Sodium dichromate dihydrate, 98%, Thermo Scientific Chemicals

Description

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 inhibitor 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.

Applications
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 inhibitor in undercoats and primers.

Solubility
Soluble in water. Insoluble in alcohol.

Notes
Keep away from sources of ignition, combustible materials. Do not ingest. Do not breathe dust.

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 (in - 2H₂O)
• Quantity: 100 g
• Linear Formula: Na₂Cr₂O₇·2H₂O
• UN Number: UN3087
• Merck Index: 14,8609
• Solubility Information: Soluble in water. Insoluble in alcohol.
• Formula Weight: 298.00 (261.97 Anhydrous)
• Percent Purity: 99%
• Odor: Odorless
• Sensitivity: Hygroscopic
• 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
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-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	234-190-3
RTECSNumber	HX7750000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only