Standard

NS-EN ISO 7327:1997

Nov 1997 Published

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Language English

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Abstract

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.

Document information

Standard from SN
Published: 12 November 1997
Edition: 1
Version: 1
Document type: NAT
ISBN:

ICS 83.080.10
National Committee SN/K 609

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Adopted from: EN ISO 7327:1997 , 0

NS-EN ISO 7327:1997

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Abstract

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Abstract

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