Methyl Red, 99,97%, analytical indicator

Description

Methyl Red, 99,97%, analytical indicator
CAS
493-52-7,
Chemical formula (CH3)2NC6H4N=NC6H4CO2H
Other names:
2-(4-Dimethylaminophenylazo)benzoic acid, 4-Dimethylaminoazobenzene-2′-carboxylic acid, Acid Red 2
Methyl red (2-(N,N-dimethyl-4-aminophenyl) azobenzenecarboxylic acid), also called C.I. Acid Red 2, is an indicator dye that turns red in acidic solutions. It is an azo dye, and is a dark red crystalline powder.
In microbiology, methyl red is used in the methyl red test (MR test), used to identify bacteria producing stable acids by mechanisms of mixed acid fermentation of glucose.Methyl Red has a special use in Histopathology for showing acidic nature of tissue and presence of organisms with acidic natured cell walls.