CR3756 Chromium(III) Phosphate Hydrate Powder (CAS No. 84359-31-9)

Catalog No. CR3756
CAS Number 84359-31-9
Molecular Formula CrPO4 • xH2O
Molecular Weight 164.98 (monohydrate)
Appearance Blue to purple powder
Purity 99%

SAM provides a series of chromium compounds of good quality. With our rich experience and knowledge in the chromium series, you can be confident in making SAM your first choice. We offer high-purity Chromium(III) Phosphate Hydrate Powder according to your requirements.


Related products: Chromium Oxide (Cr2O3), Chromium Carbide Powder, Chromium Diboride Powder

Chromium(III) Phosphate Hydrate Powder Description:

Chromium(III) Phosphate Hydrate describes inorganic compounds with the chemical formula CrPO4.(H2O)n. The appearance is blue to purple powder.

Chromium(III) Phosphate Hydrate Powder Specifications:

Properties (Theoretical)

Compound Formula

CrPO4 • xH2O

Molecular Weight

164.98 (monohydrate)


Blue to purple powder

Melting Point



2.12 g/cm3


Insoluble, exothermal blue solution.

Chromium(III) Phosphate Hydrate Powder Safety Information:

Safety Information according to GHS

Signal Word


Hazard Statements


Hazard Codes


Precautionary Statements


Flash Point


Risk Codes


Safety Statements


RTECS Number


Transport Information

UN 3260 8/PG II

WGK Germany


GHS Pictograms

Chromium(III) Phosphate Hydrate Powder Applications:

-Anti-corrosive Coating

Paints containing chromium(III) phosphate have been used as corrosion resistant coating for metals. The paints consist of aqueous acidic chromium (III) phosphate solution which convert to a consistent film when applied onto metals heavily used in manufacturing and utility such as zinc, zinc alloy, aluminum and aluminum alloy substrates. Application methods include electroplating, immersing or spraying the solution on the surface of the substrate.



Chromium (III) phosphate has various applications in the polymer industry. Combined chromium(III) aluminum phosphate is widely used as a catalyst in the alkylation of aromatic hydrocarbons using alcohols such as the methylation of toluene using methanol. The alcohol is dehydrated into ether while the alkyl substituted product could be used as an intermediate in the manufacture of synthetic fibers such as poly(ethylene terephthalate).



Pretreatment with chromium (III) phosphate-silicate is also used as a laminated structure to dampen vibration and noise in a motor.


Chromium(III) Phosphate Hydrate Powder Packaging:

Our Chromium(III) Phosphate Hydrate Powder is stored in a cool, ventilated warehouse and will be kept sealed. It will be carefully handled during storage and transportation to preserve the quality of our product in its original condition. It will be packed in vacuum packing in carton or iron drum.



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