bn:00021829n
Noun Concept
Categories: Biphenyls, PH indicators, Naphthylamines, Naphthalenesulfonates, Azo dyes
EN
congo red  C32H22N6Na2O6S2  Congo red stain  Direct Red 28
EN
A red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions) WordNet 3.0
Definitions
Relations
Sources
EN
Congo red is an organic compound, the sodium salt of 3,3′-bis. Wikipedia
Chemical compound Wikidata
A dye that turns red in alkaline, blue in acidic solutions. Wiktionary
CATEGORY DOMAIN
DESCRIBED BY SOURCE
NAMED AFTER
SUBJECT HAS ROLE
USE
WordNet 3.0 & Open English WordNet
Wikipedia
Wikidata
Wiktionary