Plastics — Polymer polyols for use in the production of polyurethane — Determination of the residual acrylonitrile and styrene monomer content by gas chromatography

This document specifies a method for the determination of the residual acrylonitrile monomer and styrene monomer in polymer polyols by gas chromatography.

Titre manque

General Information

Status
Published
Publication Date
02-Oct-2018
Current Stage
9092 - International Standard to be revised
Completion Date
08-May-2024
Ref Project

Relations

Buy Standard

Standard
ISO 21257:2018 - Plastics -- Polymer polyols for use in the production of polyurethane -- Determination of the residual acrylonitrile and styrene monomer content by gas chromatography
English language
15 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21257
First edition
2018-10
Plastics — Polymer polyols for use
in the production of polyurethane
— Determination of the residual
acrylonitrile and styrene monomer
content by gas chromatography
Reference number
ISO 21257:2018(E)
©
ISO 2018

---------------------- Page: 1 ----------------------
ISO 21257:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 21257:2018(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents and materials . 2
6 Apparatus . 2
7 Preparation of calibration solution and sample solution . 3
7.1 General . 3
7.2 Method A for using OT column . 3
7.2.1 Preparation of internal standard solution . 3
7.2.2 Preparation of calibration solutions . 3
7.2.3 Preparation of sample solution . 4
7.3 Method B for using packed column . 4
7.3.1 Preparation of internal standard solution . 4
7.3.2 Preparation of calibration solutions . 4
7.3.3 Preparation of sample solution . 4
8 Procedure. 5
8.1 Gas chromatographic procedure .
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.