PYRIDINIUM FLUOROCHROMATE Chemical Properties

Melting point:

160-165 °C (dec.)(lit.)

storage temp. 

Inert atmosphere,Room Temperature

Water Solubility 

Soluble in water

solubility 

sol DMF, acetonitrile, acetone; less sol dichloromethane; sparingly sol benzene, carbon tetrachloride, chloroform, hexane.

form 

Crystals

color 

Yellow-orange

Sensitive 

Moisture Sensitive

CAS DataBase Reference

83042-08-4(CAS DataBase Reference)

Safety Information

Hazard Codes 

O,T,N,Xi

Risk Statements 

49-8-43-50/53

Safety Statements 

53-45-60-61

RIDADR 

UN 1479 5.1/PG 2

WGK Germany 

2

Hazard Note 

Irritant

HazardClass 

5.1

PackingGroup 

II

HS Code 

29333990

MSDS

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

PYRIDINIUM FLUOROCHROMATE Usage And Synthesis

Chemical Properties

yellow orange crystals

Uses

Pyridinium fluorochromate can be used as a mild oxidant for primary and secondary alcohols and can oxidize reactive C-H bonds.

Preparation

Pyridinium fluorochromate is prepared from Pyridine, aqueous 40% Hydrofluoric Acid, and Chromium(VI) Oxide in a molar ratio  1:1.5:1. The bright orange, crystalline reagent is isolated by filtration and dried in vacuo; yield 93-94%. The procedure can be performed on a 200 g scale.

storage

The dry orange crystalline reagent can be stored in sealed polythene bags for long periods  without decomposition. Reaction solvents must be anhydrous and free of reducing impurities. Chromium(VI) derivatives are  reputed to be toxic agents.

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