Product ID:HYDROGEN, REFRIGFRATED
MSDS Date:07/01/1987
FSC:6830
NIIN:00-264-6748
MSDS Number: BHDFG

Emergency Phone: 201-464-8100

Info Phone: 201-464-8100

Cage: AIRCO

Telephone: 800-424-9300(CHEMTREC)

Cage: 00741

HYDROGEN

CAS: 1333-74-0

RTECS: MW8900000

Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:FROSTBITE EFFECTS ARE A CHANGE IN
COLOR OF THE SKIN TO GRAY OR WHITE POSSIBLY FOLLOWED BY
BLISTERING.
Explanation of Carcinogenicity:HYDROGEN IS INACTIVE BIOLOGICALLY AND
ESSENTIALLY NONTOXIC
Effects of Overexposure:INHALATION:HIGH CONCENTRATION THAT EXCLUDE
ADEQUATE SUPPLY OF OXYGEN FROM THE LUNGS CAUSES DIZZINESS, DEEPER
BREATHING DUE TO AIR HUNGER, POSSIBLE NAUSEA & EVENTUAL
UNCONSCIOUNESS. CRYOGENIC LIQUI D CAN CAUSE TISSUE FREEZING OR
FROSTBITEON DERMAL CONTACT OR IF SPLASHED IN EYES.

First Aid:PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES.RESCUE
PERSNL SHOULD BE EQUIPW/S.C.B.A. & BE COGNIZANT OF EXTRM FIRE &
EXPLOSION HAZARD. INHAL: QUICK REMOVALFROM CONTAMINATED AREA IS
MOST IMPORTANT . UNCONSCIOUS PERSON SHOULD BE GIVENMOUTH TO MOUTH
RESUSCITATION. FOR DERMAL CONTACT/FROSTBITE, FLUSH AREA
W/LUKEWRMWATER. DO NOT USE HOT WATER!!! EYE:FLUSH IMMEDIATELY
W/TEPID WTR OR SALINE SOLUT

Flash Point:FLAMMABLE GAS
Autoignition Temp:Autoignition Temp Text:***
Lower Limits:4% BY VOL.
Upper Limits:74.5% B/VOL
Extinguishing Media:WATER, CARBON DIOXIDE, DRY CHEMICAL
Fire Fighting Procedures:STOP FLOW OF HYDROGEN IF POSSIBLE. COOL
SURROUNDING CONTAINERS W/WATER SPRAY. HYDROGEN BURNS W/ALMOST
INVISIBLE FLAME RELATIVELY LOW THERMAL RADIATION.
Unusual Fire/Explosion Hazard:SHOULD HYDROGEN FIRE BE EXTINGUISHED &
FLOW OF GAS CONTINUE, INCREASE VENTILATN TO PREVENT EXPLOSION
HAZARD,PARTICULARY IN UPPER PORTIONS OF BUILDINGS/SHEDS.

Spill Release Procedures:EVACUATE ALL PERSONNEL FROM AFFECTED AREA. USE
APPROPRIATE PROTECTIVE EQUIPMENT. DO NOT ATTEMPT TO REPAIR,
ADJUST, OR MODIFY OPERATION OF VESSELS.NO SMOKING OR OPEN FLAMES
ALLOWED NEAR THESE VESSELS.

Handling and Storage Precautions:CYLINDERS MUST ALWAYS BE KEPT UPRIGHT.
SPECIALIZEDTRUCKS ARE NEEDED FOR MOVEMENT.FULL/EMPTY CYLINDERSHOULD
BE STORED AWAY FROM FLAMMABLE/OXIDIZING MAT
Other Precautions:IF MALFUNCTIONS OR OTHER TYPE OF OPERATIONAL PROBLEM
OCCURS CONTACT CLOSEST AIRCO/BOC LOCATION IMMEDIATELY.

Respiratory Protection:POSITIVE PRESSURE AIR LINE W/FULL FACEPIECE &
ESCAPE AIR SUPPLY OR A SELF CONTAINED BREATHING APPARATUS
SHOULD BE AVAILABLE FOR EMERGENCY USE.
Ventilation:HOOD W/FORCED VENTILATION; LOCAL EXHAUST TO PREVENT
ACCUMULATION ABOVE THE LEL.
Protective Gloves:LOOSE FITTING INSULATED
Eye Protection:SAFETY GOGGLES/GLASSES PLUS FACESHIELD
Other Protective Equipment:SAFETY SHOES, SAFETY SHOWER
Supplemental Safety and Health
NK

Boiling Pt:B.P. Text:*SEE BELOW
Vapor Pres:*SEE BELOW
Vapor Density:4.43LB/FT3
Spec Gravity:1 ATM = 0.071
Solubility in Water:VERY SLIGHTLY
Appearance and Odor:COLORLESS, ODORLESS, CLEAR LIQUID

Stability Indicator/Materials to Avoid:YES
OXIDIZERS
Stability Condition to Avoid:**BOILING POINT: -423F/-252.4C
**VAPOR PRESSURE: -399.8F/ -239.9C
Hazardous Decomposition Products:NONE
Conditions to Avoid Polymerization:PRESENCE OF OXIDIZERS

Waste Disposal Methods:DO NOT ATTEMPT TO DISPOSE OF RESIDUAL OR UNUSED
QUANTITIES. RETURN TO AIRCO FOR PROPER DISPOSAL.

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.