Application

Methyl orange is used as a- pH indicator in the cell sap counterstain to crystal violet in staining pollen tubes component of a polychrome histological stain solution indicator, such as in assays of oxalic and malonic acids in other biomedical applications that include use in film dosimeters and as a reagent for the assay of bromide ions.

Biochem/physiol Actions

Methyl Orange is an azo dye which works as a pH indicator.

General description

Methyl orange (C.I. 13025) is the sodium salt of p-dimethylaminoazobenzenesulfonic acid.It is an orange-colored synthetic dye, which changes color depending on the pH of the solution. It develops a red color in acidic solution and yellow color in basic solution.

Packaging

25, 100, 500 g in glass bottle