Meaning of naphthamein | Babel Free
Definitions
A product formed by the oxidation of naphthalamine (also called naphthylamine), which was observed to produce blue precipitates that later became purple but that was considered useless as a commercial dyeing agent due to its poor color quality.
Examples
“Piria* observed that naphthalamine and its salts produce⟳ blue precipitates, afterwards becoming purple, when brought in contact⟳ with perchloride of iron⟳, terchloridc of gold, nitrate of silver, and other oxidizing agents. This product of oxidation he terms naphthamein.”
CEFR level
C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.
This word is part of the CEFR C1 vocabulary — advanced level.
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