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SRPS ISO 4581:2024

Plastics — Styrene/acrylonitrile copolymers — Determination of residual acrylonitrile monomer content — Gas chromatography method

Sep 30, 2024
Sep 30, 2024

General information

90.93     Sep 3, 2021

90.20    Jul 15, 2026

ISS

G061

International Standard

83.080.20  

Serbian  

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Scope

The principle of the method specified is dissolving a test portion in dimethylformamide and injecting a small volume of the solution into a gas chromatograph equipped with flame ionization detector to separate and detect the volatile components. The solvent contains a known amount of propionitrile or acetonitrile as an internal standard for quantitative evaluation. With this method, a lower detection limit of the order of 3 ppm of acrylonitrile in the copolymer may be expected. To obtain a lower detection limit of the order of 0,3 ppm to 0,4 ppm, an alternative method is specified in annex A.

Life cycle

PREVIOUSLY

WITHDRAWN
SRPS ISO 4581:1992

NOW

PUBLISHED
SRPS ISO 4581:2024
90.93 Standard confirmed
Sep 3, 2021

Related project

Adopted from ISO 4581:1994