المعايير

Surface active agents -- Simplified classification

2018

رقم المستند: NL ISO 2131 : 2018
القطاع: Chemical Technology
TC: NL TC 91
ICS: 71.100.40
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.