MOUTH
RESUSCITATION & SUPPLEMENTAL OXYGEN. FURTHER TREATMENT SHOULD BE
SYMPTOMATIC & SUPPORTIVE.

Flash Point:-306F,-188C
Autoignition Temp:Autoignition Temp Text:1076F
Lower Limits:5%
Upper Limits:15%
Extinguishing Media:WATER, CARBON DIOXIDE, DRY CHEMICAL.
Fire Fighting Procedures:IF POSSIBLE WITHOUT RISK, STOP FLOW OF
METHANE. FROM A SAFE DISTANCE USE WATER SPRAY TO COOL SURROUNDING
CONTAINERS UNTIL WELL AFTER FIRE IS OUT.
Unusual Fire/Explosion Hazard:SHOULD FLAME BE EXTINGUISHED & FLOW OF
GAS CONTINUE, INCREASE VENTILATION TO PREVENT FLAMMABLE OR
EXPLOSIVE MIXTURE FORMATION. CYLINDERS MAY VENT OR EXPLODE.

Spill Release Procedures:EVACUATE ALL PERSONNEL FROM AFFECTED AREA. USE
APPROPRIATE PROTECTIVE EQUIPMENT. IF LEAK IS IN USER'S EQUIPMENT,
BE SURE TO PURGE PIPING W/INERT GAS PRIOR TO ATTEMPTING REPAIRS. IF
LEAK IS IN CYLINDER VALVE, CALL THE "800" EMERGENCY NUMBERLISTED.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:STORE IN COOL/DRY/WELL-VENTILATED AREA
OF NON-COMBUSTIBLE CONSTRUCTION AWAY FROM HEAVILY TRAVELED AREAS &
EMERGENCY EXITS. DON'T STORE IN TEMPS >125F.
Other Precautions:STORE CYLINDERS UPRIGHT/FIRMLY SECURED TO PREVENT
FALLING. FULL & EMPTY CYLINDERS SHOULD BE SEGREGATED. DON'T SMOKE.
USE ONLY IN WELL VENTILATED AREAS. DON'T DRAG/SLIDE/ROLL CYLINDERS.
USE SUITABLE HA ND TRUCK TO MOVE CYLINDERS.

Respiratory Protection:POSITIVE PRESSURE AIR LINE WITH MASK OR SELF-
CONTAINED BREATHING APPARATUS SHOULD BE USED FOR EMERGENCY USE.
Ventilation:USE HOOD WITH FORCED VENTILATION &/OR LOCAL EXHAUST TO
PREVENT ACCUMULATION ABOVE THE TLV.
Protective Gloves:PLASTIC OR RUBBER
Eye Protection:SAFETY GOGGLES OR GLASSES
Other Protective Equipment:SAFETY SHOES, SAFETY SHOWER & EYEWASH
FOUNTAIN
Work Hygienic Practices:NO SMOKING
Supplemental Safety and Health
HCC IS BASED ON THE FACT THAT THIS CONTAINS 2.5% METHANE AND IS NOT
PURE METHANE-PROBABLY IS NOT FLAMMABLE AT THIS CONCENTRATION (LEL
IS 5%). MSDS IS FOR ONE INGREDIENT FOUND IN THIS NSN.

HCC:G3
Boiling Pt:B.P. Text:-259F,-161C
Melt/Freeze Pt:M.P/F.P Text:-296F,-182C
Vapor Density:.042LB/FT3
Spec Gravity:0.555
Solubility in Water:NEGLIGIBLE
Appearance and Odor:COLORLESS, ODORLESS GAS (CONTAINED IN A MIXTURE
W/AIR IN A CYLINDER).

Stability Indicator/Materials to Avoid:YES
OXIDIZERS.
Stability Condition to Avoid:NONE.
Hazardous Decomposition Products:NONE.
Conditions to Avoid Polymerization:WILL NOT OCCUR.

Waste Disposal Methods:ALL FEDERAL, STATE, & LOCAL REGULATIONS.
REGARDING HEALTH AND POLLUTION SHOULD BE FOLLOWED IN WASTE
DISPOSAL. CONTACT AIR PRODUCTS FOR SPECIFIC RECOMMENDATIONS. DO NOT
DISPOSED OF UNUSED QUANTITIES.

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.