Ammonium dichromate, 99.995% (metals basis)

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.

Specifications

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-]

• Melting Point: 170°C (decomposition)
• Physical Form: Crystalline
• Quantity: 100 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

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

SDS

RUO – Research Use Only