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398063

Sigma-Aldrich

Sodium dichromate dihydrate

ACS reagent, ≥99.5%

Synonym(s):
Sodium bichromate
Linear Formula:
Na2Cr2O7 · 2H2O
CAS Number:
Molecular Weight:
298.00
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

grade

ACS reagent

assay

≥99.5%

form

crystals

reaction suitability

reagent type: oxidant

impurities

≤0.005% NH4OH ppt.
≤0.005% insolubles

pH

3.5 (20 °C, 100 g/L)

mp

91 °C (lit.)

anion traces

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.01%

cation traces

Al: ≤0.002%
Ca: ≤0.003%

SMILES string

O.O.[Na+].[Na+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O

InChI

1S/2Cr.2Na.2H2O.7O/h;;;;2*1H2;;;;;;;/q;;2*+1;;;;;;;;2*-1

InChI key

JYDRNIYTFCBIFC-UHFFFAOYSA-N

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General description

Sodium dichromate dehydrate (SDD), a hexavalent chromium compound is commonly used as an oxidizing agent. Chromium (VI) compounds are genotoxic and group 1 IARC (International Agency for Research on Cancer) carcinogen. SDD is one of the common contaminants found in drinking water. Its toxic effects and carcinogenicity has been studied.

Application

Sodium dichromate dehydrate may be used in preparing Jones reagent which is employed for oxidation reactions. It may be used in the oxidation of arylalkanes.

Packaging

100, 500 g in poly bottle

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 1 Inhalation

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

More documents

Quotes and Ordering

Synthesis of novel types of polyester glycodendrimers as potential inhibitors of urinary tract infections.
Jean-d'Amour KT, et al.
New. J. Chem., 39(5), 4115-4127 (2015)
Lack of genotoxic effects in hematopoietic and gastrointestinal cells of mice receiving chromium (VI) with the drinking water.
De Flora S, et al.
Mutation Research, Reviews in Mutation Research, 659(1), 60-67 (2008)
Shaken not stirred; oxidation of alcohols with sodium dichromate.
Lou JD, et al.
Tetrahedron Letters, 47(3), 311-313 (2006)
Chromium Oxidations in Organic Chemistry
Cainelli G and Cardillo G.
Chromium Oxidations in Organic Chemistry, 29-32G-29-32G (2012)
A chronic oral reference dose for hexavalent chromium-induced intestinal cancer.
Thompson CM, et al.
Journal of Applied Toxicology, 34(5), 525-536 (2014)

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