BS EN 14362-1:2012

Foreword
1 Scope
2 Normative references
3 General
4 Principle
5 Safety precautions
6 Reagents
7 Apparatus
8 Test specimen sampling and preparation
9 Procedure
10 Evaluation
11 Test report
Annex A (informative) - Chromatographic analyses
Annex B (informative) - Reliability of the method
Annex C (informative) - Assessment guide-interpretation
        of analytical results
Annex D (informative) - Explanatory table of dyestuffs
        used in various textile materials
Annex E (informative) - Procedure for liquid/liquid-extraction
        without diatomaceous earth
Annex F (normative) - Colorants - Methods for determination of
        certain aromatic amines
Bibliography

Specifies a procedure to detect the use of certain azo colorants that may not be used in the manufacture or treatment of certain commodities made of textile fibres and that are accessible to reducing agent with and without extraction.

This European Standard describes a procedure to detect the use of certain azo colorants that may not be used in the manufacture or treatment of certain commodities made of textile fibres and that are accessible to reducing agent with and without extraction.

Azo colorants accessible to reducing agent without extraction are those used to dye:

• cellulosic fibres (e.g. cotton, viscose);

• protein fibres (e.g. wool, silk);

• synthetic fibres (e.g. polyamide, acrylic).

Azo colorants accessible with extraction are those used to dye man-made fibres with disperse dyes. The following man-made fibres can be dyed with disperse dyes: polyester, polyamide, acetate, triacetate, acrylic and chlorofibre.

For certain commodities made of cellulose and/or protein fibres blended with man-made fibres it is necessary to extract the dye first.

The method is relevant for all coloured textiles, e.g. dyed, printed and coated textiles.