718205

ISO 4581:1994

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

standard by International Organization for Standardization , 08/01/1994

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Full Description

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.

 

Product Details

Published:
08/01/1994
Number of Pages:
8
File Size:
1 file , 750 KB
Same As:
BS 2782-4:METHOD 453C:1996
Note:
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