ISO 2870:2009 PDF

Name: ISO 2870:2009 — Surface active agents — Detergents — Determination of anionic-active matter hydrolysable and non-hydrolysable under acid conditions
SKU: ISO 2870:2009
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Surface active agents — Detergents — Determination of anionic-active matter hydrolysable and non-hydrolysable under acid conditions

Название (английский):

ISO 2870:2009

Surface active agents — Detergents — Determination of anionic-active matter hydrolysable and non-hydrolysable under acid conditions

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 11 февраля 2009 г.
Издание:: ISO IS 2870 edition 3 version 1
ICS:: 71.100.40

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Описание (английский):

ISO 2870:2009 specifies a method for the determination, in detergents, of anionic-active matter hydrolyzable and non-hydrolyzable under acid conditions. This active matter includes alkyl sulfates and hydroxysulfates and alkylphenol and fatty alcohol ethoxysulfates.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 2870:2009 - "Surface active agents - Detergents - Determination of anionic-active matter hydrolysable and non-hydrolysable under acid conditions" - specifies a laboratory method to quantify anionic-active matter in detergents that is hydrolysable or non‑hydrolysable under acidic conditions. The scope covers common anionic surfactants such as alkyl sulfates, alkyl hydroxysulfates, and alkylphenol/fatty‑alcohol ethoxysulfates. Results are expressed in mmol/100 g (or converted to mass percent when molecular weight is known).

Key topics and technical requirements

Principle: Two-part analysis - titration of an aliquot for total anionic-active matter, and acid hydrolysis (reflux) of a second aliquot followed by titration to determine non‑hydrolysable fraction. Hydrolysable content = total − non‑hydrolysable.

Titration methods: Use either the two‑phase visual/manual or mechanical titration (ISO 2271) or the potentiometric two‑phase titration (EN 14480).

Hydrolysis: Reflux an aliquot with sulfuric acid (solution c(H2SO4) = 490 g/L) for 3 hours. If oxidants are present, destroy them first with sodium sulfite (c(Na2SO3) = 20 g/L).

Reagents and solutions: Key reagents specified include benzethonium chloride (Hyamine 1622) volumetric solution (0.004 mol/L) for titration, phenolphthalein indicator, NaOH solutions for neutralization, and analytical‑grade water (ISO 3696).

Apparatus: Standard lab equipment plus a 250 mL conical flask, reflux condenser with ground glass joints.

Calculations and expression: Results calculated in mmol/100 g using titrant volume and concentration; hydrolysable fraction derived by subtraction.

Performance: Repeatability limit: difference between duplicate determinations by same analyst ≤ 2% of mean. Reproducibility limit between labs ≤ 4% of mean.

Sampling and reporting: Sample preparation per ISO 607; test report must reference ISO 2870 and include sample ID, methods used, results and any deviations.

Applications and users

Quality control and production labs at detergent and surfactant manufacturers to monitor product composition.

Environmental and regulatory testing where distinction between hydrolysable and non‑hydrolysable anionic surfactants is required.

R&D and formulation laboratories assessing stability and degradability of anionic surfactants.

Third‑party testing and certification bodies performing compliance testing.

Related standards

ISO 2271 - Two‑phase titration for total anionic-active matter (manual/mechanical)

EN 14480 - Potentiometric titration in two phases

ISO 3696 - Water for laboratory use

ISO 607 - Sample preparation and division

Keywords: ISO 2870:2009, anionic-active matter, detergents, acid hydrolysis, potentiometric titration, two-phase titration, benzethonium chloride, alkyl sulfates, ethoxysulfates.

ISO 2870:2009 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

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