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ISO 5518:1978

Fruits, vegetables and derived products — Determination of benzoic acid content — Spectrophotometric method ISO 5518:1978

Publication date:   May 1, 1978

95.99   Withdrawal of Standard   Jan 18, 2007

General information

95.99   Withdrawal of Standard   Jan 18, 2007

ISO

ISO/TC 34/SC 3 Fruits and vegetables and their derived products

International Standard

67.080.01   Fruits, vegetables and derived products in general

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Scope

The method consists in homogenizing the product, followed by dilution and acidification of a test portion, extraction of the acid by diethyl ether, then alkaline re-extraction of this acid and purifying by oxidation using acidified potassium dichromate, determination of the acid with a suitable spectrophotometer. The method cannot be applied in the presence of p-chlorobenzoic acid and cinnamic acid, respectively.

Life cycle

NOW

WITHDRAWN
ISO 5518:1978
95.99 Withdrawal of Standard
Jan 18, 2007

REVISED BY

ABANDON
ISO/CD 5518

PUBLISHED
ISO 5518:2007




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