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Jiangwu H.C. Starck Tungsten Products Co., Ltd.
Jiangwu H.C. Starck Tungsten Products Co., Ltd.
12 YRS
Jiangxi, China
Main Products:
Ammonium Paratungstate / Sodium Tungstate Dihydrate / Tungsten Trioxide / Sodium Tungstate
Jiangxi, China
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Sodium Tungstate / CAS 13472-45-2
OVERVIEW
Uses
Packaging
25 KG/Fibre Drum
Lead Time
14-30 days
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DESCRIPTION
Sodium Tungstate
CAS：13472-45-2
Molecular formula：Na2O4W
Molecular weight：293.81714
Structure：
Physicochemical properties: The anhydrous substance of sodium tungstate is a white opaque crystal block with δ，γ，β Three crystalline forms, from δ towards γ The transition temperature is about 570 ℃ γ towards β About 585 ℃, relative density 4.18 (18.5 ℃), melting point 700 ℃. In hydrogen, it will not change even when heated to 700 ℃, and it will become metallic tungsten at 1100 ℃.
Application: It is mainly used in the manufacture of metal tungsten, tungstic acid and tungstate, as well as dyes, pigments, inks, electroplating, etc. It is also used as fireproof agent and catalyst for fabrics and cellulose.
Typical Properties
Summary
It is mainly used in the manufacture of tungsten, tungstate and tungstate, dyes, pigments, inks, electroplating, etc., and also used as fire retardant and catalyst for fabrics and cellulose.
CAS No.
13472-45-2
Formula
Na2O4W
Molecular Mass
293.81714
Exact Mass
183.95100
PSA
0.00000
Logp
0.00000
IUPAC
disodium;dioxido(dioxo)tungsten
SMILES
[O-][W](=O)(=O)[O-].[Na+].[Na+]
Attribute classification
Matter Classification
inorganic
Category
Auxiliary > Water Treatment Chemicals
Auxiliary > Textile Auxiliaries
Surfactants, Catalysts > Other catalysts (surfactants)
Auxiliary > Textile Auxiliaries
Surfactants, Catalysts > Other catalysts (surfactants)
Chemical and Physical Properties
Melting Point
3410 °C(lit.)
Density
2.3 g/mL at 25 °C(lit.)
Boiling Point
5660 °C(lit.)
Appearance
White opaque crystal block
Export information
HS Code
28418020
Export Rebate
0%
Export Formalities
4,x,y
Risk Code
R36/38
Safety Label
Xn
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