Product ID:METHANE
MSDS Date:01/01/1991
FSC:6830
NIIN:00N039730
MSDS Number: BSBFS

NATIONAL WELDERS

CHARLOTTE, NC 28231
US

Emergency Phone: 800-866-4422;800-424-9300(CHEMTREC)

Info Phone: 704-333-5475

Cage: 18264

NATIONAL WELDERS SUPPLY CO INC

31007 CHARLOTTE, NC 28231 US

Telephone: 704-333-5475

Cage: 18264

CYLINDERS SHLD BE STORED UPRIGHT AND FIRMLY SECURED

CYLS SHLD BE SEGREGATED. USE "FIRST IN-FIRST

PERIODS OF TIME. POST "NO SMOKING/OPEN FLAMES"

IN STOR/USE AREA. METHANE IS NONCORROSIVE & MAY BE

CYLINDER WHICH HAS NOT BEEN FILLED BY OWNER OR

CYLINDER WHICH HAS NOT BEEN FILLED BY OWNER OR

METHANE

CAS: 74-82-8

RTECS: PA1490000

ACGIH TLV: ASPHYXIANT

WARNING & CAUSE MORE DMG THAN IF IT BURNED OUT

ACGIH TLV: ASPHYXIANT

OXYGEN. FURTHER TREATMENT SHOULD BE

FLUSH W/POTABLE WATER FOR AT

SLIDE/ROLL CYLINDERS. USE SUITABLE HAND TRUCK

WHEN CONNECTING CYLINDER TO LOWER PRESS(<3000 PSIG)

INCREASE DISCHARGE RATE OF PRODUCT FROM CYLINDER.

BACKFLOW INTO CYLINDER. FOR ADDITIONAL HNDLG RECOMM

CYLINDERS FROM PHYSICAL DMG. STORE IN COOL, DRY, WELL

TRAFFICKED AREAS & EMER EXITS. DO NOT ALLOW TEMPS

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:INHAL: HIGH CONCENTRATIONS OF METHANE
SO AS TO EXCLUDE AN ADEQUATE SUPPLY OXYGEN TO THE LUNGS CAUSE
DIZZINESS, DEEPER BREATHING DUE TO AIR HUNGER, POSSIBLE NAUSEA &
EVENTUAL UNCONSCIOUSNESS.
Explanation of Carcinogenicity:NOT RELEVANT.
Effects of Overexposure:SEE HEALTH HAZARDS.
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

First Aid:PROMPT MED ATTN IS REQD IN ALL CASES OF OVEREXP TO METHANE.
RESCUE PERS SHLD BE EQUIPPED W/APPROP PROT EQUIP(SCBA,ETC) TO PVNT
UNNEC EXPOS & BE COGNIZANT OF EXTREME FIRE & EXPLOS HAZ. INHAL:
CONSCIOUS PERS SHLD BE ASSISTED TO UNCONTAMD AREA & INHALE FRESH
AIR. QUICK REMOVAL FROM CONTAMD AREA IS MOST IMPORTANT. UNCON PERS
SHLD BE MOVED TO UNCONTAMD AREA, GIVEN ARTF RESP & SUPPLEMENTAL
(ING 3)

Flash Point:-386F,-232C
Lower Limits:5%
Upper Limits:15%
Extinguishing Media:WATER, CARBON DIOXIDE, DRY CHEMICAL.
Fire Fighting Procedures:WEAR NIOSH/MSHA APPRVD SCBA & FULL PROT EQUIP
. IF POS W/OUT RISK, STOP FLOW OF METHANE. FROM SAFE DISTANCE USE
WATER SPRAY TO COOL SURROUNDING(SUPP DATA)
Unusual Fire/Explosion Hazard:METHANE GAS IS VERY FLAMM W/EXTENSIVE
EXPLOS RANGE. BEST FIRE-FIGHTING TECHNIQUE MAY BE SIMPLY TO LET THE
BURNING GAS ESCAPE FROM PRESS CYLINDER (SUPP DATA)

Spill Release Procedures:EVAC ALL PERS FROM AFFECTED AREA. USE APPROP
PROT EQUIP. IF LEAK IS IN USERS EQUIP, BE CERTAIN TO PURGE PIPING
W/INERT GAS PRIOR TO ATTEMPTING REPAIRS. IF LEAK IS IN
CYLINDER/CYLINDER VALVE, CALL EMER #.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:USE ONLY IN WELL VENT AREAS. VALVE
PROT CAPS MUST REMAIN IN PALCE UNLESS CYLINDER IS SECURED W/VALVE
OUTLET PIPED TO USE POINT. DO NOT DRAG (ING 5)
Other Precautions:EARTH-GROUND & BOND ALL LINES & EQUIP ASSOC W/METHANE
SYSTEM. ELEC EQUIP SHLD BE NON-SPARKING/EXPLOS PROOF. COMPRESSED
GAS CYLINDER SHLD NOT BE REFILLED EXCEPT BY QUALIFIED PRODUCERS OF
COMPRESSED GAS ES. SHIPMENT OF COMPRESSED GAS(ING 16)

Respiratory Protection:NIOSH/MSHA APPROVED POSITIVE PRESSURE AIR LINE
WITH MASK/SCBA SHOULD BE AVAILABLE FOR EMERGENCY USE.
Ventilation:LOCAL EXHAUST SUFFICIENT. USE HOOD W/FORCED VENT &/LOC
EXHST TO PVNT ACCUM >LEL I/A/W ELEC CODES.
Protective Gloves:PLASTIC OR RUBBER GLOVES.
Eye Protection:SAFETY GLASSES OR GOGGLES.
Other Protective Equipment:SAFETY SHOES, SAFETY SHOWER, EYEWASH
FOUNTAIN.
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
VP: (21.1C) ABOVE CRITICAL TEMP OF 116.17F. FIRE FIGHT PROC:CNTNRS
UNTIL WELL AFTER FIRE IS OUTL. IF POSS W/OUT RISK, MOVE CYLINDERS
FROM FIRE AREA. EXPLO HAZ: TANK CAR/PIPLINES. NEVER EXTING BURNING
GAS W/OUT FIRST LOCATING & SEALING ITS SOURCE. OTHERWISE, THE STILL
LEAKING GAS COULD EXPLOS RE-IGNITE W/OUT (ING 2)

Boiling Pt:B.P. Text:-259F,-161C
Melt/Freeze Pt:M.P/F.P Text:-296F,-182C
Vapor Pres:SUPP DATA
Spec Gravity:0.555 (AIR=1)
Appearance and Odor:COLORLESS, ODORLESS GAS.

Stability Indicator/Materials to Avoid:YES
NONE
Stability Condition to Avoid:NONE
Hazardous Decomposition Products:NONE
Conditions to Avoid Polymerization:RELEVANT.

Waste Disposal Methods:CONT YOUR SUPPLIER/LICENSED CONTRACTOR FOR
DETAILED RECOMMS. FOLLOW APPLIC FED, STATE & LOCAL REGS. REMOVE
LEAKING/DEFECTIVE CYLINDERS TO SAFE,OUTSIDE,POSTED,DISCHARGE
LOCATION. LET METHANE GAS DISCHA RGE A MOD RATE. WHEN EMPTY, RETURN
TO SUPPLIER.

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.