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Merck
CN

12266

Sigma-Aldrich

Sodium dichromate dihydrate

purum, ≥99%

Synonym(s):

Sodium bichromate

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About This Item

Linear Formula:
Na2Cr2O7 · 2H2O
CAS Number:
7789-12-0
Molecular Weight:
298.00
EC Number:
234-190-3
MDL number:
MFCD00149166
UNSPSC Code:
12352302
PubChem Substance ID:
329749680
Assay:
≥99%
Form:
solid

Key Documents

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grade

purum

Assay

≥99%

form

solid

reaction suitability

reagent type: oxidant

mp

91 °C (lit.)

anion traces

chloride (Cl-): ≤500 mg/kg
sulfate (SO42-): ≤5000 mg/kg

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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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

Regulatory Information

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Silvio De Flora et al.
Mutation research, 610(1-2), 38-47 (2006-07-29)
Chromium(VI) compounds are genotoxic in a variety of cellular systems. Their potential carcinogenicity is affected by toxicokinetic patterns restricting bioavailability to certain targets, and by metabolic pathways affecting interaction of chromate-derived reactive species with DNA. Epidemiological data indicate that chromium(VI)
Amanda J Lee et al.
Biomarkers : biochemical indicators of exposure, response, and susceptibility to chemicals, 9(2), 103-115 (2004-09-17)
Hexavalent chromium (Cr[VI]) is a genotoxic carcinogen that has been associated with an increased risk of nasal and respiratory tract cancers following occupational exposure. Although the precise mechanism(s) remain to be elucidated, there is evidence for a role of oxidative
Chad M Thompson et al.
Toxicological sciences : an official journal of the Society of Toxicology, 123(1), 58-70 (2011-06-30)
Chronic ingestion of high concentrations of hexavalent chromium [Cr(VI)] in drinking water induces intestinal tumors in mice. To investigate the mode of action (MOA) underlying these tumors, a 90-day drinking water study was conducted using similar exposure conditions as in
Isabelle Hininger et al.
Free radical biology & medicine, 42(12), 1759-1765 (2007-05-22)
Several studies have demonstrated beneficial effects of supplemental trivalent Cr in subjects with reduced insulin sensitivity with no documented signs of toxicity. However, recent studies have questioned the safety of supplemental trivalent Cr complexes. The objective of this study was
Sydney H Kaufman et al.
The journal of physical chemistry. A, 117(10), 2144-2151 (2013-02-21)
In the present study, we investigate the spectroscopy and photochemical behavior of chromate ester cluster ions in vacuo in the visible and near-UV. Chromate ester cluster ions Na(n)[CrO3(OCH3)](n+1)(-) (n = 1, 2) are generated by electrospray ionization of sodium dichromate
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