ISO 4621-1986 氧化铬绿颜料 规范和试验方法

标准号：ISO 4621-1986
中文标准名称：氧化铬绿颜料 规范和试验方法
英文标准名称：Chrome oxide green pigments; Specifications and methods of test
标准类型：G53
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G53
国际标准分类号：87.060.10
适用范围：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).