Thermo Scientific Chemicals Methyl Red sodium salt

Product Code	Brand	Quantity
11438047	Thermo Scientific Chemicals A17455.14	25 g
11448047	Thermo Scientific Chemicals A17455.22	100 g
11458047	Thermo Scientific Chemicals A17455.36	500 g

Description

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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

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.

Chemical Identifiers

• CAS: 845-10-3
• Molecular Weight (g/mol): 291.286
• InChI Key: GNTPCYMJCJNRQB-UHFFFAOYSA-M
• PubChem CID: 4465632
• SMILES: CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)[O-].[Na+]

• Molecular Formula: C15H14N3NaO2
• MDL Number: MFCD00002426
• Synonym: C.I. 13020; Methyl Red, water soluble
• IUPAC Name: sodium;2-[[4-(dimethylamino)phenyl]diazenyl]benzoate

Specifications

• CAS: 845-10-3
• MDL Number: MFCD00002426
• Synonym: C.I. 13020; Methyl Red, water soluble
• InChI Key: GNTPCYMJCJNRQB-UHFFFAOYSA-M
• IUPAC Name: sodium;2-[[4-(dimethylamino)phenyl]diazenyl]benzoate
• PubChem CID: 4465632
• Chemical Name or Material: Methyl Red sodium salt

• Molecular Formula: C15H14N3NaO2
• Beilstein: 4065488
• Solubility Information: Soluble in water (800mg/ml at 25°C),and slightly soluble in ethanol at (25°C).
• SMILES: CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)[O-].[Na+]
• Molecular Weight (g/mol): 291.286
• Formula Weight: 291.29

Safety and Handling

missing translation for 'einecsNumber' : 212-682-9

missing translation for 'tsca' : Yes

Recommended Storage : Ambient temperatures

RUO – Research Use Only