402826

二クロム酸アンモニウム

ACS reagent, ≥99.5%

• 別名: 重クロム酸アンモニウム
• 化学式: (NH₄)₂Cr₂O₇
• CAS番号: 7789-09-5
• 分子量: 252.06
• EC Number: 232-143-1
• MDL番号: MFCD00010879
• UNSPSCコード: 12352302
• eCl@ss: 38180716
• PubChem Substance ID: 329755966
• NACRES: NB.24

特性

• グレード: ACS reagent
• 蒸気密度: 8.7 (vs air)
• アッセイ: ≥99.5%
• 形状: crystals
• 反応適合性: reagent type: oxidant
• 不純物: ≤0.005% insolubles
• 損失: ≤3.0% loss on drying
• pH: 3-4 (25 °C, 50 g/L)
• mp: 170 °C (dec.) (lit.)
• 微量陰イオン: chloride (Cl^-): ≤0.005%; sulfate (SO₄^2-): ≤0.01%
• 微量陽イオン: Ca: ≤0.002%; Fe: ≤0.002%; Na: ≤0.005%
• SMILES記法: N.N.O[Cr](=O)(=O)O[Cr](O)(=O)=O
• InChI: 1S/2Cr.2H3N.2H2O.5O/h;;2*1H3;2*1H2;;;;;/q2*+1;;;;;;;;;/p-2
• InChI Key: XAQCJVGGJJFLPP-UHFFFAOYSA-L

詳細

詳細

Ammonium dichromate is a hexavalent chromium compound with a high oxidation potential. Hexavalent chromium is potent carcinogen and an environmental pollutant.

アプリケーション

Ammonium dichromate may be used in the following processes:

• Oxidation of alcohols in the presence of Mg(HSO₄)₂ (magnesium hydrogen sulfate) and wet SiO₂ (silicon dixide).
• Preparation of Cr₂O₃/Al₂O₃ (chromium (III) oxide/aluminium oxide) catalysts.
• Oxidative coupling of thiols.
• Preparation of mesoporous molecular sieves.
• Preparation of polypyrrole (PPy).
• Preparation of solid oxide fuel cell (SOFC) interconnect.

安全性情報

• ピクトグラム: GHS03,GHS06,GHS08,GHS05,GHS09
• シグナルワード: Danger
• 危険有害性情報: H272,H301,H312,H314,H317,H330,H334,H340,H350,H360,H372,H410
• 注意書き: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• 危険有害性の分類: Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 1
• 保管分類コード: 4.1A - Other explosive hazardous materials
• WGK: WGK 3
• 引火点(°F): Not applicable
• 引火点(℃): Not applicable