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Methyl Red CAS 493-52-7

Assay: 99%
Appearance: Shiny purple crystal or reddish brown powder
Capacity: Depending on the order
Packaging: 25kg/fiber drum
Sample: available

related documents:

  • COA of Methyl red CAS 493-52-7
  • TDS of Methyl Red CAS 493-52-7


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
Molecular Strycture: Methyl Red 493-52-7

Methyl Red Typical Properties

Item Specifications
maximum absorption wavelength,λ1
λ2(PH6.2),nm 427~437
Mass absorption coefficient,λ1
(PH4.5),L/(cm·g) ≥
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;

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