Tungsten trioxide manufacturers and suppliers in india

Tungsten trioxide

Properties

Melting point:: 1470-1475 °C

Boiling point:: 1837°C (estimate)

Density: 7.16 g/mL at 25 °C(lit.)

storage temp.: Room Temperature

solubility: insoluble in H2O, organic solvents; slightly soluble in acid solutions; soluble in alkaline solutions

form: powder

Specific Gravity: 7.16

color: Yellow to greenish-yellow

Water Solubility: insoluble

Merck: 14,9817

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

InChIKey: ZNOKGRXACCSDPY-UHFFFAOYSA-N

Safety Information

Symbol(GHS): GHS07

Signal word: Warning

Hazard statements: H302

Precautionary statements: P264-P270-P301+P312a-P330-P501a

Hazard Codes: Xn

Risk Statements: 22-36/37/38

Safety Statements: 26-36-37/39

WGK Germany: -

RTECS: YO7760000

F: 21

TSCA: Yes

HS Code: 28259012

Toxicity: rat,LD50,oral,1059mg/kg (1059mg/kg),BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)BEHAVIORAL: EXCITEMENTBEHAVIORAL: MUSCLE WEAKNESS,Hygiene and Sanitation Vol. 31(7-9), Pg. 197, 1966.

Use

Tungsten trioxide is a chemical compound consisting of oxygen and the transition metal tungsten. It occurs naturally but rarely in the form of hydrates in some kinds of minerals. It has various applications. In industry, it can be used for making x-ray screen phosphors, fireproofing fabrics and gas sensors as well as a pigment in ceramics and paints. It can also be used for the preparation of electrochromic windows or smart windows. In addition, it can be used in semiconductors. It, together with titanium dioxide, has the potential to become an efficient photo-catalyst under visible light irradiation. Recent study has shown that mesoporous tungsten trioxide polyaniline nanocomposite can be used as an anode material for high-performance lithium-ion batteries.