Zirconium hydride

  • Zirconium dihydride
Formula
ZrH2
Structure
Description
A grayish black solid.
Uses
Powerful reducing agent in acid solution or at high temps.

Registry Numbers and Inventories.
CAS
7704-99-6
EC (EINECS/ELINCS)
231-727-3
RTECS
ZH8015000
RTECS class
Other
UN (DOT)
1437
Beilstein/Gmelin
111360 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
H2Zr
Formula mass
93.23
Decomposition point, °C
860
Vapor density (air=1)
5.6
Density
5.6 g/cm3 (20 C)
Solubility in water
Insoluble

Hazards and Protection.
Storage
Store in a tightly sealed container, away from heat, flames, oxidants, acids and steam.
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.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Do not use water. Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Keep material dry.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Incompatible with acids, alcohols, amines, and aldehydes.

Fire.
Fire fighting
Do not use water. Use graphite, soda ash or powdered sodium chloride.
Fire potential
Produce flammable gases on contact with water.
Hazards
Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.

Health.
Exposure limit(s)
OSHA PEL: 5 MG ZR/M3 ACGIH TLV: 5 MG ZR/M3
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Inhalation or contact with vapors, substance, or decomposition products may cause severe injury or death.
   Skin
See inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, wipe from skin immediately. Flush with running water for at least 20 minutes.
   Eyes
Flush with running water for at least 20 minutes.

Transport.
UN number
1437
Response guide
Hazard class
4.1
Packing Group
II
 
Std. Transport #
4917511