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ISO 4581:1994

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

Jul 21, 1994

General information

90.93     Sep 3, 2021

ISO

ISO/TC 61/SC 9

International Standard

83.080.20  

French   English  

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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

Revises
ISO 4581:1987

NOW

PUBLISHED
ISO 4581:1994
90.93 Standard confirmed
Sep 3, 2021

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