Sodium tungstate dihydrate Chemical Properties

Melting point:

698 °C(lit.)

Density 

4.18

storage temp. 

Store at +15°C to +25°C.

solubility 

H₂O: 1 M at 20 °C, clear, colorless

form 

Solid

Specific Gravity

3.25

color 

White to slightly yellow

Odor

Odorless

PH Range

9 - 11.5 at 100 g/l at 20 °C

PH

9.5-11.5 (25℃, 1M in H2O)

Water Solubility 

730 g/L (20 ºC)

λmax

λ: 260 nm Amax: ≤0.120
λ: 280 nm Amax: ≤0.035

Merck 

14,8698

Exposure limits

ACGIH: TWA 3 mg/m3
NIOSH: TWA 1 mg/m3; STEL 3 mg/m3

InChIKey

WPZFLQRLSGVIAA-UHFFFAOYSA-N

CAS DataBase Reference

10213-10-2(CAS DataBase Reference)

EPA Substance Registry System

Tungstate (WO42-), disodium, dihydrate, (T-4)- (10213-10-2)

Safety Information

Hazard Codes 

Xn

Risk Statements 

22-36/38-36

Safety Statements 

36-37/39-26-39

WGK Germany 

1

RTECS 

YO7900000

TSCA 

Yes

HS Code 

28418000

Toxicity

LD50 (mg tungstate/kg) in rabbits: 105 i.m.; in rats: 240 s.c. (Venugopal, Luckey)

MSDS

• Language:English Provider:Tungstic acid sodium salt dihydrate
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

Sodium tungstate dihydrate Usage And Synthesis

Chemical Properties

white to slightly yellow crystalline powder or

Uses

Sodium tungstate dihydrate is currently being investigated as a potential therapy for obesity. Sodium tungstate dihydrate is also an inhibitor of acid phosphatases.

Uses

Sodium tungstate dihydrate may be used in the preparation of aqueous sols of tungsten oxide dihydrate.

Uses

Fireproofing and waterproofing fabrics; preparing complex Compounds such as phosphotungstate and silicotungstate; as a protective colloid in biological development methods; precipitant for alkaloids; catalyst in oxidation reactions; corrosion inhibitor for steel.

Definition

ChEBI: A hydrate that is the dihydrate form of sodium tungstate. Combines with hydrogen peroxide for the oxidation of secondary amines to nitrones

General Description

Sodium tungstate dihydrate is a sodium salt of tungstic acid, which occurs as white colorless crystals.

Purification Methods

The salt crystallises from hot water (0.8mL/g) on cooling to 0o. [Grüttner & Jender in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1727 1965].

Sodium tungstate dihydrate(10213-10-2)Related Product Information

• Tungstic acid
• Diclofenac sodium
• Sodium sulfate
• Sodium benzoate
• Sodium acetate
• Sodium chlorite
• Sodium bicarbonate
• Sodium hydroxide
• Sodium chloride
• Ammonium paratungstate
• Cobalt chloride
• Sodium tungstate
• SODIUM TETRATHIONATE DIHYDRATE
• Sodium tetraborate decahydrate
• Sodium thiomethoxide
• Sodium triacetoxyborohydride
• Sodium sulfide
• Sodium thiocyanate