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ISO 4621:1986

Chrome oxide green pigments — Specifications and methods of test

Jul 17, 1986

General information

90.93     Oct 27, 2023

ISO

ISO/TC 256

International Standard

87.060.10  

French   English  

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Scope

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).

Life cycle

NOW

PUBLISHED
ISO 4621:1986
90.93 Standard confirmed
Oct 27, 2023

National adoptions

SRPS ISO 4621:2015  
ISS

Chrome oxide green pigments — Specifications and methods of test

90.93   Standard confirmed

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