ISO/TC 91 Grenzflächenaktive Stoffe,
ISO/TC 91 Surface active agents,
ISO/TC 91 Agents de surface,
ISO Internationale Organisation für Normung,
ISO International Organization for Standardization,
ISO Organisation Internationale de Normalisation
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Media type:
Standard
Title:
ISO 8215
:
Surface active agents; Washing powders; Determination of total silica content; gravimetric method
Other titles:
Grenzflächenaktive Stoffe; Waschpulver; Bestimmung des Gesamt-Siliziumgehaltes; gravimetrische Methode
Agents de surface; Poudres à laver; Dosage de la silice totale; Méthode gravimétrique
Footnote:
Internationale Übereinstimmung mit: BS 3762-3.21 (1986-09-30) - identisch; GB/T 15816 (1995) - nicht äquivalent; NF T73-706 (1986-08-01) - identisch; JIS K 3362 (1998-10-31) - modifiziert; PN-ISO 8215 (2000-08-11) - identisch; UNE 55837 (1987-04-15) - identisch; KS M ISO 8215 (2007-04-30) - identisch; TS 8016 (1990-02-27) - identisch; NBN T 63-160 (1987) - identisch; NEN-ISO 8215 (1986) - identisch; CSN 68 1154 (1994-11-01) - nicht äquivalent; NEN-ISO 8215:1986 en (1986-08-01) - identisch
Description:
From a test portion all ethanol-soluble matter is removed by extraction with ethanol. The solution of the ethanol-insoluble residue is treated with hydrochloric acid and evaporated to dryness. The residue is dissolved in water and the operations are repeated twice. From the solution obtained after this operations the precipitate is filtered, washed, heated to 900 °C and weighed.