Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

More Documents

08714

Millipore

Methyl Red solution

suitable for microbiology

Synonym(s):

Methyl red indicator solution

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C15H15N3O2
CAS Number:
493-52-7
Molecular Weight:
269.30
Beilstein/REAXYS Number:
1843037
MDL number:
MFCD00002425
UNSPSC Code:
41171621
PubChem Substance ID:
329748627
NACRES:
NA.85

agency

according to GB 4789.30-2016
according to ISO 22964:2017

Quality Level

200

product line

BioChemika

shelf life

limited shelf life, expiry date on the label

composition

dist. water, 200 mL
ethanol 95%, 300 mL
methyl red, 0.1 g

technique(s)

microbe id | metabolite detection: suitable

application(s)

clinical testing
environmental
food and beverages
microbiology

suitability

Enterococcus spp.
Escherichia coli
Klebsiella spp.
Proteus spp.
Pseudomonas spp.
Staphylococcus spp.
bacteria

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

Looking for similar products? Visit Product Comparison Guide

General description

Methyl red solution is an azo dye which turns to red when pH is below 4.4 (yellow pH < 6.2, orange pH 4.4-6.2). Some bacteria utilize glucose to form large amounts of acid with the result that the pH value of the medium falls distinct. Other species produce no or less free acid. This difference can be visualized by using methyl red. This test is used to differentiate enteric bacteria.

Application

Methyl red solution is a pH indicator dye recommended for detection of bacteria producing acid from glucose fermentation such as Enterobacteriaceae in various samples.

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Danger

hcodes

H225,H319

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

69.8 °F

flash_point_c

21 °C

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCG7250
BCCF7287
BCCC4100
BCBZ4454
BCBX4012

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

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
Yuyi Yang et al.
Bioresource technology, 130, 517-521 (2013-01-17)
Azo dyes are toxic and carcinogenic and are often present in industrial effluents. In this research, azoreductase and glucose 1-dehydrogenase were coupled for both continuous generation of the cofactor NADH and azo dye removal. The results show that 85% maximum
Feng-Yun Wang et al.
Nanoscale, 3(8), 3269-3276 (2011-07-01)
Nanoporous and nonporous three-dimensional silicon nanowire arrays (SiNWAs) prepared with metal-assisted chemical etching method were investigated as photocatalysts in dye photodegradation systematically. In comparison with nonporous SiNWAs, nanoporous SiNWAs have higher surface area, larger pore volume, stronger light absorption and
Angel Martinez et al.
Proceedings of the National Academy of Sciences of the United States of America, 108(52), 20891-20896 (2011-12-14)
Noncontact optical trapping and manipulation of micrometer- and nanometer-sized particles are typically achieved by use of forces and torques exerted by tightly focused high-intensity laser beams. Although they were instrumental for many scientific breakthroughs, these approaches find few technological applications
S S Gomare et al.
Journal of applied microbiology, 106(3), 993-1004 (2009-02-04)
To evaluate the potential of Brevibacillus laterosporus MTCC 2298 for the decolourization of different textile azo dyes including methyl red, mechanism of biotransformation and the toxicity of products. Brevibacillus laterosporus showed decolourization of thirteen different azo dyes including methyl red.
View All Related Papers

Articles

Identification of Microorganisms Based on Color

For microbiologists the most fundamental stain was developed in 1884 by the Danish bacteriologist Hans Christian Gram.

Differentiation of Escherichia coli from coliforms

There are many other methods of detection to indicate the presence of E. coli. Review common tests and biochemical reactions for this contaminant.

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