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| 化学名: | タングステン酸ナトリウム | | 英語化学名: | Sodium tungstate dihydrate | | 别名: | 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;TUNGSTIC ACID SODIUM DIHYDRATE | | CAS番号: | 10213-10-2 | | 分子式: | H2NaO5W- | | 分子量: | 288.84 | | EINECS: | 600-275-2 | | カテゴリ情報: | metal tungstate | | Mol File: | 10213-10-2.mol |  |
| 融点 | 698 °C(lit.) | | 比重(密度) | 4.18 | | 貯蔵温度 | Store at +15°C to +25°C. | | 溶解性 | H2O: 1 M at 20 °C, clear, colorless | | 外見 | Solid | | 比重 | 3.25 | | 色 | White to slightly yellow | | PH | 9.5-11.5 (25℃, 1M in H2O) | | 臭い (Odor) | Odorless | | 酸塩基指示薬変色域(pH) | 9 - 11.5 at 100 g/l at 20 °C | | 水溶解度 | 730 g/L (20 ºC) | | 極大吸収波長 (λmax) | λ: 260 nm Amax: ≤0.120
λ: 280 nm Amax: ≤0.035 | | Merck | 14,8698 | | 暴露限界値 | ACGIH: TWA 3 mg/m3
NIOSH: TWA 1 mg/m3; STEL 3 mg/m3 | | InChIKey | WPZFLQRLSGVIAA-UHFFFAOYSA-N | | CAS データベース | 10213-10-2(CAS DataBase Reference) | | EPAの化学物質情報 | Tungstate (WO42-), disodium, dihydrate, (T-4)- (10213-10-2) |
| 主な危険性 | Xn | | Rフレーズ | 22-36/38-36 | | Sフレーズ | 36-37/39-26-39 | | WGK Germany | 1 | | RTECS 番号 | YO7900000 | | TSCA | Yes | | HSコード | 28418000 | | 毒性 | LD50 (mg tungstate/kg) in rabbits: 105 i.m.; in rats: 240 s.c. (Venugopal, Luckey) |
| | タングステン酸ナトリウム Usage And Synthesis |
| 外観 | 白色, 結晶～結晶性粉末 | | 溶解性 | 水に易溶。エタノール, エーテルに殆ど不溶。水に溶けやすく、エタノール及びジエチルエーテルにほとんど溶けない。 | | 用途 | 触媒(和光試薬時報Vol.65 No.2,p.29(1997))。 | | 化学的特性 | white to slightly yellow crystalline powder or | | 使用 | Sodium tungstate dihydrate may be used in the preparation of aqueous sols of tungsten oxide dihydrate. | | 使用 | 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. | | 使用 | Sodium tungstate dihydrate is currently being investigated as a potential therapy for obesity. Sodium tungstate dihydrate is also an inhibitor of acid phosphatases. | | 定義 | ChEBI: A hydrate that is the dihydrate form of sodium tungstate. Combines with hydrogen peroxide for the oxidation of secondary amines to nitrones | | 一般的な説明 | Sodium tungstate dihydrate is a sodium salt of tungstic acid, which occurs as white colorless crystals. | | 純化方法 | 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]. |
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