- Category : 1877-births
- Type : GE
- Profile : 3/5 - Martyr / Heretic
- Definition : Triple Split
- Incarnation Cross : RAX Service 1
German chemist who investigated the relationship between the chemical structure and colours of organic compounds, for example triphenylmethane dyes and azo dyestuffs, later on quinones and flower dyes.
He died on 24 June 1955 in Zülpich, aged 78.