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Merck
CN

216615

Potassium chromate

ACS reagent, ≥99.0%

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About This Item

Linear Formula:
K2CrO4
CAS Number:
Molecular Weight:
194.19
NACRES:
NB.24
PubChem Substance ID:
UNSPSC Code:
12352300
EC Number:
232-140-5
MDL number:
Assay:
≥99.0%
Grade:
ACS reagent
Form:
crystals
Solubility:
water: soluble (39.4 g/l (86 °F / 30 °C), 637 g/l (68 °F / 20 °C))
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grade

ACS reagent

Quality Segment

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.)

solubility

water: soluble (39.4 g/l (86 °F / 30 °C), 637 g/l (68 °F / 20 °C))

anion traces

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

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.



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Danger

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

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable



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