Product ID:HYDROGEN
MSDS Date:04/01/1995
FSC:6830
NIIN:00N069032
MSDS Number: CBJWG

Emergency Phone: 800-424-9300(CHEMTREC)

Info Phone: 908-464-8100

Cage: HO796

Telephone: 908-464-8100

Cage: HO796

HYDROGEN

CAS: 1333-74-0

RTECS: MW8900000

Fraction By Weight: >99.5%

OSHA PEL SIMPLE ASPHYXIANT

ACGIH TLV: SIMPLE ASPHYXIANT

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:EYE/SKIN:NONE KNOWN. INGEST:NONE
KNOWN. INGEST IS UNLIKELY AS PROD IS GAS AT ROOM TEMP. INHAL:PROD
IS NON-TOX SIMPLE ASPHY. HIGH CONCS MAY EXCLUDE ADEQ SUPPLY OF OXYG
TO LUNGS. EFTS OF OXYG DEFICIENCY RSLTG FROM SIMPLE ASPHYS MAY
INCL:RAPID BRTHG, DIMINISHED MENTAL ALERTNESS, IMPAIRED MUSCULAR
COORD, (EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:HLTH HAZ:FAULTY JUDGEMENT, DEPRESS OF ALL
SENSATIONS, EMOTIONAL INSTABILITY & FATG. AS ASPHY PROGRESSES,
NAUS, VOMIT, PROSTRATION & LOSS OF CONSCIOUSNESS MAY RSLT,
EVENTUALLY LEADING TO CONVLS, COMA & DEATH. OXYG DEFICIENCY DURING
PREGNANCY HAS PRDCD DEVEL ABNORMS IN HUMANS & EXPTL ANIMALS.
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

First Aid:PROMPT MED ATTN IS MANDATORY IN ALL CASES OF OVEREXP. RESCUE
PERS SHOULD BE EQUIPPED W/NIOSH/MSHA APPRVD SCBA. INGEST:CALL MD
IMMED . EYES:IMMED FLUSH W/POTABLE WATER FOR MIN OF 15 MINS, SEEK
AS SISTANCE FROM MD . SKIN:FLUSH W/COPIOUS AMTS OF WATER. CALL MD .
INHAL:VICTIMS SHOULD BE ASSISTED TO UNCONTAM AREA & INHALE FRESH
AIR. QUICK REMOVAL FROM CONTAM AREA IS MOST IMPORTANT. UNC ON PERS
SHOULD BE MOVED TO UNCONTAM AREA, & IF BRTHG HAS STOPPED, ADMIN
ARTF RESUSCITATION & SUPP OXYG.FURTHER TREATMENT SHOULD BE
SYMPTOMATIC & SUPPORTIVE.

Flash Point:EXTREMELY FLAMM
Lower Limits:4%
Upper Limits:74.5%
Extinguishing Media:WATER, DRY CHEMICALS, CARBON DIOXIDE.
Fire Fighting Procedures:USE NIOSH/MSHA APPRVD SCBA & FULL PROT EQUIP .
IF POSS, STOP FLOW OF GAS MIXT. USE WATER SPRAY TO COOL SURROUND
CNTNRS. WATER FOG MAY BE USED TO CREATE VENT. VENT FANS MUST BE
EXPLO PROOF.
Unusual Fire/Explosion Hazard:EXTREMELY FLAMMABLE GAS. HYDROGEN IS VERY
LIGHT & MAY COLLECT IN UPPER PORTIONS OF STORAGE AREAS. HYDROGEN
BURNS W/ALMOST INVISIBLE FLAME.

