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methyl orange

noun Chemistry.

an orange-yellow, slightly water-soluble powder, C14H14N3NaO3S, used chiefly as an acid-base indicator.

Also called gold orange, helianthine B, orange III, tropaeolin D, tropeolin D.

Compare methyl red.

Origin of methyl orange

First recorded in 1880–85

Words nearby methyl orange

methyl isobutyl ketone, methyl isocyanate, methyl lactate, methyl methacrylate, methyl oleate, methyl orange, methyl parathion, methyl propyl ketone, methyl red, methyl salicylate, methyl styryl ketone

Example sentences from the Web for gold orange

Tint with methyl-orange and titrate with semi-normal ammonia.

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