BHDNB - HYDROGEN

Product Identification

Product ID:HYDROGEN
MSDS Date:07/10/1986
FSC:6830
NIIN:00-531-8097
MSDS Number: BHDNB

Responsible Party
AIR PRODUCTS AND CHEMICALS, INC.
2043 S 35TH ST
TACOMA, WA 98411-0393
US

Cage: 00742

Contractor
OXYGEN SALES AND SERVICE INC
11393 TACOMA, WA 98411-0393 US

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

Cage: 5H199

Ingredients

HYDROGEN

CAS: 1333-74-0

RTECS: MW8900000

Hazards

Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:HYDROGEN IS NONTOXIC AND CLASSIFIED AS
A SIMPLE ASPHYXIANT,BUT IT IS EXTREMELY FLAMMABLE.THE AMOUNT OF
HYDROGEN GAS NECESSARY TO REDUCE OXYGEN CONCENTRATIONS BELOW LIFE
SUPPORT LEVELS IS WELL W/IN THE FLAMMABLE RANGE.DO NOT ENTER AREAS
CONTAINING FLAMMABLE MIXTURES DUE TO THE IMMEDIATE FIRE & EXPLOSION
HAZARD.
Effects of Overexposure:SYMPTOMS OF ANOXIA OCCUR ONLY WHEN GAS
CONCENTRATIONS ARE WITHIN FLAMMABLE RANGE& THE MIXTURE HAS NOT
IGNITED.CONTACT OF SKIN W/LIQ HYDROGEN OR COLD GAS VAPORS CAN CAUSE
CRYOGENIC BURNS & FREEZE TISSU ES.

First Aid

First Aid:IF CRYOGENIC LIQ OR COLD BOIL-OFF GAS CONTACTS WORKER'S SKIN
OR EYES, FROZEN TISSUES SHOULD BE FLOODED OR SOAKED W/TEPID WTR.DO
NOT USE HOT WTR.CRYOGENIC BURNS WHICH RESULT IN BLISTERING OR
DEEPER TIS SUE FREEZING SHOULD BE SEEN PROMPTLY BYA
PHYSICIAN.PERSON SUFFERING FROM LACK OF OXYGEN SHOULD BE MOVED TO
AREA W/NORMAL ATMOSPHERE.ASSISTED RESPIRATION & SUPPLEMENTAL OXYGEN
FOR PERSON NOT BREATHING

Fire Fighting

Flash Point:NA
Autoignition Temp:Autoignition Temp Text:932F
Lower Limits:74.2%
Upper Limits:4.0%
Extinguishing Media:DRY CHEMICAL, CARBON DIOXIDE, OR HALON.
Fire Fighting Procedures:SHUT OFF SOURCE OF HYDROGEN.WHEN
POSSIBLE,ALLOW FIRE TO BURN ITSELF OUT.SPRAY WTR ON ADJOINING EQUIP
TO KEEP IT COOL.
Unusual Fire/Explosion Hazard:HYDROGEN CAN BURN W/ALMOST AN INVISIBLE
FLAME OF LOW THERMAL RADIATION.PEOPLE HAVE UNKNOWINGLY WALKED INTO
HYDROGEN FLAMES.

Accidental Release

Spill Release Procedures:DO NOT ENTER AREAS CONTAINING FLAMMABLE
MIXTURES OF HYDROGEN IN AIR.AVOID CONTACT OF SKIN W/LIQ HYDROGEN OR
COLD BOIL-OFF GA.VENTILATE ENCLOSED AREAS TO PREVENT FORMATION OF
FLAMMABLE OR OXY-DEFICIENT ATMOSPHERES.ELIMINATE ALL POTENTIAL
SOURCES OF IGN

Handling

Handling and Storage Precautions:USE ONLY IN WELL VENTILATED AREA.DO
NOT DRAG,ROLL,OR SLIDE CYLS.USE SUITABLE HAND TRUCK.KEEP CYLS
AWAY FROM HEAT.SEGREGATE FULL/EMPTY CYLS.
Other Precautions:LIQ HYDROGEN IN EXPOSED PIPING CAN ACTUALLY CAUSE AIR
TO CONDENSE & LIQUEFY.THE NITROGEN IN THIS LIQ CAN EVAPORATE MORE
RAPIDLY,LEAVING AN OXY ENRICHED LIQ BEHIND.UTILIZE OXY-COMPATIBLE
INSULATING MAT ERIALS & MINIMIZE EXPOSED PIPING SURFACE

Exposure Controls

Respiratory Protection:OXYGEN-DEFICIENT ATMOSPHERES ARE IN THE
FLAMMABLE RANGE.DO NOT ENTER.
Ventilation:NATURAL/MECHANICAL WHERE GAS OR VAPOR PRESENT.
Protective Gloves:LOOSE FITTING IMPERMEABLE
Eye Protection:SAFETY GLASSES/GOGGLES
Other Protective Equipment:NONE
Supplemental Safety and Health
VENTILATION:MECHANICAL VENTILATION MUST MEET NATIONAL ELECTRIC CODE
(NEC) REQUIREMENTS FOR CLASS I, GROUP B.

Chemical Properties

Boiling Pt:B.P. Text:-4233.0F
Vapor Pres:NA
Vapor Density:@68F 20C
Spec Gravity:@68F 20C
Solubility in Water:@68F 20C
Appearance and Odor:BOTH LIQUID & GASEOUS HYDROGEN ARE COLORLESS &
ODORLESS.

Stability

Stability Indicator/Materials to Avoid:YES
OXIDIZING MATERIALS.SOME STEELS ARE SUSCEPTIBLE TO HYDROGEN ATTACK OR
EMBRITTLEMENT AT HIGH TEMPERATURE & PRESSURE.
Stability Condition to Avoid:SOURCES OF IGNITION,SPARKS,FLAMES,HOT
OBJECTS.
Hazardous Decomposition Products:NONE

Disposal

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE OF RESIDUAL GASEOUS
HYDROGEN IN CYLS.RETURN CYLS TO AIR PRODUCTS W/POSITIVE RESIDUAL
PRESSURE,CYLINDER VALVES TIGHTLY CLOSED& VALVE CAP IN PLACE.DO NOT
DISPOSE OF LIQ HYDROGE N-CONTACT AIR PRODUCTS FOR ASSISTANCE.

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.