ISO 5518:1978 PDF
Fruits, vegetables and derived products — Determination of benzoic acid content — Spectrophotometric method
Название (английский):
ISO 5518:1978
Fruits, vegetables and derived products — Determination of benzoic acid content — Spectrophotometric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 5
- Дата публикации:
- 1 мая 1978 г.
- Издание:
- ISO IS 5518 edition 1 version 1
- ICS:
- 67.080.01
Описание (английский):
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.
Технические детали
- Технический комитет
- ISO/TC 34/SC 3 - Fruits and vegetables and their derived products
- SKU
- ISO 5518:1978