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13472-45-2

Name TUNGSTEN
CAS 13472-45-2
EINECS(EC#) 231-143-9
Molecular Formula W
MDL Number MFCD00011461
Molecular Weight 183.84
MOL File 13472-45-2.mol
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Chemical Properties

Appearance Colorless crystals.Soluble in water; insoluble in alcohol and acids. Noncom- bustible.
Melting point  3410 °C(lit.)
Boiling point  5660 °C(lit.)
density  2.3 g/mL at 25 °C(lit.)
vapor pressure  0Pa at 25℃
solubility  H2O: soluble
form  wire
pka 3.5[at 20 ℃]
color  white rhombohedral crystals, crystalline
Water Solubility  g/100g H2O: 71.5 (0°C), 73.0 (20°C), 97.2 (100°C) [LAN05]
Merck  13,8772
LogP 0
Uses
Intermediate in preparation of tungsten com- pounds, (e.g., phosphotungstate), reagent, fire- proofing fabrics and cellulose, alkaloid precipitant.
CAS DataBase Reference 13472-45-2(CAS DataBase Reference)
EPA Substance Registry System Sodium tungsten oxide (Na2WO4) (13472-45-2)

Safety Data

Hazard Codes  Xi
Risk Statements 
R36/38:Irritating to eyes and skin .
Safety Statements 
S6:Keep under ... (inert gas to be specified by the manufacturer) .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
RIDADR  UN 3089 4.1/PG 2
WGK Germany  3
RTECS  YO7175000
HazardClass  6.1(b)
PackingGroup  III
Safety Profile
Poison by ingestion, intravenous, intramuscular, and subcutaneous routes. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits toxic fumes of Na2O. See also TUNGSTEN COMPOUNDS.
Hazardous Substances Data 13472-45-2(Hazardous Substances Data)

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