Regulation (EU) No 1007/2011 of the European Parliament and of the Council of 27 September 2011 on textile fibre names and related labelling and marking of the fibre composition of textile products and repealing Council Directive 73/44/EEC and Directives 96/73/EC and 2008/121/EC of the European Parliament and of the Council (Text with EEA relevance) (c. 1007)

ANNEX VIII U.K. Methods for the quantitative analysis of binary and ternary textile fibre mixtures (referred to in Article 19(1))

CHAPTER 2 U.K.

METHODS FOR QUANTITATIVE ANALYSIS OF CERTAIN BINARY TEXTILE FIBRE MIXTURES U.K.

IV. Special methods U.K.

METHOD No 1 U.K. ACETATE AND CERTAIN OTHER FIBRES U.K.(Acetone method) U.K.

1. FIELD OF APPLICATION U.K.

This method is applicable, after removal of non-fibrous matter, to binary fibre mixtures of:

1.

acetate (19)

with

2.

[F1 wool (1), animal hair (2 and 3), silk (4), cotton (5), flax (7) true hemp (8), jute (9), abaca (10), alfa (11), coir (12), broom (13), ramie (14), sisal (15), cupro (21), modal (22), protein (23), viscose (25), acrylic (26), polyamide or nylon (30), polyester (35), polypropylene (37), elastomultiester (45), elastolefin (46), melamine (47), polypropylene/polyamide bicomponent (49) and polyacrylate (50).

In no circumstances is the method applicable to acetate fibres which have been deacetylated on the surface.]

Textual Amendments

F1 Substituted by Commission Delegated Regulation (EU) 2018/122 of 20 October 2017 amending Annexes I, II, VI, VIII and IX to Regulation (EU) No 1007/2011 of the European Parliament and of the Council on textile fibre names and related labelling and marking of the fibre composition of textile products (Text with EEA relevance).

2. PRINCIPLE U.K.

The acetate is dissolved out from a known dry mass of the mixture, with acetone. The residue is collected, washed, dried and weighed; its mass, corrected if necessary, is expressed as a percentage of the dry mass of the mixture. The percentage of dry acetate is found by difference.

3. APPARATUS AND REAGENTS (additional to those specified in the general instructions) U.K.

3.1. Apparatus U.K.

Glass-stoppered conical flasks of at least 200 ml capacity.

3.2. Reagent U.K.

Acetone.

4. TEST PROCEDURE U.K.

Follow the procedure described in the general instructions and proceed as follows:

To the test specimen contained in a glass-stoppered conical flask of at least 200 ml capacity, add 100 ml of acetone per gram of test specimen, shake the flask, stand it for 30 minutes at room temperature, stirring from time to time, and then decant the liquid through the weighed filter crucible.

Repeat the treatment twice more (making three extractions in all), but for periods of 15 minutes only, so that the total time of treatment in acetone is 1 hour. Transfer the residue to the filter crucible. Wash the residue in the filter crucible with acetone and drain with suction. Refill the crucible with acetone and allow to drain under gravity.

Finally, drain the crucible with suction, dry the crucible and residue, and cool and weigh them.

[F1 5. CALCULATION AND EXPRESSION OF RESULTS U.K.

Calculate the results as described in the general instructions. The value of ‘ d ’ is 1,00, except for melamine and polyacrylate, for which ‘ d ’ is 1,01.]

6. PRECISION U.K.

On a homogeneous mixture of textile materials, the confidence limits of results obtained by this method are not greater than ± 1 for a confidence level of 95 %.