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845-10-3 - Methyl Red sodium salt - C.I. 13020 - Methyl Red, water soluble - A17455 - Alfa Aesar

A17455 Methyl Red sodium salt

CAS Number
845-10-3
Synonyms
C.I. 13020
Methyl Red, water soluble

Size Price ($) Quantity Availability
25g 22.45
100g 56.65
500g 209.09
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Methyl Red sodium salt

MDL
MFCD00002426
EINECS
212-682-9

Chemical Properties

Formula
C15H14N3NaO2
Formula Weight
291.29
Solubility
Soluble in water (800 mg/ml at 25°C), and slightly soluble in ethanol at (25°C).

Applications

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.

Notes

Store at room temperature. Reactive with oxidizing agents.

Literature References

Bin Zhao.; Jeffrey S. Moore.; David J. Beebe. Surface-Directed Liquid Flow Inside Microchannels. Science. 2001, 291 (5506),1023-1026.

Shizhuo Yin.; Kun-Wook Chung.; Xin Zhu. A novel all-optic tunable long-period grating using a unique double-cladding layer. Opt. Commun.. 2001, 196 (1-6),181-186.

Other References

Beilstein
4065488
Harmonized Tariff Code
2927.00
TSCA
Yes

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