Methyl Red 98.0%(HPLC)

98.0%(HPLC)


Linear Formula:  C15H15N3O2 
Molecular Weight:  269.30g/mol
CAS Number: 493-52-7

Properties

Vapour pressure 2.89E-10mmHg at 25
Water Solubility Insoluble
Assay Purity >98%(HPLC)
Refractive index 1.592
B pt. 479.5 at 760mmHg
M pt. 182
Density 0.839 g/mL at 25

Safety Information

Symbol
HS Code 29270000
Flash point 11
Storage Temp. '20?
Storage Class 8
Packaging Glass Bottle
UN Number 1170

Description

Purpose
For R&D use onlynot for drug household or other uses.

General Description
Methyl red (2-(NN-dimethyl-4-aminophenyl) azobenzenecarboxylic acid) also called C.I. Acid Red 2 is an indicator dye that turns red in acidic solutions. It is an azo dye and is a dark red crystalline powder. Methyl red is a pH indicator it is red in pH under 4.4 yellow in pH over 6.2 and orange in between with a pKa of 5.1.