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ISO 4901:1985

Reinforced plastics based on unsaturated polyester resins — Determination of residual styrene monomer content

Sep 19, 1985
95.99   Withdrawal of Standard   Aug 9, 2011

General information

95.99     Aug 9, 2011

ISO

ISO/TC 61/SC 12

International Standard

83.120  

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Scope

The residual styrene monomer content in reinforced plastics based on unsaturated polyester (UP) resins is an important criterion in evaluating the degree of cure of UP resins in the polymerized state. The determination is carried out by extraction of the residual monomer styrene from the UP resin in the polymerized state using dichloromethane and subsequent gaschromatographic analysis of the extract with n-butyl-benzene as internal standard. An alternative method of determining the residual styrene monomer by the Wijs method is also specified.

Life cycle

NOW

WITHDRAWN
ISO 4901:1985
95.99 Withdrawal of Standard
Aug 9, 2011

REVISED BY

ABANDON
ISO/WD 4901

PUBLISHED
ISO 4901:2011