ISO 7327:1994
p
ISO 7327:1994
14003

Abstract

 Preview

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.


General information 

  •  :  Published
     : 1994-07
  •  : 1
     : 3
  •  : ISO/TC 61/SC 12 Thermosetting materials
  •  :
    83.080.10 Thermosetting materials

Buy this standard

en
Format Language
std 1 38 PDF
std 2 38 Paper
  • CHF38

Life cycle


Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.