European Committee for Standardization

Textiles - Quantitative chemical analysis - Part 17: Mixtures of chlorofibres (homopolymers of vinyl chloride) and certain other fibres (method using sulfuric acid)
 N EN ISO 1833-17

Annotation

This part of ISO 1833 specifies a method, using sulfuric acid, to determine the percentage of chlorofibres, after removal of non-fibrous material, in textiles made of binary mixtures of

— chlorofibres based on homopolymers of vinyl chloride (after-chlorinated or not)

and

— cotton, viscose, cupro, modal, acetate, triacetate, polyamide, polyester, certain acrylic and certain modacrylic fibres. [The modacrylics concerned are those which give a limpid solution when immersed in concentrated sulfuric acid ( = 1,84 g/ml).]

This method can be used, particularly in place of the methods described in ISO 1833-12 and ISO 1833-13, in all cases where a preliminary test shows that the chlorofibres do not dissolve completely either in dimethylformamide or in the azeotropic mixture of carbon disulfide and acetone.

Автоматический перевод:

Текстиль - Количественный химический анализ - Часть 17: Смеси chlorofibres (гомополимеры винилхлорида) и определенные другие волокна (метод с помощью серной кислоты)

Эта часть ISO 1833 определяет метод, с помощью серной кислоты, для определения процента chlorofibres, после удаления неволокнистого материала, в текстиле, сделанном из двойных смесей