Reference number
ISO 3856-5:1984
ISO 3856-5:1984
© ISO 2024
International Standard
ISO 3856-5:1984
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
Edition 2
1984-10
1984-10
ISO 3856-5:1984
9430
Publicado
(Edición 2, 1984)
Esta publicación se revisó y confirmó por última vez en 2023.
Por lo tanto, esta versión es la actual.
Resumen
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.
Informaciones generales
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Estado: PublicadoFecha de publicación: 1984-10Etapa: Norma Internacional confirmada [90.93]
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Edición: 2Número de páginas: 3
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Comité Técnico :ISO/TC 256ICS :87.040
- RSS actualizaciones
Ciclo de vida
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Anteriormente
RetiradaISO 3856-5:1980
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Ahora