MAGNESIUM PHOSPHITE
- CAS No.
- Chemical Name:
- MAGNESIUM PHOSPHITE
- Synonyms
- MAGNESIUM PHOSPHITE
- CBNumber:
- CB8398440
- Molecular Formula:
- Mg3O6P2
- Molecular Weight:
- 230.86
- MDL Number:
- MFCD07783315
- MOL File:
- Mol file
MAGNESIUM PHOSPHITE Chemical Properties,Uses,Production
Description
Magnesium phosphite can have the molecular
formula of the hydrogen phosphite, MgHPO3 or the
dihydrogen phosphite, Mg(H2PO3)2. It is the former
that appears when a solution of phosphorous acid is
reacted with the oxide, hydroxide or carbonate:
MgO +H3PO3 MgHPO3 +H2O
The product is a hexahydrate. It can also be prepared
by the action of ammonium phosphite on magnesium
chloride:
MgCl2 (aq) +NH4HPO3 (aq) MgHPO3·6H2O
+NH4Cl2 (aq)
If a sodium phosphite is used in the preparation, then
the dihydrogen phosphite, Mg(H2PO3)2, is produced.
Physical properties
The nature of the hydrates of these hydrogenphosphite salts is controlled, to some extent, by the solution temperature employed. The hexahydrate, MgHPO3·6H2O, is obtained at room temperature (15–25°C). At 30–50°C, the tri-hydrate occurs whereas at >85°C, the monohydrate is most stable. This is due in part to the solubilities of these three salts. The hexahydrate is rather soluble at 16.4 g/100 ml of water (20°C) whereas the trihydrate is most stable at 50°C. It has been shown that at reaction temperatures less than about 60°C a crystalline magnesium hydrogen phosphite trihydrate, MgHPO3·3H2O, whose solubility increased from 8.9 at 20°C to 11.2 g/100 ml at 50°C and then to 6.5 at 95°C temperature.
MAGNESIUM PHOSPHITE Preparation Products And Raw materials
Raw materials
Preparation Products
MAGNESIUM PHOSPHITE Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| City Chemical LLC | -- | sales@citychemical.com | United States | 6708 | 72 |
| City Chemicals Corporation | -- | United States | 6460 | 72 |
| Supplier | Advantage |
|---|---|
| City Chemical LLC | 72 |
| City Chemicals Corporation | 72 |
