| / English Dictionary |
CONGO RED
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions)
Classified under:
Hypernyms ("congo red" is a kind of...):
acid-base indicator (an indicator that changes color on going from acidic to basic solutions)
azo dye (any dye containing one or more azo groups)
Domain category:
solution (a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution)
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