International Standard
ISO 120:1977
Plastics — Phenol-formaldehyde mouldings — Determination of free ammonia and ammonium compounds — Colorimetric comparison method
Reference number
ISO 120:1977
Edición 1
1977-10
International Standard
Vista previa
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ISO 120:1977
3922
No disponible en español
Publicado (Edición 1, 1977)
Esta norma se revisó y confirmó por última vez en 2020. Por lo tanto, esta versión es la actual.

ISO 120:1977

ISO 120:1977
3922
Formato
Idioma
CHF 42
Convertir Franco suizo (CHF) a tu moneda

Resumen

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.

Informaciones generales

  •  : Publicado
     : 1977-10
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 2
  • ISO/TC 61/SC 12
    83.080.10 
  • RSS actualizaciones

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