Magnesium Hypophosphite

Magnesium Hypophosphite
Magnesium Hypophosphite
Are common
Systematic ; name	Magnesium Hypophosphite
Traditional names	magnesium phosphate; magnesium phosphinate
Chem. formula	Mg (PH 2 O 2 ) 2
Physical properties
condition	colorless crystals
Molar mass	154.28 g / mol
Density	hydrate - 1.59 g / cm³
Thermal properties
T. decomp.	345 ° C
Chemical properties
Solubility in water	20 20 g / 100 ml
Classification
Reg. CAS number	10377-57-8, 7783-17-7
PubChem
Reg. EINECS number	233-824-6
Smiles
Inchi

Magnesium hypophosphite is an inorganic compound, a salt of magnesium and hypophosphorous acid with the formula Mg (PH ₂ O ₂ ) ₂ , colorless crystals, it dissolves in water, forms crystalline hydrates .

Content

Getting

Dissolution of magnesium oxide in hypophosphorous acid:

{\mathsf {MgO+H_{3}PO_{2}\ {\xrightarrow {}}\ Mg(PH_{2}O_{2})_{2}+H_{2}O}}

{\ displaystyle {\ mathsf {MgO + H_ {3} PO_ {2} \ {\ xrightarrow {}} \ Mg (PH_ {2} O_ {2}) _ {2} + H_ {2} O}}}

Physical Properties

Magnesium hypophosphite forms colorless crystals

It is soluble in water, insoluble in ethanol and diethyl ether .

Forms a crystalline hydrate of the composition Mg (PH ₂ O ₂ ) ₂ • 6H ₂ O - colorless crystals of two modifications:

cubic syngony , space group P 4 3m , cell parameters a = 1.031 nm, Z = 4;
tetragonal syngony , space group P 4 ₂ nmc , cell parameters a = 0.72187 nm, c = 1.04639 nm, Z = 2.

Chemical Properties

When heated, crystalline hydrate gradually loses water:

{\mathsf {Mg(PH_{2}O_{2})_{2}\cdot 6H_{2}O\ {\xrightarrow[{-H_{2}O}]{101^{o}C}}\ Mg(PH_{2}O_{2})_{2}\cdot H_{2}O\ {\xrightarrow[{-H_{2}O}]{182^{o}C}}\ Mg(PH_{2}O_{2})_{2}}}

{\ displaystyle {\ mathsf {Mg (PH_ {2} O_ {2}) _ {2} \ cdot 6H_ {2} O \ {\ xrightarrow [{- H_ {2} O}] {101 ^ {o} C }} \ Mg (PH_ {2} O_ {2}) _ {2} \ cdot H_ {2} O \ {\ xrightarrow [{- H_ {2} O}] {182 ^ {o} C}} \ Mg (PH_ {2} O_ {2}) _ {2}}}}

Decomposes on heating:

{\mathsf {Mg(PH_{2}O_{2})_{2}\ {\xrightarrow {345^{o}C}}\ MgHPO_{4}+PH_{3}}}

{\ displaystyle {\ mathsf {Mg (PH_ {2} O_ {2}) _ {2} \ {\ xrightarrow {345 ^ {o} C}} \ MgHPO_ {4} + PH_ {3}}}}

Application

Stabilizer for halogen-containing polymers .

Literature

Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 2nd ed., rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Richard C. Ropp ,. Encyclopedia of the Alkaline Earth Compounds . - Elsevier, 2013 .-- ISBN 978-0-444-59550-8 .

Magnesium Hypophosphite
Are common
Systematic name	Magnesium Hypophosphite
Traditional names	magnesium phosphate; magnesium phosphinate
Chem. formula	Mg (PH ₂ O ₂ ) ₂
Physical properties
condition	colorless crystals
Molar mass	154.28 g / mol
Density	hydrate - 1.59 g / cm³
Thermal properties
T. decomp.	345 ° C
Chemical properties
Solubility in water	20 ²⁰ g / 100 ml
Classification
Reg. CAS number	10377-57-8, 7783-17-7
PubChem
Reg. EINECS number	233-824-6
Smiles
Inchi