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Alfa Aesar™ Methyl Red sodium salt

$34.07 - $317.32

Chemical Identifiers

Chemical Name or Material Methyl Red sodium salt
CAS 845-10-3
Molecular Formula C15H14N3NaO2
Formula Weight 291.29g/mol
MDL Number MFCD00002426
Beilstein 4065488
Synonym C.I. 13020; Methyl Red, water soluble
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Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAA1745522

 
alfa aesar™
A17455-22
100g Each for $85.97

AAA1745514

 
alfa aesar™
A17455-14
25g Each for $34.07

AAA1745536

 
alfa aesar™
A17455-36
500g Each for $317.32
Description & Specifications

Specifications

Quantity 100g
Chemical Name or Material Methyl Red sodium salt
CAS 845-10-3
Molecular Formula C15H14N3NaO2
Formula Weight 291.29g/mol
MDL Number MFCD00002426
Beilstein 4065488
Synonym C.I. 13020; Methyl Red, water soluble
TSCA TSCA

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.

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

Notes
Store at room temperature. Reactive with oxidizing agents.