Nomenclature
CAS number: 7789-04-0
CrO
4P; mol wt 146.97.
Cr 35.38%, O 43.54%, P 21.07%.
CrPO
4.
Description and references
Prepn: Ness et al., J. Am. Chem. Soc. 74, 4685 (1952);
Eickhoff, Kebrich, US 2749214 (1956 to National Lead); Wegenknecht, DE 1046597 (1958); DE 1056104 (1959).
Properties
Gray-brown to black crystals of amorphous solid.
Does not melt by 1800°. d32.5 2.94. Partially oxidizes to CrO3 on heating in air. Practically insol in water, acetic acid, HCl,
aqua regia.Derivative
Hemiheptahydrate.
Nomenclature
Arnaudon's green; Plessy's green. Properties
Blue-green powder. d 2.15. Practically insol in water. Sol in
acids.Derivative
Hexahydrate.
Properties
Violet crystals. Loses water gradually on heating,
becoming anhydr after one hour at 800° or 3-4 hrs at 500°. d14 2.121.
Practically insol in water. Slightly sol in acetic acid solns; readily
sol in mineral acids, alkalis, oxalic acid solns.Derivative
Radioactive Form.
Nomenclature
CAS number: 24381-60-0
Phosphocol (Mallinckrodt).
Cr32PO4.
Use
Green pigment; in wash primers; in catalysts for
dehydrogenation of hydrocarbons or polymerization of olefins.
Therapeutic Category
Radioactive form as antineoplastic (radioactive agent).
Keywords
Chromic Phosphate 32P: Antineoplastic (Radiation Source)