Plastics Hardeners and accelerators for epoxide resins Determination of free acid in acid anhydride

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

23-06-1994

Publisher

International Organization for Standardization

The principle of the method specified is reacting a small amount of free acid present in a test portion of acid anhydride hardener or accelerator with rhodamine 6G to colour the test solution pink, measuring the absorbance of the coloured solution at a wavelength of about 510 nm using a spectrometer, determining the free-acid content from a calibration curve. The method is suitable for most anhydrides except for polyester and oligomeric anhydrides which may give too wide a scatter of results.

DocumentType	Standard
Pages	3
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
NBN EN ISO 7327 : 1997	Identical
NEN EN ISO 7327 : 1997	Identical
NS EN ISO 7327 : 1ED 1997	Identical
I.S. EN ISO 7327:1998	Identical
PN EN ISO 7327 : 2002	Identical
SN EN ISO 7327 : 1998	Identical
UNI EN ISO 7327 : 2000	Identical
UNE-EN ISO 7327:1998	Identical
BS 2782-4.433E(1996) : AMD 9699	Identical
BS EN ISO 7327:1997	Identical
EN ISO 7327 : 1997	Identical
NF EN ISO 7327 : 1997	Identical
DIN EN ISO 7327:1997-11	Identical

09/30192396 DC : DRAFT APR 2009	BS ISO 18280 - PLASTICS - EPOXY RESINS - TEST METHODS
ISO/IEC TR 14252:1996	Information technology — Guide to the POSIX Open System Environment (OSE)
00/120623 DC : DRAFT FEB 2000	ISO/CD 18280 - EPOXIDE RESINS - DEFINITIONS AND TEST METHODS
BS ISO/IEC TR 14252:1996	Information technology. Guide to the POSIX open system environment (OSE)
BS ISO 18280:2010	Plastics. Epoxy resins. Test methods
ISO 18280:2010	Plastics Epoxy resins Test methods

ISO 760:1978

Determination of water Karl Fischer method (General method)

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ISO 7327:1994

Current

Abstract

General Product Information

International Equivalents

Standards Referenced By This Book

Standards Referencing This Book

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