ISO 21627-1:2009 PDF

Plastics — Epoxy resins — Determination of chlorine content — Part 1: Inorganic chlorine

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Название (английский):

ISO 21627-1:2009

Plastics — Epoxy resins — Determination of chlorine content — Part 1: Inorganic chlorine

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 8 сентября 2009 г.
Издание:: ISO IS 21627 edition 2 version 1
ICS:: 83.080.10

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Описание (английский):

ISO 21627-1:2009 specifies a direct potentiometric method for the determination of inorganic chlorine in epoxy resins, also called “ionic chlorine”. The inorganic chlorine content is expressed in milligrams per kilogram of epoxy resin.

Технические детали

Технический комитет: ISO/TC 61/SC 12 - Thermosetting materials
SKU: ISO 21627-1:2009

Abstract

Overview

ISO 21627-1:2009 - Plastics - Epoxy resins - Determination of chlorine content - Part 1: Inorganic chlorine specifies a direct potentiometric titration method to measure inorganic chlorine (ionic chlorine, Cl−) in epoxy resins. Results are reported as milligrams of chlorine per kilogram of resin (mg/kg). This part is one of three in the ISO 21627 series covering inorganic, saponifiable and total chlorine in epoxy resins.

Key topics and requirements

Scope and definition
- Measures inorganic chlorine (chloride ion) in epoxy resins.
- Requires laboratory practices and safety awareness; uses analytical-grade reagents and water per ISO 3696.
Analytical principle
- Dissolve a representative sample in an appropriate solvent (acetone typical; alternatives: methyl ethyl ketone or THF if needed).
- Titrate directly with a 0.002 mol·L−1 silver nitrate (AgNO3) solution using potentiometric end-point detection with a combined silver/silver‑chloride electrode.
- Determine the end-point from the inflection of potential vs. volume curve.
Reagents and apparatus
- Analytical reagents (acetone, isopropanol, glacial acetic acid), AgNO3 titrant prepared and calibrated, microburette, potentiometer/titrator, combined Ag/AgCl electrode, analytical balance (0.1 mg), magnetic stirrer.
Calculation and reporting
- Content calculated from titrant volume, titrant concentration, and sample mass; results rounded to one decimal place (mg/kg).
- Test report must include reference to ISO 21627-1, sample identification, solvent used (if not acetone), test results and date.
Performance (fidelity)
- Repeatability and reproducibility established by an interlaboratory study (10 labs). Example reproducibility (R) values: 0.13 mg/kg for w(Cl)

Overview

Key topics and requirements

Scope and definition
- Measures inorganic chlorine (chloride ion) in epoxy resins.
- Requires laboratory practices and safety awareness; uses analytical-grade reagents and water per ISO 3696.
Analytical principle
- Dissolve a representative sample in an appropriate solvent (acetone typical; alternatives: methyl ethyl ketone or THF if needed).
- Titrate directly with a 0.002 mol·L−1 silver nitrate (AgNO3) solution using potentiometric end-point detection with a combined silver/silver‑chloride electrode.
- Determine the end-point from the inflection of potential vs. volume curve.
Reagents and apparatus
- Analytical reagents (acetone, isopropanol, glacial acetic acid), AgNO3 titrant prepared and calibrated, microburette, potentiometer/titrator, combined Ag/AgCl electrode, analytical balance (0.1 mg), magnetic stirrer.
Calculation and reporting
- Content calculated from titrant volume, titrant concentration, and sample mass; results rounded to one decimal place (mg/kg).
- Test report must include reference to ISO 21627-1, sample identification, solvent used (if not acetone), test results and date.
Performance (fidelity)
- Repeatability and reproducibility established by an interlaboratory study (10 labs). Example reproducibility (R) values: 0.13 mg/kg for w(Cl)

ISO 21627-1:2009 PDF

Технические детали

Abstract

Overview

Key topics and requirements

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Abstract

Overview

Key topics and requirements

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