M8256

Methyl Red sodium salt

Crystalline

• Synonym(s): 4-Dimethylaminoazobenzene-2′-carboxylic acid sodium salt, Acid Red 2
• Empirical Formula (Hill Notation): C₁₅H₁₄N₃NaO₂
• CAS Number: 845-10-3
• Molecular Weight: 291.28
• Colour Index Number: 13020
• Beilstein: 4065488
• EC Number: 212-682-9
• MDL number: MFCD00002426
• UNSPSC Code: 12171500
• PubChem Substance ID: 24897234

Properties

• Agency: suitable for SM 2310; suitable for SM 2320
• Quality Level: 200
• form: powder
• technique(s): titration: suitable
• visual transition interval: 4.2-6.2, pink to yellow
• solubility: soluble, clear, orange
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: [Na+].CN(C)c1ccc(cc1)\N=N\c2ccccc2C([O-])=O
• InChI: 1S/C15H15N3O2.Na/c1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20;/h3-10H,1-2H3,(H,19,20);/q;+1/p-1/b17-16+;
• InChI key: GNTPCYMJCJNRQB-CMBBICFISA-M

Description

General description

Methyl Red is an azo dye that indicates the presence of acid in the culture medium, which is formed due to fermentation of sugar by bacteria. This red dye is reduced to orange color in the presence of acid. Methyl Red has been used as a part of IMViC (indole, methyl red, Voges-Proskauer and citrate utilization or catalase production test). IMViC is a biochemical test performed to differentiate among the coliforms, specifically Escherichia coli and Enterobacter aerogene.

Methyl red sodium salt is the sodium salt of methyl red synthetic dye, which belongs to the azo group of dyes.

Application

Methyl red sodium salt is primarily used in microbiology in order to identify bacteria such as Enterobacter agglomerans in dye-contaminated sludge.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves