Plastics - Determination of ash - Part 3: Unplasticized cellulose acetate (ISO 3451-3:1984, IDT)
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SS-ISO 3451-3:2011
Plastics - Determination of ash - Part 3: Unplasticized cellulose acetate (ISO 3451-3:1984, IDT)
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1.1 This part of ISO 3451 specifies a method for determining the ash, consisting of inorganic residue, yielded by unplasticized cellulose acetate.1.2 This method applies to unplasticized acetate free of additives, fillers, dyes or other materials which may affect the result.1.3 When plasticizers, additives, fillers or dyes which may affect the result are present, they shall be separated by a method agreed between the interested parties.1.4 The ash content at 575 ± 25 °C is a reasonable measure of the mineral salts and inorganic foreign matter in the cellulose acetate. The weight of ash obtained varies with the temperature of ignition. Higher temperatures such as 850 °C will convert calcium carbonate and other carbonates to the oxides and thus give lower values for the ash. The composition of ash may vary with the pulping process used in manufacture, which limits the significance of the ash determination in absolute terms.
Plastics - Determination of ash - Part 3: Unplasticized cellulose acetate (ISO 3451-3:1984, IDT)
Prenumerera på standarder med tjänst SIS Abonnemang. Genom att prenumerera får du effektiv åtkomst till gällande standarder och säkerställer att ditt företag alltid har tillgång till senaste utgåvan.
Läs mer om SIS Abonnemang