Methyl Red Sodium Salt
Methyl Red sodium salt is the sodium salt of Methyl Red. Methyl red is an indicator dye that turns red in acidic solutions. It is a pH indicator, turning red under pH 4.4, yellow over pH 6.2, and orange in between those values. It is used in microbiology in the Voges-Proskauer test to identify bacteria that produce stable acids through mixed acid fermentation of glucose. Methyl-red positive bacteria include Proteus vulgaris and Escherichia coli. Methyl-red negative bacteria include Enterobacter aerogenes and Serratia marcescens.
Product Details
Category |
Dyes, Stains & Indicators |
---|---|
Price | POA |
CAS Number | 845-10-3 |
Formula | (CH3)2NC6H4N=NC6H4CO2Na |
Molecular Weight | 291.28 |
Appearance | pink to yellow |
Availability | In Stock |
Storage Conditions | Room temperature |
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