Methyl Red CAS 493-52-7

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;