ISO 5518:1978

Fruits, vegetables and derived products — Determination of benzoic acid content — Spectrophotometric method

Publication date: 1 maj 1978

95.99 Withdrawal of Standard 18 jan 2007

General information

Current stage: 95.99 Effective date: 18 jan 2007

Originator: ISO

Owner: ISO/TC 34/SC 3

Type: International Standard

ICS: 67.080.01

Gjuha: frëngjisht anglisht

Buying

Statusi: Shfuqizuar

PDF - 7 123 Lekë

Paper - 7 123 Lekë

CD - 7 123 Lekë

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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WITHDRAWN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
18 jan 2007

REVISED BY

ABANDON
ISO/CD 5518

PUBLISHED
ISO 5518:2007