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ISO 4581:1994

Plastics — Styrene/acrylonitrile copolymers — Determination of residual acrylonitrile monomer content — Gas chromatography method
21. 7. 1994.

Опште информације

90.93     3. 9. 2021.

ISO

ISO/TC 61/SC 9

Međunarodni standard

83.080.20  

francuski   engleski  

Kupovina

Objavljen

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Apstrakt

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.

Životni ciklus

PRETHODNO

POVUČEN
ISO 4581:1987

TRENUTNO

OBJAVLJEN
ISO 4581:1994
90.93 Odluka o potvrđivanju standarda
3. 9. 2021.

Nacionalna preuzimanja

SRPS ISO 4581:2024  
ISS

Plastične mase – Stiren/akrilonitrilni kopolimeri – Određivanje sadržaja zaostalog akrilonitrilnog monomera – Metoda gasne hromatografije

90.93   Odluka o potvrđivanju standarda

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