398063

Sodium dichromate dihydrate

ACS reagent, ≥99.5%

• Sinónimos: Sodium bichromate
• Fórmula lineal: Na₂Cr₂O₇ · 2H₂O
• Número de CAS: 7789-12-0
• Peso molecular: 298.00
• EC Number: 234-190-3
• MDL number: MFCD00149166
• UNSPSC Code: 12352302
• PubChem Substance ID: 329755905
• NACRES: NA.21

Propiedades

• grade: ACS reagent
• Quality Level: 200
• 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 (SO₄^2-): ≤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

Descripción

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.

Información de seguridad

• pictograms: GHS03,GHS06,GHS08,GHS05,GHS09
• signalword: Danger
• hcodes: H272,H301,H312,H314,H317,H330,H334,H340,H350,H360FD,H372,H410
• pcodes: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 1 Inhalation
• Storage Class: 5.1B - Oxidizing hazardous materials
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable