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| Products Intro: |
Product Name:CALCIUM PHOSPHITE
CAS:21056-98-4
Purity:99% HPLC Package:25KG;200KG;5KG;1KG;1T Remarks:21056-98-4
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| | CALCIUM PHOSPHITE Basic information |
| Product Name: | CALCIUM PHOSPHITE | | Synonyms: | calcium hydrogen phosphonate;Phosphonic acid calcium salt;CALCIUM PHOSPHITE;CALCIUM PHOSPHITE MONOHYDRATE;Phosphonic acid, calcium salt (1:1) | | CAS: | 21056-98-4 | | MF: | CaHO3P | | MW: | 120.06 | | EINECS: | 244-182-1 | | Product Categories: | | | Mol File: | 21056-98-4.mol |  |
| | CALCIUM PHOSPHITE Chemical Properties |
| | CALCIUM PHOSPHITE Usage And Synthesis |
| Description | Calcium phosphite can have the molecular formula of
CaHPO3 or Ca(H2PO3)2. It is the former that appears
when a solution of phosphorous acid is reacted with
the oxide, hydroxide or carbonate:
CaO +H3PO3 ? CaHPO3·H2O +H2O
The product is a monohydrate. It can also be prepared
by the action of ammonium phosphite on calcium
chloride:
CaCl2 (aq) +NH4HPO3 (aq)
? CaHPO3·H2O +NH4Cl2 (aq)
A white, crystalline powder is obtained. The solubility
of CaHPO3·H2O has apparently not been determined
exactly. If heated to about 250°C, the anhydrate
results. This is stable when heated further up to about
320°C where it decomposes to form phosphine and
hydrogen:
3CaHPO3 + heat ? 2PH3 + 3Ca(PO3)2 +H2 | | Chemical Properties | crystal(s); used in fertilizers and polymerization catalysts [MER06] | | Physical properties | Calcium Phosphite is a colorless,
monoclinic crystal which loses water at about 150°C
and is slightly soluble in water but insoluble in alcohol.
The anhydrate, calcium phosphite (CaHPO3), is stable in
air even when heated at 95°C for 2 months. | | Flammability and Explosibility | Not classified |
| | CALCIUM PHOSPHITE Preparation Products And Raw materials |
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