Description
Methyl Red solution, 100mL
suitable for microbiology
Synonym(s):
Methyl red indicator solution
Empirical Formula (Hill Notation):
C15H15N3O2
CAS Number:
493-52-7
Molecular Weight:
269.30
Beilstein/REAXYS Number:
1843037
MDL number:
MFCD00002425
PubChem Substance ID:
329748627
NACRES:
NA.85
PROPERTIES
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
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.
SAFETY INFORMATION
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_germany
WGK 1
flash_point_f
69.8 °F
flash_point_c
21 °C
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter