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| | Sodium tungstate dihydrate Basic information |
| Product Name: | Sodium tungstate dihydrate | | Synonyms: | SODIUM TUNGSTATE 2H2O;SODIUM TUNGSTATE-2-HYDRATE;SODIUM TUNGSTATE DIHYDRATE;SODIUM TUNGSTATE HYDRATED;SODIUM TUNGSTATE(VI) DIHYDRATE;TUNGSTIC ACID NA-SALT 2H2O;TUNGSTIC ACID SODIUM SALT DIHYDRATE;Tungsticaciddisodiumsaltdihydrate | | CAS: | 10213-10-2 | | MF: | H2NaO5W- | | MW: | 288.84 | | EINECS: | 600-275-2 | | Product Categories: | metal tungstate | | Mol File: | 10213-10-2.mol |  |
| | 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 | | color | White to slightly yellow | | Specific Gravity | 3.25 | | 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) |
| 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) |
| | Sodium tungstate dihydrate Usage And Synthesis |
| Chemical Properties | white to slightly yellow crystalline powder or | | 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. | | 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. | | 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 Preparation Products And Raw materials |
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