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Methyl Red solution

Name: Methyl Red solution
Brand: SIAL

suitable for microbiology

Synonym(s):

Methyl red indicator solution

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About This Item

Empirical Formula (Hill Notation):

C₁₅H₁₅N₃O₂

CAS Number:

493-52-7

Molecular Weight:

269.30

UNSPSC Code:

41171621

NACRES:

NA.85

PubChem Substance ID:

329748627

MDL number:

MFCD00002425

Beilstein/REAXYS Number:

1843037

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Properties

Quality Segment

200

agency

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

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

Description

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.

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This Item	250198	M8256	861235
Millipore 08714 Methyl Red solution	Sigma-Aldrich 250198 Methyl Red	Sigma-Aldrich M8256 Methyl Red sodium salt	Sigma-Aldrich 861235 Methyl Red hydrochloride
description suitable for microbiology	description ACS reagent, crystalline	description Crystalline	description ACS reagent
agency according to GB 4789.30-2016, according to ISO 22964:2017	agency -	agency suitable for SM 2320, suitable for SM 2310	agency -
suitability Pseudomonas spp., Enterococcus spp., Staphylococcus spp., Klebsiella spp., bacteria, Escherichia coli, Proteus spp.	suitability -	suitability -	suitability -
technique(s) microbe id \| metabolite detection: suitable	technique(s) titration: suitable	technique(s) titration: suitable	technique(s) -
composition ethanol 95%, 300 mL , dist. water, 200 mL , methyl red, 0.1 g	composition -	composition -	composition -
application(s) clinical testing environmental food and beverages, microbiology	application(s) diagnostic assay manufacturing hematology histology	application(s) diagnostic assay manufacturing hematology histology	application(s) diagnostic assay manufacturing hematology histology
Quality Level 200	Quality Level 200	Quality Level 200	Quality Level 200

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pictograms

GHS02,GHS07

signalword

Danger

hcodes

H225,H319

pcodes

P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2

Storage Class

3 - Flammable liquids

wgk

WGK 1

flash_point_f

69.8 °F

flash_point_c

21 °C

ppe

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

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