Norm

NEN-EN-ISO 8988:2006 en

Kunststoffen - Fenolharsen - Bepaling van het hexamethyleentetraminegehalte - Kjeldahl methode, methode met perchloorzuur en methode met zoutzuur

52,53

Over deze norm

Status Definitief
Aantal pagina's 7
Commissie Kunststoffen
Gepubliceerd op 01-09-2006
Taal Engels
This International Standard specifies three methods for the determination of the hexamethylenetetramine ("hexa") content of phenolic resins. The three methods are equivalent. The Kjeldahl method described in Clause 3 is not applicable if there are other components containing nitrogen in the phenolic resin. The perchloric acid method and the hydrochloric acid method described in Clause 4 and Clause 5, respectively, are only applicable if there are no other basic or acidic additives in the resin. If the resin contains additives which can be oxidized by perchloric acid, only the hydrochloric acid method (Clause 5) is applicable.

Details

ICS-code 83.080.10
Nederlandse titel Kunststoffen - Fenolharsen - Bepaling van het hexamethyleentetraminegehalte - Kjeldahl methode, methode met perchloorzuur en methode met zoutzuur
Engelse titel Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method
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