Hydrogen Selenide
H2Se

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General Characteristics Health Hazards Material Recommendations
A colorless, flammable and liquefied with a penetrating odor. Highly Toxic. Attacks mucous membranes and eyes. Stainless steel and aluminum
TLV-TWA Flammable Limits DOT Class / Label
0.05 ppm Forms explosive mix in air 2.3 / Poisonous/Flammable Gas
Molecular Weight Specific Gravity Specific Volume
80.976 2.80 @ 70° F 4.8 cu.ft./lb @ 70° F
CGA Valve Outlet CAS Registry No. UN Number
350 7783-07-5 2202
National Stock Number (NSN) Applicable to Hydrogen Selenide MIL Specs/ Fed Specs
MSDS for Hydrogen Selenide

Grade
Part #		 Purity Minimum Cylinder
Size		 Volume
Lbs.		 Pressure
@ 70 F		 Comments
Electronic
480000 		99.999% Min.
Liquid Phase		 002
 0.50
 125

None
Ultra High Pure
470800 		99.99% Min.
Liquid Phase		 002
 0.50
 125

None
Uses: Hydrogen Selenide - H2Se - is used to prepare metallic selenides and organoselenium compounds. It is also used in doping gas mixtures for the preparation of semiconductor materials containing a controlled amount of significant impurity.