Product name:Methyl Red
CAS:493-52-7
Molecular Formula:C15H15N3O2
Formula Weight:269.3
Description:
Specification:25g
Methyl Red is a shiny purple crystal or reddish brown powder, soluble in ethanol and acetic acid but almost insoluble in water. After long-term preservation, the sensitivity of ethanol solution can be significantly reduced due to esterification of carboxyl group. The maximum absorption wavelength is 410nm, which can be used for living protozoa staining. Acid-base indicator, pH discoloration range 4.4 (red) ~ 6.2 (yellow); Titrating ammonia, weak organic bases and alkaloids, but not applicable to organic acids other than oxalic acid and picric acid; Methyl Red can be combined with bromocresol green and methylene blue to form a mixed indicator to shorten the range of discoloration and increase the sensitivity of discoloration. An adsorption indicator for precipitation titration, such as the titration of fluoride ions with thorium nitrate; Free chlorine, chlorite and other oxidants were detected.