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Ammonium dichromate, 99.995% (metals basis)

Catalog No. AA4318014
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AA4318022 100 g
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Catalog No. AA4318014 Supplier Thermo Scientific Chemicals Supplier No. 04318014
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Description

CAS: 7789-09-5 | Cr2H8N2O7 | 252.06 g/mol

Ammonium dichromate is used in photo engraving, dye mordant, pigments, pickling, photography, process engraving, lithography, pyrotechnics, glazes for porcelain and china wares. It acts as a catalyst and a source of nitrogen in the laboratory and as the photoactive site. It is also used in the preparation of alizarin and chrome alum. Further, it is used in leather and oil industry for tanning and purification respectively. It is involved in the production of the phosphor raster television screens and other devices.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Chemical Identifiers

CAS 7789-09-5
Molecular Formula Cr2H8N2O7
Molecular Weight (g/mol) 252.06
MDL Number MFCD00010879
InChI Key JOSWYUNQBRPBDN-UHFFFAOYSA-P
Synonym ammonium dichromate, ammonium bichromate, diammonium dichromate, ammonium dichromate vi, ammoniumbichromaat dutch, ammoniumdichromaat dutch, ammoniumdichromat german, unii-5j18bp595g, hsdb 481
PubChem CID 24600
IUPAC Name diazanium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium
SMILES [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr](=O)(=O)[O-]

Specifications

Melting Point 170°C (decomposition)
Physical Form Crystalline
Quantity 25 g
UN Number UN1439
Merck Index 14,515
Solubility Information Soluble in water and alcohol. Insoluble in acetone.
Formula Weight 252.1
Percent Purity 99.999%
Odor Odorless
Assay (metals basis)
Chemical Name or Material Ammonium dichromate
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Safety and Handling

Hazard Category H272-H301-H312-H314-H317-H330-H334-H340-H350-H360FD-H372-H500
Hazard Statement GHS H Statement
H272-H330-H334-H340-H350-H360-H372-H314-H318-H302-H312-H317
May intensify fire
oxidizer.
Fatal if inhaled.
May cause allergy or asthma symptoms or breathing difficulties if inhaled.
May cause genetic defects.
Precautionary Statement P201-P202-P260-P264b-P270-P271-P272-P280g-P281-P284-P285-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P333+P313-P363-P501c
DOTInformation Transport Hazard Class: 5.1; Packing Group: II; Proper Shipping Name: AMMONIUM DICHROMATE
EINECSNumber 232-143-1
RTECSNumber HX7650000
TSCA Yes
Recommended Storage Ambient temperatures

RUO – Research Use Only