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Methyl Red sodium salt CAS 845-10-3

C.I. 13020
Acid red 2 sodium salt
2-[4-(Dimethylamino)phenylazo]benzoic acid sodium salt
CAS 845-10-3
Assay 95%min
Packing 25kg/drum

Methyl Red sodium salt

NameMethyl Red sodium salt
SynonymsC.I. 13020; Acid red 2 sodium salt                                       
                              Molecular StructureCAS # 845-10-3, Methyl Red sodium salt, C.I. 13020, 2-[4-(Dimethylamino)phenylazo]benzoic acid sodium salt
Molecular FormulaC15H14N3NaO2
Molecular Weight291.28
CAS Registry Number845-10-3
EC Number212-682-9

Specification:

Item

Specification

Appearance

Brown-red powder

PH ranges

pH 4.2 (red) to pH 6.2 (yellow)

Solubility in ethanol

Pass

Oxidated by bromine test

Pass

Residue on ignition(as SO4),%

20.5-24.0

Uses:

1.Acid base indicator: 

Used for acid-base titration in chemical experiments, accurately determining the endpoint through color change (from red to yellow).

2.Microbial identification: 

Used for methyl red test to identify bacterial types (such as distinguishing Escherichia coli) based on changes in the color of the culture medium.

3.Biological staining: 

Can be used as a staining agent for biological samples, for microscopic observation.

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