Calcium Arsenide
- CAS No.
- 12255-53-7
- Chemical Name:
- Calcium Arsenide
- Synonyms
- CALCIUM ARSENIDE;tricalcium diarsenide
- CBNumber:
- CB8925341
- Molecular Formula:
- AsCaH2
- Molecular Weight:
- 117.02
- MDL Number:
- MFCD00799696
- MOL File:
- 12255-53-7.mol
| EPA Substance Registry System | Calcium arsenide (Ca3As2) (12255-53-7) |
|---|
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H315-H319 |
| Precautionary statements | P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313 |
Calcium Arsenide Chemical Properties,Uses,Production
Description
Calcium arsenide has the molecular formula of
Ca3As2 and the molecular weight of 270.0772 g/mol. It may be prepared by reacting the elements together.
Since As sublimes at 614°C and Ca melts at 839°C,
the latter is melted at about 875°C in an inert atmosphere
like argon (not N2 which would form nitrides)
and arsenic vapors are carried into the reaction zone
by a stream of Ar gas:
3Ca + 2As + heat ? Ca3As2
Its CAS number is 12255-53-7. The standard Gibbs
energies of formation of Ca3As2 was determined by
a chemical equilibration technique yielding the
following results:
3Ca + 2As ? Ca3As2 (solid)
△G°= -723,800 + 172.8T (J/mol)
(T = 1273 to 1573 K)
Calcium arsenide has the zinc-blende (cubic) structure
with a = 6.751 ? . It can also be prepared by the
reduction of calcium arsenate by carbon:
2Ca3AsO4 + 5C + heat ? Ca3As2 + 2CaO + 3CO2
Calcium Arsenide Preparation Products And Raw materials
Raw materials
Preparation Products
Calcium Arsenide Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Portail Substances Chimiques | -- | webmestre-substances@ineris.fr | France | 6027 | 58 |
| Supplier | Advantage |
|---|---|
| Portail Substances Chimiques | 58 |