ISO 7327:1994
Current
The latest, up-to-date edition.
Plastics — Hardeners and accelerators for epoxide resins — Determination of free acid in acid anhydride
Hardcopy , PDF
English, French
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
|
| 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 |
| 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 |
| UNE-EN ISO 7327:1998 | 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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