EN ISO 120:1998
Current
Current
Plastics - Phenol-formaldehyde mouldings - Determination of free ammonia and ammonium compounds - Colorimetric comparison method (ISO 120:1977)
Published date
07-22-1998
Publisher
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FOREWORD
1 SCOPE AND FIELD OF APPLICATION
2 REFERENCES
3 PRINCIPLE
4 REAGENTS
5 APPARATUS
6 PREPARATION OF TEST SAMPLE
7 PROCEDURE
8 EXPRESSION OF RESULTS
9 TEST REPORT
Specification of a semi-quantitative method. The content of free ammonia in a moulded article is of importance, when corrosion of metal inserts or contamination in contact with the article has to be considered. Distillation of the aqueous extract from a powdered test portion, coloration of the distillate by reaction with Nessler reagent and comparison of the colour with that of standard matching solutions.
| Committee |
CEN/TC 249
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| NBN EN ISO 120 : 1998 | Identical |
| DIN EN ISO 120:1998-10 | Identical |
| ISO 120:1977 | Identical |
| PN EN ISO 120 : 2003 | Identical |
| I.S. EN ISO 120:1998 | Identical |
| NS EN ISO 120 : 1ED 1998 | Identical |
| NEN EN ISO 120 : 1998 | Identical |
| BS EN ISO 120:1998 | Identical |
| NF EN ISO 120 : 1998 | Identical |
| UNE-EN ISO 120:1999 | Identical |
Sorry this product is not available in your region.