Product ID:HYDROGEN
MSDS Date:Mar 07 1990
MSDS Number: EEEHU
Kit Part:=== Responsible Party ===
Company Name:MATHESON TRI-GAS, INC.
Address:959 ROUTE 46 EAST
City:PARSIPPANY
State:NJ
ZIP:07054-0624
Country:US
Info Phone Num:(USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)
780-471-4036
Chemtrec Ind/Phone:18004249300

Telephone: (USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)

HYDROGEN

CAS: 1333-74-0

Fraction By Weight: 100.0%

Reports of Carcinogenicity:NTP:No IARC:No OSHA:No
Health Hazards Acute and Chronic:INHALATION: SHORT TERM EXPOSURE:
nausea, vomiting, dizziness, tingling sensation, suffocation,
convulsions, coma LONG TERM EXPOSURE: no information on significant
adverse effects SKIN CONTACT: SHORT TERM EXPOSURE: no information
on significant adverse effects LONG TERM EXPOSURE: no information
is available EYE CONTACT: SHORT TERM EXPOSURE: no information on
significant adverse effects LONG TERM EXPOSURE: no information is
available INGESTION: SHORT TERM EXPOSURE: ingestion of a gas is
unlikely LONG TERM EXPOSURE: no information is available
Medical Cond Aggravated by Exposure:

First Aid: INHALATION: If adverse effects occur, remove to
uncontaminated area. Give artificial respiration if not breathing.
If breathing is difficult, oxygen should be administered by
qualified personnel. Get immediate medical attention. SKIN CONTACT:
Wash exposed skin with soap and water. EYE CONTACT: Flush eyes with
plenty of water. INGESTION: If a large amount is swallowed, get
medical attention. NOTE TO PHYSICIAN: For inhalation, consider
oxygen.

Autoignition Temp:932 F (500 C)
Lower Limits:4.0%
Upper Limits:75%
Extinguishing Media:carbon dioxide, regular dry chemical Large fires:
Flood with fine water spray.
Fire Fighting Procedures:Move container from fire area if it can be
done without risk. Cool containers with water spray until well
after the fire is out. Stay away from the ends of tanks. For fires
in cargo or storage area: Cool containers with water from unmanned
hose holder or monitor nozzles until well after fire is out. If
this is impossible then take the following precautions: Keep
unnecessary people away, isolate hazard area and deny entry. Let
the fire burn. Withdraw immediately in case of rising sound from
venting safety device or any discoloration of tanks due to fire.
For tank, rail car or tank truck: Stop leak if possible without
personal risk. Let burn unless leak can be stopped immediately. For
smaller tanks or cylinders, extinguish and isolate from other
flammables. Evacuation radius: 800 meters (1/2 mile). Do not
attempt to extinguish fire unless flow of material can be stopped
first. Flood with fine water spray. Cool containers with water
spray until well after the fire i out. Apply water from a protected
location or from a safe distance. Avoid inhalation of material or
combustion by-products. Stay upwind and keep out of low areas.
Evacuate if fire gets out of control or containers are directly
exposed to fire. Evacuation radius: 500 meters (1/3 mile). Consider
downwind evacuation if material is leaking. Stop flow of gas.
Unusual Fire/Explosion Hazard:Severe fire hazard. Severe explosion
hazard. Vapor/air mixtures are explosive. Pressurized containers
may rupture or explode if exposed to sufficient heat. Electrostatic
discharges may be generated by flow or agitation resulting in
ignition or explosion.

Spill Release Procedures:Avoid heat, flames, sparks and other sources
of ignition. Do not touch spilled material. Stop leak if possible
without personal risk. Reduce vapors with water spray. Keep
unnecessary people away, isolate hazard area and deny entry. Remove
sources of ignition. Ventilate closed spaces before entering.
Neutralizing Agent:

Handling and Storage Precautions:Store and handle in accordance with
all current regulations and standards. Grounding and bonding
required. Subject to storage regulations: U.S. OSHA 29 CFR
1910.101. Keep separated from incompatible substances.
Other Precautions:

Respiratory Protection:Under conditions of frequent use or heavy
exposure, respiratory protection may be needed. Respiratory
protection is ranked in order from minimum to maximum. Consider
warning properties before use. For Unknown Concentrations or
Immediately Dangerous to Life or Health - Any supplied-air
respirator with full facepiece and operated in a pressure-demand or
other positive-pressure mode in combination with a separate escape
supply. Any self-contained breathing apparatus with a full
facepiece.
Ventilation:Ventilation equipment should be explosion-resistant if
explosive concentrations of material are present. Provide local
exhaust ventilation system. Ensure compliance with applicable
exposure limits.
Protective Gloves:Wear appropriate chemical resistant gloves.
Eye Protection:Eye protection not required, but recommended.
Other Protective Equipment:Protective clothing is not required.
Supplemental Safety and Health
HYDROGEN: ACGIH (simple asphyxiant)

Boiling Pt:-423 F (-253 C)
Melt/Freeze Pt:-434 F (-259 C)
Vapor Pres:760 mmHg @ -253 C
Vapor Density:0.07
Spec Gravity:Not applicable
pH:Not applicable
Evaporation Rate & Reference:Not applicable
Solubility in Water:1.82% @ 20 C
Appearance and Odor:PHYSICAL STATE:gas COLOR:colorless ODOR:odorless
Corrosion Rate:

Stability Indicator/Materials to Avoid:Stable at normal temperatures
and pressure.
Stability Condition to Avoid:Avoid heat, flames, sparks and other
sources of ignition. Minimize contact with material. Containers may
rupture or explode if exposed to heat.
Hazardous Decomposition Products:Thermal decomposition products:
miscellaneous decomposition products Thermal decomposition
products: miscellaneous decomposition products
Conditions to Avoid Polymerization:Will not polymerize.

Waste Disposal Methods:Dispose in accordance with all applicable
regulations. Subject to disposal regulations: U.S. EPA 40 CFR 262.
Hazardous Waste Number(s): D001.

Toxicological Information:Not available

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.

Ecological:Not available

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Hydrogen, compressed ID NUMBER: UN1049 HAZARD CLASS OR DIVISION:
2.1 LABELING REQUIREMENTS: Flammable gas QUANTITY LIMITATIONS:
PASSENGER AIRCRAFT OR RAILCAR: Forbidden CARGO AIRCRAFT ONLY: 150
kg

SARA Title III Information: SARA TITLE III SECTION 302 EXTREMELY
HAZARDOUS SUBSTANCES (40 CFR 355.30): Not regulated. SARA TITLE
III SECTION 304 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355.40): Not
regulated. SARA TITLE III SARA SECTIONS 311/312 HAZARDOUS
CATEGORIES (40 CFR 370.21): ACUTE: Yes CHRONIC: No FIRE: Yes
REACTIVE: No SUDDEN RELEASE: Yes SARA TITLE III SECTION 313 (40
CFR 372.65): Not regulated.
Federal Regulatory Information:CERCLA SECTIONS 102a/103 HAZARDOUS
SUBSTANCES (40 CFR 302.4): Not regulated. OSHA PROCESS SAFETY
(29CFR1910.119): Not regulated.
State Regulatory Information: California Proposition 65: Not regulated.