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methyl orange

noun

, Chemistry.
  1. an orange-yellow, slightly water-soluble powder, C 1 4 H 1 4 N 3 NaO 3 S, used chiefly as an acid-base indicator.


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Word History and Origins

Origin of methyl orange1

First recorded in 1880–85
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Example Sentences

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

Disconnect the receiver, and tint its contents with methyl orange.

Tint with methyl orange, and run in from an ordinary burette normal solution of sulphuric acid until a pink tint is got.

The diluted solution is acid in reaction toward litmus and phenolphthalein and alkaline toward methyl orange.

Thus blue litmus is changed to red, and yellow methyl orange is changed to red.

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methyl oleatemethylparaben