ISO 4621:1986
p
ISO 4621:1986
10568

Abstract  Preview

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).


General information 

  •  :  Published
     : 1986-07
  •  : 1
     : 5
  •  : ISO/TC 256 Pigments, dyestuffs and extenders
  •  :
    87.060.10 Pigments and extenders

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std 2 38 Paper
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