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ISO 7327:1994

Current

Current

The latest, up-to-date edition.

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

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

23-06-1994

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.

Committee
ISO/TC 61/SC 12
DocumentType
Standard
Pages
3
PublisherName
International Organization for Standardization
Status
Current

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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