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Key Documents

Safety Information

08714

Millipore

Methyl Red solution

suitable for microbiology

Synonym(s):

Methyl red indicator solution

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About This Item

Empirical Formula (Hill Notation):
C15H15N3O2
CAS Number:
Molecular Weight:
269.30
Beilstein:
1843037
MDL number:
UNSPSC Code:
41171621
PubChem Substance ID:
NACRES:
NA.85

Pricing and availability is not currently available.

Agency

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

Quality Level

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+

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1 of 4

This Item
2263222630PHL80965
grade

technical grade

grade

-

grade

-

grade

primary reference standard

impurities

≤20% Dihydroquinidine (according to USP specifications., actual content given on label)

impurities

-

impurities

≤10% dihydroquinine hydrochloride (HPLC)

impurities

-

Gene Information

human ... SCN10A(6336), SCN11A(11280), SCN1A(6323), SCN2A(6326), SCN3A(6328), SCN4A(6329), SCN5A(6331), SCN7A(6332), SCN8A(6334), SCN9A(6335)

Gene Information

-

Gene Information

-

Gene Information

-

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

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

69.8 °F

Flash Point(C)

21 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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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
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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
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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

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