ChemicalBook > CAS DataBase List > Sodium tungstate
Sodium tungstate
- Product Name
- Sodium tungstate
- CAS No.
- 13472-45-2
- Chemical Name
- Sodium tungstate
- Synonyms
- Na2WO4;TUNGSTEN METAL;AMMONIUM WOLFRAMATE;W HC 40;TUNGSTEN RIBBON;SODIUM TUNGSTATE;disodiumtungstate;SODIUMTUNGSTENATE;Tungstate, sodium;TUNGSTEN STANDARD
- CBNumber
- CB1188314
- Molecular Formula
- Na2WO4
- Formula Weight
- 293.82
- MOL File
- 13472-45-2.mol
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Sodium tungstate Property
- 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)
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Safety
- Hazard Codes
- Xi
- Risk Statements
- 36/38
- Safety Statements
- 6-26-36
- RIDADR
- UN 3089 4.1/PG 2
- WGK Germany
- 3
- RTECS
- YO7175000
- HazardClass
- 6.1(b)
- PackingGroup
- III
- Hazardous Substances Data
- 13472-45-2(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
- Precautionary statements
-
P280Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P337+P313IF eye irritation persists: Get medical advice/attention.
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N-Bromosuccinimide Price
TRC
- Product number
- S655023
- Product name
- SodiumTungstate
- Packaging
- 5g
- Price
- $60
- Updated
- 2021/12/16
Matrix Scientific
- Product number
- 167903
- Product name
- Disodium tungstate
- Packaging
- 500g
- Price
- $702
- Updated
- 2021/12/16
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Sodium tungstate Chemical Properties,Usage,Production
Chemical Properties
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.
Uses
Intermediate in preparation of tungsten compounds, (e.g., phosphotungstate), reagent, fire-proofing fabrics and cellulose, alkaloid precipitant.
Definition
ChEBI: 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.
Preparation
Sodium tungstate is obtained by digestion of tungsten ores, the economically important representatives of which are tungstates, in base. Illustrative is the extraction of sodium tungstate from wolframite:
Fe/MnWO4 + 2 NaOH + 2 H2O → Na2WO4?2H2O + Fe/Mn(OH)2
Sodium tungstate can also be produced by treating tungsten carbide with a mixture of sodium nitrate and sodium hydroxide in a fusion process which overcomes the high exothermicity of the reaction involved.
Flammability and Explosibility
Not classified
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.
Sodium tungstate Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Sodium tungstate manufacturers
Hebei Chuanghai Biotechnology Co., Ltd
- Product
- Sodium tungstate, anhydrous 13472-45-2
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 10 mt
- Release date
- 2020-12-22
Hebei Chuanghai Biotechnology Co., Ltd
- Product
- Sodium tungstate 13472-45-2
- Price
- US $30.00-10.00/KG
- Min. Order
- 50KG
- Purity
- 99%
- Supply Ability
- 500000kg
- Release date
- 2022-09-21
Baoji Guokang Healthchem Co., Ltd.
- Product
- TUNGSTEN 13472-45-2
- Price
- US $46.80/KG
- Min. Order
- 1ASSAYS
- Purity
- 99%
- Supply Ability
- 100kg
- Release date
- 2021-06-07
13472-45-2, Sodium tungstateRelated Search:
Sodium tungstate dihydrate
MAGNESIUM TUNGSTATE
ALUMINUM TUNGSTATE
Calcium tungstate
CADMIUM TUNGSTATE
BARIUM TUNGSTATE
LEAD MOLYBDATE
copper(ii) tungstate hydrate
BISMUTH TUNGSTATE
Tungstic acid
SODIUM TUNGSTATE
SODIUM PHOSPHOTUNGSTATE
Tungsten
SODIUM METATUNGSTATE
Ammonium paratungstate
AMMONIUM WOLFRAMATE PENTAHYDRATE