216615

Potassium chromate

ACS reagent, ≥99.0%

• Linear Formula: K₂CrO₄
• CAS Number: 7789-00-6
• Molecular Weight: 194.19
• EC Number: 232-140-5
• MDL number: MFCD00011368
• UNSPSC Code: 12352300
• PubChem Substance ID: 329752190
• NACRES: NB.24

Properties

• grade: ACS reagent
• vapor density: 6.7 (vs air)
• assay: ≥99.0%
• form: crystals
• impurities: ≤0.005% insolubles
• pH: 8.6-9.8 (25 °C, 5%)
• mp: 971 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.005%; sulfate (SO₄^2-): ≤0.03%
• cation traces: Ca: ≤0.005%; Na: ≤0.02%
• SMILES string: [K+].[K+].[O-][Cr]([O-])(=O)=O
• InChI: 1S/Cr.2K.4O/q;2*+1;;;2*-1
• InChI key: XMXNVYPJWBTAHN-UHFFFAOYSA-N

Description

General description

Potassium chromate (K₂CrO₄) is an inorganic solid compound. It is mainly used as an oxidizing agent in the synthesis of organic compound.

Application

Potassium chromate is used as an oxidizing agent:

• In the conversion of primary and secondary alcohol into aldehydes and ketones using tetrabutylammonium hydrogen sulfate catalyst.

Potassium chromate is also used:

• To prepare magnetoactive compound by reacting with iron(II) sulfate.
• As a reagent in the conversion primary allylic and benzylic halides to aldehydes.

Safety Information

• pictograms: GHS08,GHS07,GHS09
• signalword: Danger
• hcodes: H315,H317,H319,H335,H340,H350i,H410
• pcodes: P202 - P273 - P280 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• Hazard Classifications: Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Eye Irrit. 2 - Muta. 1B - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable