Sodium tungstate CAS#13472-45-2

CAS Number: 13472-45-2
Chemical Formula: Na2WO4
Synonyms:

TUNGSTEN AA STANDARD
AMMONIUM TUNGSTATE (PARA)
AMMONIUM WOLFRAMATE

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Sodium tungstate CAS#13472-45-2

Sodium tungstate is a sodium salt of orthotungstate. It is a colorless crystals or white crystalline powder. Soluble in water; insoluble in alcohol and acids. noncombustible. Sodium tungstate has three crystalline forms, δ, γ and β. The transition temperature from δ to γ is about 570℃, and from γ to β is about 585℃. In hydrogen is heated to 700 ℃ also does not change, to 1100 ℃ will become metal tungsten.Sodium tungstate is an inorganic sodium salt having tungstate as the counterion. Combines with hydrogen peroxide for the oxidation of secondary amines to nitrones. It has a role as a reagent. It contains a tungstate.

Sodium tungstate Chemical Properties

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
InChI	InChI=1S/2Na.4O.W/q2+1;;;2-1;
InChIKey	XMVONEAAOPAGAO-UHFFFAOYSA-N
SMILES	[W]([O-])([O-])(=O)=O.[Na+].[Na+]
LogP	0
CAS DataBase Reference	13472-45-2(CAS DataBase Reference)
EPA Substance Registry System	Sodium tungsten oxide (Na2WO4) (13472-45-2)

Safety Information

Hazard Codes	Xi
Risk Statements	36/38
Safety Statements	6-26-36
RIDADR	UN 3089 4.1/PG 2
WGK Germany	3
RTECS	YO7175000
TSCA	TSCA listed
HazardClass	6.1(b)
PackingGroup	III
Hazardous Substances Data	13472-45-2(Hazardous Substances Data)