ISO 6225-2:1990

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

Publication date: 15 nën 1990

General information

Current stage: 90.93 Effective date: 11 qer 2020

Originator: ISO

Owner: ISO/TC 45/SC 3

Type: International Standard

ICS: 83.040.10

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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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

Revises
ISO 6225-2:1983

NOW

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

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