Active standard | Published: 01/10/1984

ISO 3856-5:1984-ed.2.0

Paints and varnishes — Determination of "soluble" metal content — Part 5: Determination of hexavalent chromium content of the pigment portion of the liquid paint or the paint in powder form — Diphenylcarbazide spectrophotometric method
(Peintures et vernis — Détermination de la teneur en métaux "solubles" — Partie 5: Détermination du chrome hexavalent contenu dans le pigment de la peinture liquide ou de la peinture en poudre — Méthode spectrophoto- métrique a la diphénylcarbazide)

Available languages: English, French

Available design: electronic design (pdf), Print design

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Detail information

Designation: ISO 3856-5:1984-ed.2.0

Publication date: 01/10/1984

Pages: 3

Country: International technical standard

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Anotation

Description / Abstract: The principle consists in formation of a coloured complex from hexavalent chromium and diphenylcarbazide solution. After addition of orthophosphoric acid and sulfuric acid, spectralphotometric easurement of the colour at a wavelength in the region of 540 nm. The method is applicable to coating materials having hexavalent chromium contents in the range of about 0,05 % (m/m) to 5 % (m/m). This method id the referee method in cases of dispute. This second edition cancels and replaces the ISO 3856/5-1980, of which it constitutes a through revision.

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