398063

Natriumdichromat Dihydrat

ACS reagent, ≥99.5%

• Synonym(e): Natriumbichromat
• Lineare Formel: Na₂Cr₂O₇ · 2H₂O
• CAS-Nummer: 7789-12-0
• Molekulargewicht: 298.00
• EG-Nummer: 234-190-3
• MDL-Nummer: MFCD00149166
• UNSPSC-Code: 12352302
• PubChem Substanz-ID: 329755905
• NACRES: NA.21

Eigenschaften

• Qualität: ACS reagent
• Qualitätsniveau: 200
• Assay: ≥99.5%
• Form: crystals
• Eignung der Reaktion: reagent type: oxidant
• Verunreinigungen: ≤0.005% NH₄OH ppt.; ≤0.005% insolubles
• pH-Wert: 3.5 (20 °C, 100 g/L)
• mp (Schmelzpunkt): 91 °C (lit.)
• Anionenspuren: chloride (Cl^-): ≤0.005%; sulfate (SO₄^2-): ≤0.01%
• Kationenspuren: 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
• InChIKey: JYDRNIYTFCBIFC-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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.

Sicherheitshinweise

• Piktogramme: GHS03,GHS06,GHS08,GHS05,GHS09
• Signalwort: Danger
• H-Sätze: H272,H301,H312,H314,H317,H330,H334,H340,H350,H360FD,H372,H410
• P-Sätze: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Gefahreneinstufungen: 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
• Lagerklassenschlüssel: 5.1B - Oxidizing hazardous materials
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable