# Third Commission Directive of 27 September 1983 on the approximation of the laws of the Member States relating to methods of analysis necessary for checking the composition of cosmetic products (83/514/EEC), Division 4.1.2.2: Characterization of inorganic sulphides by the formulation of hydrogen sulphide on acidification

Extent: E+W+S+N.I.

Introduce, into a test tube, a few milligrams of the sample to be studied. Add 2 ml of distilled water and 1 ml of hydrochloric acid (4.1.1.2). Hydrogen sulphide, recognizable by its smell, is evolved and a black lead sulphide precipitate forms on the lead di(acetate) paper (4.1.1.1).
Sensitivity: 50 ppm.

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Source: https://www.legislation.gov.uk/eudr/1983/514/annex/division/14/division/4/division/4.1/division/4.1.2/division/4.1.2.2 (the official version)
Page: https://openlegislation.uk/eu-directive-1983-514/annex/division-14/division-4/division-4.1/division-4.1.2/division-4.1.2.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.