AMMONIUM DICHROMATE ACS REAGENT >=99.5%

General description

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

Application

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.

Molecular Weight: 252.06. Empirical Formula: H₈Cr₂N₂O₇. linearFormula: (NH₄)₂Cr₂O₇. grade: ACS reagent. Quality Level: 200. vapor density: 8.7 (vs air). Assay: ≥. 99.5%. form: crystals. reaction suitability: reagent type: oxidant. impurities: ≤. 0.005% insolubles. loss: ≤. 3.0% loss on drying. pH: 3-4 (25 . °C, 50 . g/L). mp: 170 . °C (dec.) (lit.). anion traces: chloride (Cl^-): ≤. 0.005%, sulfate (SO₄^2-): ≤. 0.01%. cation traces: Ca: ≤. 0.002%, Fe: ≤. 0.002%, Na: ≤. 0.005%. SMILES string: 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. Pictograms: GHS03,GHS05,GHS06,GHS08,GHS09. Signal Word: Danger. Hazard Statements: H272 - H301 - H312 - H314 - H317 - H330 - H334 - H340 - H350 - H360 - H372 - H410. Precautionary Statements: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338. Hazard Classifications: 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. Storage Class Code: 4.1A - Other explosive hazardous materials. WGK: WGK 3. Flash Point(F): Not applicable. Flash Point(C): Not applicable.