Spill Release Procedures:EVACUATE ALL PERS FROM AFFECTED AREA. USE
APPROP PROT EQUIP. IF LEAK IS IN USER'S EQUIP, BE CERTAIN TO PURGE
PIPING W/INERT GAS PRIOR TO ATTEMPTING REPAIRS. IF LEAK IS IN
CNTNR/CNTNR VALVE, CONT APPRO P EMER TELEPHONE #/CALL YOUR CLOSEST
BOC LOCATION.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:ELEC CLASSIFICATION:CLASS 1, GRP B.
EARTH-GROUND & BOND ALL LINES & EQUIP ASSOC W/HYDROGEN SYS. ELEC
EQUIP SHOULD BE NON SPARKING & EXPLO PROOF.
Other Precautions:SIMPLE ASPHY-THIS PROD DOES NOT CNTN OXYG & MAY CAUSE
ASPHYXIA IF RELS IN CONFINED AREA. MAINTAIN OXYG LEVELS >19.5%.
FLAMM. THIS GAS MIXT IS NONCORR. HOWEVER, HYDROGEN CAN INTERACT
W/SOME METALS (HAR DENED STEELS) TO CAUSE EMBRITTLEMENT. USE ONLY
IN WELL-VENTED AREAS. VALVE PROT CAPS MUST REMAIN IN PLACE (SUP
DAT)

Respiratory Protection:NIOSH/MSHA APPROVED POSITIVE PRESSURE AIR LINE
RESPIRATOR W/FULL-FACE MASK & ESCAPE BOTTLE OR NIOSH/MSHA APPROVED
SELF-CONTAINED BREATHING APPARATUS SHOULD BE AVAILABLE FOR
EMERGENCY USE.
Ventilation:LOC EXHST TO PVNT ACCUM OF HIGH CONCS SO AS REDUCE OXYG
LEVEL IN AIR TO <19.5% & TO KEEP GAS MIXT BELOW LEL (4%).
Protective Gloves:IMPERVIOUS GLOVES .
Eye Protection:ANSI APPROVED CHEM WORKERS GOGGS .
Other Protective Equipment:EYE WASH FOUNTAIN & DELUGE SHOWER WHICH MEET
ANSI DESIGN CRITERIA . SAFETY SHOES/OTHER FOOTWEAR AS APPROP FOR
JOB.
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
OTHER PREC: UNLESS CNTNR IS SECURED W/VALVE PROT OUTLET PIPED TO USE
POINT. DO NOT DRAG, SLIDE/ROLL CYL. USE SUITABLE HAND TRUCK FOR CYL
MOVEMENT. USE PRESS REDUCING REGULATOR WHEN CONNECTING CYL TO L
OWER PRESS (<3000 PSIG) PIPING/SYS. DO NOT HEAT CYL BY ANY MEANS TO
INCR DISCHARGE RATE OF PROD FROM CYL. (OTHER INFO)

Boiling Pt:B.P. Text:-432F,-258C
Melt/Freeze Pt:M.P/F.P Text:-435F,-259C
Vapor Pres:SUPERCRITICAL.
Vapor Density:0.069
Solubility in Water:SLIGHT
Appearance and Odor:COLORLESS, ODORLESS GAS.

Stability Indicator/Materials to Avoid:YES
OXIDIZERS. FLUORINE & HYDROGEN REACT AT 418F (-250C) WHEN IMPURITIES
ARE PRESENT. LITHIUM METAL WILL BURN IN HYDROGEN ATM.
Stability Condition to Avoid:CHLORINE/HYDROGEN MIXTURES WILL EXPLODE IF
EXPOSED TO LIGHT.
Hazardous Decomposition Products:NONE SPECIFIED BY MANUFACTURER.

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE OF RESIDUAL WASTE OR
UNUSED QUANTITIES. RETURN IN SHIPPING CONTAINER PROPERLY LABELED,
W/ANY VALVE OUTLET PLUGS OR CAPS SECURED & VALVE PROTECTION CAP IN
PLACE TO BOC GASES O R AUTHORIZED DISTRIBUTOR FOR PROPER DISPOSAL.

Toxicological Information:OTHER INFO: IN ENCLSD SPACE SUCH AS CAR
TRUNK, VAN/STATION WAGON. LEAK CAN RSLT IN FIRE, EXPLO, ASPHY/TOX
EXPOS. COMPRESSED GAS CYLS SHALL NOT BE REFILLED W/OUT EXPRESS
WRITTEN PERMISSION OF OWNER. SH IPMENT OF COMPRESSED GAS CYL WHICH
HAS NOT BEEN FILLED BY OWNER/WITH HIS/HER (WRITTEN) CONSENT IS A
VIOLATION OF TRANSPORTATION REGULATIONS.

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.