TUNGSTEN (IV) OXIDE

CAS No.：12036-22-5

Other grades of this product :

TUNGSTEN (IV) OXIDE Basic information

Product Name:	TUNGSTEN (IV) OXIDE
Synonyms:	Tungsten(IV) oxide, 99.9% (metals basis);Wolfram(IV)dioxide;Tungsten(IV) oxide -100 mesh, 99.99% trace metals basis;Tungsten(IV) oxide, 99.9% trace metals basis;Tungsten oxide (WO2);WO2;TUNGSTEN DIOXIDE;TUNGSTEN OXIDE
CAS:	12036-22-5
MF:	O2W
MW:	215.84
EINECS:	234-842-7
Product Categories:	metal oxide;TungstenMetal and Ceramic Science;Catalysis and Inorganic Chemistry;Chemical Synthesis;Oxides;Tungsten
Mol File:	12036-22-5.mol

TUNGSTEN (IV) OXIDE Chemical Properties

Melting point	1500-1600°C
Boiling point	1730℃[at 101 325 Pa]
density	12,11 g/cm³
form	Powder
Specific Gravity	12.11
color	brown
Water Solubility	Soluble in acid and potassium hydroxide. Insoluble in water.
Exposure limits	ACGIH: TWA 3 mg/m3NIOSH: TWA 5 mg/m3; STEL 10 mg/m3
CAS DataBase Reference	12036-22-5(CAS DataBase Reference)
EPA Substance Registry System	Tungsten oxide (WO2) (12036-22-5)

Safety Information

Hazard Codes	Xi
Risk Statements	37
Safety Statements	26-36
WGK Germany	3
TSCA	Yes

MSDS Information

Provider	Language
SigmaAldrich	English
ALFA	English

TUNGSTEN (IV) OXIDE Usage And Synthesis

Chemical Properties	brown powder(s), may become purple on standing; formed when WO3 is reduced by H2 at 575°C–600°C [KIR83] [STR93]
Uses	Tungsten(IV) oxide is used in the production of tungsten and tungstates, in alloys, in fire-proofing fabrics and as a ceramic pigment. It is used to study their chromism, photocatalysis and sensing capabilities. It is associated with rhenium trioxide particles and used for detection of protonatable, radical and precharged species under laser desorption ionization.
Flammability and Explosibility	Nonflammable

TUNGSTEN (IV) OXIDE Preparation Products And Raw materials

Important Notice

This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
This product is intended solely for non-clinical research, process development, quality studies, further chemical processing, or chemical synthesis. It must not be used in drug-product manufacturing, clinical trials, clinical diagnosis, or administration to humans or animals, or be sold, used as an input, submitted for regulatory filing, or released as an API or pharmaceutical material.
The purchaser must not use this product, or supply it to another party, for personal consumption, sports or fitness, weight loss, health supplements, food, or animal feed.

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