Ссылочный номер
ISO 9397:1995
ISO 9397:1995
Plastics — Phenolic resins — Determination of free-formaldehyde content — Hydroxylamine hydrochloride method
Версия 2
1995-04
В время отменен
ISO 9397:1995
25123
Отозвано (Версия 2, 1995)

Тезис

Cancels and replaces the first edition (1989). Lays down a method of chemically determining free formaldehyde in phenolic resins by potentiometric titration, in aqueous or organic solution. The method is applicable to resins with free-formaldehyde contents up to and including 15 % (m/m). For free-formaldehyde contents between 15 % (m/m) and 30 % (m/m), it may be necessary to adjust the concentrations of the standard volumetric solutions used accordingly. This method must not be used in the presence of hexamethylenetetramine.

Общая информация

  •  : Отозвано
     : 1995-04
    : Отмена международного стандарта [95.99]
  •  : 2
  • ISO/TC 61/SC 12
    83.080.10 
  • RSS обновления

Жизненный цикл

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