# Wurster's blue

> English word · Noun

## Definitions
1. N,N,N′,N′-tetramethyl-p-phenylenediamine, an easily oxidized phenylenediamine whose radical cation is a characteristic blue-violet colour.

## Etymology
Discovered by the German chemist Casimir Wurster (1854–1913).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/wurster-s-blue