Solid phase
Official name
Cobalt(II) phosphate
Secondary names
cobalt(2+);diphosphate; Cobaltous phosphate; Phosphoric acid, cobalt(2+) salt (2:3); Tricobalt bis(orthophosphate)
CAS number
13455-36-2
Type
Family
ionic solid
Class
normal salt
Compound type
phosphate
Chemical composition
Formula
$(Co^{2+})_3 \cdot (PO_4^{3-})_2$
Chemical formula
Co3(PO4)2
Elemental formula
(Co2+)3 P2 O2 (O-)6
Isotope mixture type
terrestrial abundance
10.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Co^{2+}$ Cobaltous cation element 3 0.6 1 constituent cation main
$(PO_4)^{3-}$ Phosphate anion chemical function 2 0.4 1 anionic radical main
Chemical functions
  Function Number
$(PO_4)^{3-}$ 2
Chemical bonds
  Bond Number
$\cdot Co^{2+} \cdot O^{-}-$ 3
$\dddot - \dddot - \dddot - P \dddot - O^{-3/4}$ 4
Class
normal salts (07)
Type
simple normal salts (07.01)
Phase type
crystalline
Molar mass
366.742 $g/mol$
Density
3.81 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid 1430K (1160 °C)
Refraction index $n_{\alpha}$
1.7
Pure color
violet
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