Calcium tungstate Chemical Properties

Melting point:

1620°C

Density 

6.06 g/mL at 25 °C (lit.)

storage temp. 

-20°C

solubility 

Insoluble in H{2}O. Decomposes by hot HCl, HNO{3}

form 

Powder

color 

white

Specific Gravity

6.062

Water Solubility 

insoluble H2O; decomposed by hot HCl, HNO3 [MER06]

Merck 

14,1712

Solubility Product Constant (Ksp)

pKsp: 8.06

Exposure limits

ACGIH: TWA 3 mg/m3
NIOSH: TWA 5 mg/m3; STEL 10 mg/m3

CAS DataBase Reference

7790-75-2(CAS DataBase Reference)

EPA Substance Registry System

Calcium tungsten oxide (CaWO4) (7790-75-2)

Safety Information

WGK Germany 

3

TSCA 

Yes

HS Code 

28418030

MSDS

• Language:English Provider:Calcium tetraoxotungstate
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

Calcium tungstate Usage And Synthesis

Chemical Properties

-325 mesh, 10μm or less 99.9% pure; occurs in nature as mineral scheelite; white tetr powder(s), a=0.524 nm, c=1.138 nm; can be prepared by heating tungstic acid and CaO or CaCO3; used in tumor treatment and in luminous paint [KIR83] [STR93] [MER06]

Uses

Calcium tungsten oxide is used as a luminophore.

Uses

Calcium tungstate can be ued for preparing screens for x-ray observations and photographs; in luminous paints; in scintillation counters.

General Description

Calcium tungstate (CaWO₄) is an optical material, which can be used as a laser host material for a variety of electronic applications. It has a scheelite structure with luminescence, and thermo-luminescence properties.

Flammability and Explosibility

Notclassified

Calcium tungstate(7790-75-2)Related Product Information

• Tungstic acid
• POTASSIUM TUNGSTATE
• LITHIUM TUNGSTATE
• BARIUM TUNGSTATE
• MAGNESIUM TUNGSTATE
• STRONTIUM TUNGSTATE
• AMMONIUM TUNGSTATE 99.99%
• Sodium tungstate
• BISMUTH TUNGSTATE
• Zirconium tungstate
• ZINC TUNGSTATE
• Sodium tungstate dihydrate
• CALCIUM TUNGSTATE, 99.9%
• Lead(Ⅱ) tungstate
• Phosphotungstic acid 44-hydrate
• TUNGSTEN (IV) OXIDE
• CALCIUM ION CHROMATOGRAPHY STANDARD
• TUNGSTIC ACID