0 Stavka
Moj nalog
Telefon: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Prodaja standarda: prodaja@iss.rs Seminari, obuke: iss-edukacija@iss.rs Informacije o standardima: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Glavni meni

ISO 5518:1978

Fruits, vegetables and derived products — Determination of benzoic acid content — Spectrophotometric method
1. 5. 1978.
95.99   Povučen   18. 1. 2007.

Опште информације

95.99     18. 1. 2007.

ISO

ISO/TC 34/SC 3

Međunarodni standard

67.080.01  

francuski   engleski  

Kupovina

Povučen

Jezik na kome želite da primite dokument.

Apstrakt

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.

Životni ciklus

TRENUTNO

POVUČEN
ISO 5518:1978
95.99 Povučen
18. 1. 2007.

REVIDIRAN OD

NAPUŠTEN
ISO/CD 5518

OBJAVLJEN
ISO 5518:2007