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Definition of Congo Red in English :

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Congo Red

see synonyms of congo red

Noun

1. congo red

a red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions)

WordNet Lexical Database for English. Princeton University. 2010.

Congo Red

see synonyms of congo red
noun
a brownish-red soluble powder, used as a dye, a diagnostic indicator, a biological stain, and a chemical indicator. Formula: C32H22N6O6S2Na2

Collins English Dictionary. Copyright © HarperCollins Publishers

Congo Red

see synonyms of congo red
a sodium salt, C32H22O6N6S2Na2, used for dyeing wool and cotton and as an acid-base indicator: it becomes blue in an acid solution and remains red in an alkaline or neutral solution

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Congo Red

see synonyms of congo red
n.
A brownish-red powder, C32H22N6Na2O6S2, used in medicine and as a dye, indicator, and biological stain.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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