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ISO 6225-2:1990

Rubber, raw, natural — Determination of castor oil content — Part 2: Determination of total ricinoleic acid content by gas chromatography ISO 6225-2:1990

Publication date:   Nov 15, 1990

General information

90.93 Standard confirmed   Jun 11, 2020

ISO

ISO/TC 45/SC 3 Raw materials (including latex) for use in the rubber industry

International Standard

83.040.10   Latex and raw rubber

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Published

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 6225-2:1983

NOW

PUBLISHED
ISO 6225-2:1990
90.93 Standard confirmed
Jun 11, 2020