Methyl Red CAS 493-52-7

Description

Methyl Red
Methyl Red Quick Details
Product Name:Methyl Red
CAS No:493-52-7
Molecular Fomula:C15H15N3O2
Molecular weight:269.3
Appearance:Shiny purple crystal or reddish brown powder
Assay:99%
Molecular Strycture:
Methyl Red Typical Properties

Item
Specifications

maximum absorption wavelength，λ1
（PH4.5）,nm
523~528

λ2（PH6.2）,nm
427~437

Mass absorption coefficient，λ1
（PH4.5）,L/(cm·g) ≥
130

λ2（PH6.2）,L/(cm·g) ≥
70

PH domain color
4.5 (red) to 6.2 (yellow)

Ethanol dissolution test
Qualified

Loss on drying≤
1

Residue on ignition (Sulfate)≤
0.2

 
Methyl Red Usage
Live protozoan staining; acid-base indicator, pH change range from 4.4 (red) to 6.2 (yellow); titration of ammonia, weak organic bases and alkaloids, but not suitable for organic acids other than oxalic acid and picric acid; can be combined with Chemicalbook Bromocresol green and methylene blue constitute a mixed indicator to shorten the color range and increase the sensitivity of the color change; adsorption indicator for precipitation titration, such as thorium nitrate titration of fluoride ion; verification of free chlorine, chlorite and other oxidants…
Methyl Red Package
25kg/fiber drum.
Methyl Red Storage
Treasury is ventilated, low temperature and dry;