Potassium dichromate, 99%

Description

CAS: 7778-50-9 | Cr2K2O7 | 294.182 g/mol

Potassium dichromate is most often used as an oxidizing agent in laboratories and industries. It is used as a precursor to prepare potassium chrome alum which finds application in leather finishing and tanning. It is utilized in the preparation of chromic acid for cleaning glassware and etching materials. It is an active ingredient in cement used for retards setting and improves its density and texture. Furthermore, it is used in photography and in photographic screen printing. It is also used in wet test analysis as an analytical lab reagent and in ethanol determination.

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.

Applications
Potassium dichromate is most often used as an oxidizing agent in laboratories and industries. It is used as a precursor to prepare potassium chrome alum which finds application in leather finishing and tanning. It is utilized in the preparation of chromic acid for cleaning glassware and etching materials. It is an active ingredient in cement used for retards setting and improves its density and texture. Furthermore, it is used in photography and in photographic screen printing. It is also used in wet test analysis as an analytical lab reagent and in ethanol determination.

Solubility
Soluble in water. Insoluble in alcohol.

Notes
Incompatible with strong oxidizing agents, reducing agents, strong bases, organic materials, acids, powdered metals, acid anhydrides and hydrazine.

Specifications

Chemical Identifiers

• CAS: 7778-50-9
• Molecular Formula: Cr2K2O7
• Molecular Weight (g/mol): 294.182
• MDL Number: MFCD00011367
• InChI Key: KMUONIBRACKNSN-UHFFFAOYSA-N
• Synonym: potassium dichromate, potassium bichromate, kaliumdichromat, iopezite, dipotassium bichromate, dipotassium dichromate, potassium dichromate vi, dichromic acid dipotassium salt, dipotassium dichromium heptaoxide, bichromate of potash
• PubChem CID: 24502
• ChEBI: CHEBI:53444
• IUPAC Name: dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium
• SMILES: [O-][Cr](=O)(=O)O[Cr](=O)(=O)[O-].[K+].[K+]

• Melting Point: 398°C
• Quantity: 500 g
• Linear Formula: K₂Cr₂O₇
• UN Number: UN3087
• Merck Index: 14,7627
• Solubility Information: Soluble in water. Insoluble in alcohol.
• Formula Weight: 294.18
• Percent Purity: 99%
• Odor: Odorless
• Density: 2.676
• Chemical Name or Material: Potassium dichromate

Safety and Handling

Hazard Category	H272-H301-H310+H330-H314-H317-H334-H335-H340-H350-H360FD-H372
Hazard Statement	GHS H Statement H272-H301-H330-H334-H340-H350-H360-H372-H314-H312-H317 May intensify fire; oxidizer. Toxic if swallowed. Fatal if inhaled. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause genetic defects. May cause cancer. May damage fertility or the unborn child. Causes damage to organs through prolonged or repeated exposure. Causes severe skin burns and eye damage. Harmful in contact with skin. May cause an allergic skin reaction.
Precautionary Statement	P201-P202-P210-P220-P221-P260-P262-P264b-P270-P271-P272-P280g-P281-P284-P285-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P333+P313-P363-P370+P378q-P501c
DOTInformation	Transport Hazard Class: 5.1; Packing Group: II; Proper Shipping Name: OXIDIZING SOLID, TOXIC, N.O.S.
EINECSNumber	231-906-6
RTECSNumber	HX7680000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only