Sodium dichromate dihydrate, Reagent Grade

Description

CAS: 7789-12-0 | Cr2H4Na2O9 | 297.995 g/mol

Sodium dichromate is used as a strong oxidizing agent in organic synthesis. It is used in metal finishing as an aid of corrosion resistance, manufacture of inorganic chromate pigments and in the preparation of colored glass and ceramic glazes. It is used as a mordant for acidic dyes to improve their color-fast properties and as a corrosion inhibitors in undercoats and primers.

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: 7789-12-0
• Molecular Formula: Cr2H4Na2O9
• Molecular Weight (g/mol): 297.995
• MDL Number: MFCD00149166
• InChI Key: JYDRNIYTFCBIFC-UHFFFAOYSA-N
• Synonym: sodium dichromate dihydrate, unii-52125xyy2a, ccris 6344, disodium chromate dihydrate, sodium dichromate vi dihydrate, sodium dichromate dihydrate vi, chromic acid h2cr2o7 , disodium salt, dihydrate, dichromic acid h2cr2o7 , disodium salt, dihydrate, dsstox_cid_12061, dsstox_rid_78903
• PubChem CID: 108005
• IUPAC Name: disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium;dihydrate
• SMILES: O.O.[O-][Cr](=O)(=O)O[Cr](=O)(=O)[O-].[Na+].[Na+]

• Melting Point: 100°C-2H₂O
• Color: Red
• Physical Form: Crystalline
• Quantity: 2 kg
• Solubility Information: Soluble in waterSoluble in water. Insoluble in alcohol.
• Formula Weight: 298.00 (261.97 Anhydrous)
• Grade: Reagent
• Sensitivity: Hygroscopic
• Appearance: Red crystals
• Density: 2.348
• Chemical Name or Material: Sodium dichromate dihydrate

Safety and Handling

Hazard Category	H272-H301-H312-H314-H317-H330-H334-H335-H340-H350-H360FD-H372
Precautionary Statement	P201-P202-P210-P220-P221-P260-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	DOT Class: 5.1, Packaging Group: II
EINECSNumber	234-190-3
RTECSNumber	HX7750000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only