methyl orange

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:
1880–85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Methyl orange is always a great word to know.
So is glacial. Does it mean:
noting compounds that readily decompose or change into other compounds
of, pertaining to, or tending to develop into icelike crystals: glacial phosphoric acid
WordNet
methyl orange

noun
an azo dye used as an acid-base indicator; used for titrations involving weak bases 
WordNet® 3.0, © 2006 by Princeton University.
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