Methyl orange

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Methyl orange (geliantin, sodium 4- (4-dimetilaminofenilazo) benzenesulfonate) - known acid-base indicator, synthetic organic krasiteliz group of azo dyes, is a sodium salt.

Appearance at normal conditions: orange-yellow leaves or powder, flakes.

Is used as an acid-base indicator in determining the titrant strong oxidants, spectrophotometric determination of oxidants (chromium, bromine).

0.1% aqueous solution is used in analytical chemistry kakindikator.
Changes color from red in acid medium (pH 3,1 to 4,4) to orange in the yellow and neutral alkaline.

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