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ISO 7327:1994 PDF

ISO 7327:1994 PDF

Name:
ISO 7327:1994 PDF

Published Date:
07/01/1994

Status:
Active

Description:

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

Publisher:
International Organization for Standardization

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
SKU:
Choose Document Language:
$16.2
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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.


File Size : 1 file , 290 KB
Note : This product is unavailable in Ukraine, Russia, Belarus
Number of Pages : 3
Published : 07/01/1994
Same As : ISO 7327:1994

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