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Ammonium dichromate

SIGALD/402826 - ACS reagent, ≥99.5%

Synonym: Ammonium bichromate

CAS Number: 7789-09-5
Empirical Formula (Hill Notation): H8Cr2N2O7
Molecular Weight: 252.06
EC Number: 232-143-1
MDL Number: MFCD00010879
Linear Formula: (NH4)2Cr2O7
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-402826-100G 100 g
 $136.00
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This image depicts SKU: 402826-100G

 

anion traces chloride (Cl-): ≤0.005%
  sulfate (SO42-): ≤0.01%
assay ≥99.5%
cation traces Ca: ≤0.002%
  Fe: ≤0.002%
  Na: ≤0.005%
form crystals
grade ACS reagent
impurities ≤0.005% insolubles
InChI 1S/2Cr.2H3N.2H2O.5O/h;;2*1H3;2*1H2;;;;;/q2*+1;;;;;;;;;/p-2
InChI key XAQCJVGGJJFLPP-UHFFFAOYSA-L
loss ≤3.0% loss on drying
mp 170 °C (dec.) (lit.)
pH 3-4 (25 °C, 50 g/L)
Quality Level 200 
reaction suitability reagent type: oxidant
SMILES string N.N.O[Cr](=O)(=O)O[Cr](O)(=O)=O
vapor density 8.7 (vs air)
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.
General description: Ammonium dichromate is a hexavalent chromium compound with a high oxidation potential. Hexavalent chromium is potent carcinogen and an environmental pollutant.
Packaging: 100, 500 g in poly bottle
Purity ≥99.5%
mp 170 °C (dec.) (lit.)
UNSPSC 12352302

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