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Properties of substance:

pentacalcium hydroxide triphosphate

Synonyms:

hydroxyapatite

Group of substances:

inorganic

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

HCa5O13P3

Structural formula as text:

Ca5(PO4)3(OH)

Molar/atomic mass: 502.31

Melting point (°C):

1400

Decomposition temperature (°C):

1400

Solubility (g/100 g of solvent):

water: 0.0003 (25°C) [Ref.]

Dissociation:

pKsp (0) = 57.5 (25°C, water)

References:

  1. Войткевич Г.В., Кокин А.В., Мирошников А.Е., Прохоров В.Г. Справочник по геохимии. - М.: Недра, 1990. - pp. 48 [Russian]
  2. Новый справочник химика и технолога. Химическое равновесие. Свойства растворов. - СПб.: НПО Профессионал, 2004, 2007. - pp. 295 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru