Magnesium silicide

Formula
Mg2Si
Description
A colorless crystalline solid.
Uses
Substance is used in semiconductor research.

Registry Numbers and Inventories.
CAS
22831-39-6
EC (EINECS/ELINCS)
245-254-5
RTECS
OM4367000
UN (DOT)
2624
Merck
12,5728
Beilstein/Gmelin
173766 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
MgSi
Formula mass
76.69
Melting point, °C
1102
Density
1.94 g/cm3
Solubility in water
Decomposes

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.
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. Do not use water. Keep material dry. Cover all suspected material with dry sand or earth to prevent ignition until material can be permanently disposed of.
Stability
No data.
Incompatibilities
May react vigorously with oxidizing materials.

Fire.
Fire fighting
Do not use water. Use dry chemical, graphite, or dry earth. When fire is out, cover all suspected material with dry sand or earth to prevent re-ignition until material can be permanently disposed of.
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.
 
Special
W

Health.
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
2624
Response guide
Hazard class
4.3
Packing Group
II
 
Std. Transport #
4916406