ISO 4322:1977 PDF
Non-ionic surface active agents — Determination of sulphated ash — Gravimetric method
Non-ionic surface active agents — Determination of sulphated ash — Gravimetric method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 мая 1977 г.
- Издание:
- ISO IS 4322 edition 1 version 1
- ICS:
- 71.100.40
The method consists in calcination of a test portion in the presence of sulphuric acid solution and weighing of the ash in form of sulphate.
Abstract
Overview
ISO 4322:1977 - Non‑ionic surface active agents: Determination of sulphated ash (gravimetric method) specifies a laboratory gravimetric procedure to determine the content of non‑ionic surfactants. The method involves calcination of a measured test portion in the presence of sulphuric acid and subsequent weighing of the residue as sulphate. It is intended for routine quality control and compositional analysis of non‑ionic surface active agents.
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