标准摘要
[中文适用范围]： 适用于所有牌号的天然橡胶。 其原理是基于提取任何游离蓖麻油酸并转化为蓖麻油酸甲酯的乙酸酯。 还提取任何蓖麻油甘油酯，水解为蓖麻油酸，并转化为相应的蓖麻油酸甲酯的乙酸酯。 通过与蓖麻油酸标准品或与蓖麻油标准品水解制备的蓖麻油酸进行比较，通过气相色谱法测定总乙酸盐。 [外文原描述]： 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.
英文名称Rubber, raw, natural — Determination of castor oil content — Part 2: Determination of total ricinoleic acid content by gas chromatography