Surface active agents — Simplified classification
NORMA vydaná dňa 1.11.1972
Označenie normy: ISO 2131:1972
Dátum vydania normy: 1.11.1972
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: The simplified system enables the characteristics of the substances to be expressed by an abbreviated lettering and numbering system, consisting of one letter and four figures (five in the case of compounds comprising several hydrphilic groups). The letter designates the ionic character and figures correspond to the functional groups present in the molecule.