Resumen
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.
Informaciones generales
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Estado: RetiradaFecha de publicación: 1995-04Etapa: Retirada de la Norma Internacional [95.99]
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Edición: 2Número de páginas: 3
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Comité Técnico :ISO/TC 61/SC 12ICS :83.080.10
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Ciclo de vida
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Anteriormente
RetiradaISO 9397:1989
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Ahora
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Revisada por
PublicadoISO 11402:2004