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Properties of substance:

calcium phosphinate

Synonyms:

calcium hypophosphite

Group of substances:

inorganic

Physical appearance:

monoclinic crystals

Empirical formula (Hill's system for organic substances):

H4CaO4P2

Structural formula as text:

Ca(H2PO2)2

Molar/atomic mass: 170.055

Decomposition temperature (°C):

200

Solubility (g/100 g of solvent):

ethanol: insoluble [Ref.]
glycerol 99.04%: 2.5 (20°C) [Ref.]
water: 15.4 (25°C) [Ref.]
water: 12.5 (100°C) [Ref.]

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-1755 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-55
  2. Романова Н.В., Демиденко Н.В. Фосфорноватистая кислота и ее соли / Успехи химии. - 1975. - Т.44, №12. - pp. 2159-2160 [Russian]
  3. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 236 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru