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Merck

248665

Calcium tungstate

powder

Synonym(s):

Calcium tungsten tetraoxide

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About This Item

Linear Formula:
CaWO4
CAS Number:
Molecular Weight:
287.92
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352300
EC Number:
232-219-4
MDL number:

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InChI key

FDMFQOCGNBYKPY-UHFFFAOYSA-N

InChI

1S/Ca.4O.W/q+2;;;2*-1;

SMILES string

[Ca++].[O-][W]([O-])(=O)=O

form

powder

density

6.06 g/mL at 25 °C (lit.)

Quality Level

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form

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crystalline powder

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form

powder

density

6.06 g/mL at 25 °C (lit.)

density

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density

2.93 g/mL at 25 °C (lit.)

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Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

200

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.[1]

Application

CaWO4 can be used in the fabrication of a radio-sensitizer for cancer radiotherapy applications.[2] It can also be used as a catalyst for the oxidation of organic substrates with hydrogen peroxide.[3]

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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L J Skoczylas et al.
Oral surgery, oral medicine, and oral pathology, 68(6), 776-781 (1989-12-01)
The radiation dose to radiobiologically critical organs at various anatomic sites in a phantom was compared with the use of rare earth screen/film combinations and calcium tungstate screen/film combinations. Rare earth screens and films produced a reduction in dose up
Controlled synthesis of calcium tungstate hollow microspheres via ostwald ripening and their photoluminescence property
Wang W, et al.
The Journal of Physical Chemistry C, 112(49), 19390-19398 (2008)
Calcium tungstate: a convenient recoverable catalyst for hydrogen peroxide oxidation
Tressler CM, et al.
Green Chemistry, 18(18), 4875-4878 (2016)
Jaume Escoda-Francoli et al.
Journal of endodontics, 33(12), 1484-1489 (2007-11-27)
Damage to the inferior alveolar nerve is a relatively infrequent complication in dental practice. When root canal treatment of a lower molar or premolar surpasses and/or overextends beyond the apical foramen and invades the periapical zone, the foreign material introduced
A P Aguas et al.
The American journal of anatomy, 190(1), 89-96 (1991-01-01)
We have studied the subcellular distribution of ferritin in inflammatory macrophages present in regional lymph nodes from dogs subjected to a pulmonary inflammatory reaction. The inflammatory reaction was induced by intrabronchial instillation of calcium tungstate (CaWO4), a water-insoluble powder. Ferritin

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