ISO 6835:1981 PDF
Surface active agents — Washing powders — Determination of total boron content — Titrimetric method
Surface active agents — Washing powders — Determination of total boron content — Titrimetric method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 3
- Дата публикации:
- 1 апреля 1981 г.
- Издание:
- ISO IS 6835 edition 1 version 1
- ICS:
- 71.100.40
From an aqueous aolution of a sample the phosphates are removed by passing the solution over an ion-exchange resin. Then a boric acid mannitol complex is formed and titrated.
Abstract
Overview
ISO 6835:1981 specifies a titrimetric method for the rapid determination of total boron in commercial washing powders (surface‑active agents/detergents). The procedure eliminates phosphate interference by passing an aqueous sample extract through an anion‑exchange resin, converts boron to a , and determines boron by titration with a standardized sodium hydroxide solution. The standard was prepared by ISO/TC 91 and approved by IUPAC.
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