Skip to Content
Merck
CN

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

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Linear Formula:
(CH3)2NC6H4N=NC6H4CO2H
CAS Number:
493-52-7
Molecular Weight:
269.30
UNSPSC Code:
12171500
EC Number:
207-776-1
Beilstein/REAXYS Number:
750102
Colour Index Number:
13020
MDL number:
MFCD00002425

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

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

technique(s)

titration: suitable

mp

179-182 °C (lit.)

Looking for similar products? Visit Product Comparison Guide

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

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

新产品
This item has

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
068K3522
037K3733
123K3733
123H3643
094K3729

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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
Taiga Fujii et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(35), 10865-10872 (2012-07-26)
Asymmetric dye clusters with a single fluorophore (Cy3) and multiple quenchers (4'-methylthioazobenzene-4-carboxylate, methyl red, and 4'-dimethylamino-2-nitroazobenzene-4-carboxylate) were prepared. The dye and one-to-five quenchers were tethered through D-threoninol to opposite strands of a DNA duplex. NMR analysis revealed that the clusters
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service