MAGNESIUM PHOSPHITE

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MAGNESIUM PHOSPHITE Basic information
Product Name:MAGNESIUM PHOSPHITE
Synonyms:MAGNESIUM PHOSPHITE
CAS:
MF:Mg3O6P2
MW:230.86
EINECS:
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Mol File:Mol File
MAGNESIUM PHOSPHITE Structure
MAGNESIUM PHOSPHITE Chemical Properties
Safety Information
MSDS Information
MAGNESIUM PHOSPHITE Usage And Synthesis
DescriptionMagnesium 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 propertiesThe 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
Tag:MAGNESIUM PHOSPHITE Related Product Information
CALCIUM PHOSPHIDE Magnesium phosphide strontium phosphide beryllium phosphide Strontium Hypophosphite Radium Hypophosphite Beryllium Hypophosphite BARIUM PHOSPHIDE Radium Phosphite Strontium Phosphite BARIUM PHOSPHITE Radium Phosphide CALCIUM PHOSPHITE BARIUM HYPOPHOSPHITE Beryllium Phosphite Calcium hypophosphite Magnesium hypophosphite