ISO 6225-2-1990 天然生胶 蓖麻油含量的测定 第2部分:蓖麻酸总含量的测定 气相色谱法

标准号：ISO 6225-2-1990
中文标准名称：天然生胶 蓖麻油含量的测定 第2部分:蓖麻酸总含量的测定 气相色谱法
英文标准名称：Rubber, raw, natural; determination of castor oil content; part 2: determination of total ricinoleic acid content by gas chromatography
标准类型：B72
发布日期：1999/12/31 12:00:00
实施日期：1990/12/1 12:00:00
中国标准分类号：B72
国际标准分类号：6838
适用范围：Applicable to all grades of natural rubber. The principle is based on extraction of any free ricinoleic acid and conversion to the acetate of methyl ricinoleate. Extraction of any castor oil glycerides also present, hydrolysis to ricinoleic acid, and conversion to the corresponding acetate of methyl ricinoleate. Determination of the total acetate by gas chromatography by comparison either with a ricinoleic acid standard, or with ricinoleic acid prepared by hydrolysis of a castor oil standard.