Germane

  • Germanium hydride
  • Germanium tetrahydride
Formula
Ge4
Structure
Description
Germane is a colorless gas with a pungent odor.

Registry Numbers and Inventories.
CAS
7782-65-2
EC (EINECS/ELINCS)
231-961-6
RTECS
LY4900000
RTECS class
Other
UN (DOT)
2192
Merck
12,4414
Beilstein/Gmelin
587 (G)
Swiss Giftliste 1
G-5482
Canada DSL/NDSL
DSL
US TSCA
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
GeH4
Formula mass
76.62
Melting point, °C
-164.8
Boiling point, °C
-88.5
Vapor pressure, mmHg
70.5 (-125 C)
Vapor density (air=1)
2.65
Density
1.523 g/cm3 (-142 C)
Solubility in water
Insoluble
Heat of fusion
0.84 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles -- as recommended by the manufacturer. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Stability
No data.
Incompatibilities
Incompatible with acids, alcohols, amines, and aldehydes.
Decomposition
The substance may spontaneously ignite on contact with air. Decomposes on heating above 350 C and on contact with oxidizers, such as nitric acid.

Fire.
Fire fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Solid streams of water may be ineffective. Use foam, dry chemical, or carbon dioxide.
Fire potential
Flammable; may be ignited by heat, sparks or flames. May form explosive mixtures with air.
Hazards
Flammable; may be ignited by heat, sparks or flames. May form explosive mixtures with air. May polymerize explosively when heated or involved in a fire. Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Some of these materials may react violently with water. Containers may explode when heated. Ruptured cylinders may rocket. Runoff may create fire or explosion hazard.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
4
 
Flammability
4
 
 
Reactivity
3
 
 
Special
W

Health.
Exposure limit(s)
NIOSH REL: TWA 0.2 ppm (0.6 mg/m3)
Poison_Class
1
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
May be toxic/fatal if inhaled. Contact may cause burns, severe injury and/or frostbite.
   Skin
May be toxic/fatal if absorbed through skin. Contact may cause burns, severe injury and/or frostbite.
   Eyes
Contact may cause burns, severe injury and/or frostbite.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. In case of contact with liquefied gas, thaw frosted parts with lukewarm water.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2192
Response guide
Hazard class
2.3
PRTC
T
Std. Transport #
4920354