Borrador del Comité
ISO/CD 8215
Surface active agents — Washing powders — Determination of total silica content — Gravimetric method
Reference number
ISO/CD 8215
ISO/CD 8215
Edition 2
© ISO 2025
Borrador del Comité
Resumen
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.
Ciclo de vida
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Anteriormente
PublicadoISO 8215:1985
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Ahora
