ISO 120:1977
Plastics — Phenol-formaldehyde mouldings — Determination of free ammonia and ammonium compounds — Colorimetric comparison method
OVERVIEW
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.
COMMENTS
-
PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 1977 |
| No. of Pages | 2 |
| ICS Classification | 83.080.10 Thermosetting materials |
| Committee | ISO/TC 61/SC 12 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |