M7267
Methyl Red
pH indicator (pH 4.4 to 6.0)
Synonym(s):
2-(4-Dimethylaminophenylazo)benzoic acid, 4-Dimethylaminoazobenzene-2′-carboxylic acid, Acid Red 2
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About This Item
Linear Formula:
(CH3)2NC6H4N=NC6H4CO2H
CAS Number:
Molecular Weight:
269.30
Colour Index Number:
13020
Beilstein:
750102
EC Number:
MDL number:
UNSPSC Code:
12171500
technique(s)
titration: suitable
mp
179-182 °C (lit.)
SMILES string
CN(C)c1ccc(cc1)\N=N\c2ccccc2C(O)=O
InChI
1S/C15H15N3O2/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)/b17-16+
InChI key
CEQFOVLGLXCDCX-WUKNDPDISA-N
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General description
Methyl red (MR) is an anionic azo dye, which is extensively used in paper printing and textile dyeing purposes. It is used mainly in MR test for the intrageneric differentiation of Enterobacteriaceae. It is an acid-base indicator, which changes color depending upon the pH of the solution.
Storage Class Code
11 - Combustible Solids
WGK
WGK 2
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Regulatory Information
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Methods in Microbiology, Volume 19 (1987)
Barron's GED Canada: High School Equivalency Exam (2008)
Photocatalytic degradation of Methyl Red dye in aqueous solutions under UV irradiation using Ag+ doped TiO2.
Sahoo C, et al.
Desalination, 181(1-3), 91-100 (2005)
Oana Alexandru et al.
Journal of neuro-oncology, 102(1), 9-18 (2010-07-17)
A major focus of brain cancer research today is to translate understanding of glioma biology into advances in treatment, by exploring the potential of target therapy. Here we investigated the ability of three compounds belonging to the chemical class of
X D Zhang et al.
Journal of hazardous materials, 170(2-3), 883-887 (2009-06-09)
An aqueous C.I. Acid Red 2 solution was decolorized by electrolysis using iron as anode. The decolorization mechanism was investigated through experimental observations on the electrochemical behavior of C.I. Acid Red 2 on Pt rotating disk electrode, UV-visible spectra of
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