Calcium silicide , Null , 12013-56-8
CAS NO.：12013-56-8
Empirical Formula: CaSi2
Molecular Weight: 96.25
MDL number: MFCD00015977
EINECS: 234-588-7
PRODUCT Properties
| Melting point: | 1020 °C |
| Density | 2,5 g/cm3 |
| solubility | insoluble in cold H2O; reacts with hotH2O; soluble in acid solutions |
| form | pieces |
| color | Gray |
| Specific Gravity | 2.5 |
| Water Solubility | Insoluble in cold water, decomposes in hot water |
| Hydrolytic Sensitivity | 2: reacts with aqueous acid |
| Sensitive | Moisture Sensitive |
Description and Uses
Calcium silicide has the molecular formula of Ca2Si and the molecular weight of 96.2514 g/mol. This salt can be formed by the reaction of Ca metal, mixed with Si, at 850°C in an inert atmosphere.
The uses of calcium silicide are many. Some of these
include:
? Calcium silicide is used for manufacture of special
metal alloys, e.g. for removing phosphorus and as
a deoxidizer.
? In pyrotechnics, it is used as fuel to make special
mixtures, e.g. for production of smokes, in flash
compositions, and in percussion caps.
? Calcium silicide is used in the manufacture of
certain initiatory, pyrotechnic and smoke
compositions.
? The silicon and calcium alloy is mainly used as
desulfurizing agent and deoxidizer for steel industry
and casting industry.
? Calcium silicide has been found to be extremely
corrosive to all metals including the refractory metals.
It has been successfully contained in boron nitride for
36 h.
? The formation of calcium silicide (CaSi2) intermetallic
through the simultaneous reduction of calcium oxide
from the electrolyte and of the silica pellet and
reduction of dissolved carbon dioxide.
C
