International Standard
ISO 4621:1986
Chrome oxide green pigments — Specifications and methods of test
Reference number
ISO 4621:1986
ISO 4621:1986
Edición 1
1986-07
1986-07
© ISO 2024
International Standard
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ISO 4621:1986
10568
No disponible en español
Publicado
(Edición 1, 1986)
Esta norma se revisó y confirmó por última vez en 2023.
Por lo tanto, esta versión es la actual.
Resumen
Specifies three grades, which shall not be in admixture with other colouring matter of organic or inorganic nature and shall be free from extenders. The pigment consists essentially of chromium(III) oxide (Cr2O3) in the form of a dry powder. Grade 1, these pigments shall contain a residue on a sieve of 45 nm mesh aperture of not more than 0,01 % (m/m); grade 2, under the same conditions, shall contain a residue of more than 0,01 % (m/m) and not more than 0,1 % (m/m) and grade 3 shall contain a residue of more than 0,1 % (m/m) and not more than 0,5 % (m/m).
Informaciones generales
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Estado: PublicadoFecha de publicación: 1986-07Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 5
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Comité Técnico :ISO/TC 256ICS :87.060.10
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