Reference number
ISO 935:1988
ISO 935:1988
© ISO 2024
International Standard
ISO 935:1988
Animal and vegetable fats and oils — Determination of titre
Edition 1
1988-01
1988-01
ISO 935:1988
5354
Publicado
(Edición 1, 1988)
Esta publicación se revisó y confirmó por última vez en 2023.
Por lo tanto, esta versión es la actual.
Resumen
Specifies a method for the preparation of the water-insoluble fatty acide and determination of their solidification temperature. The method is not applicable to titres below 30 degrees centigrade. The principle is saponification of a test portion with potassium hydroxide solution in glycerol, dissolution of the soap in water and neutralization. Washing of the separated insoluble fatty acids with hot sodium chloride solution, drying and filtering. Melting of the prepared fatty acids, cooling them, with continuous stirring, and observation of the solidification temperature.
Informaciones generales
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Estado: PublicadoFecha de publicación: 1988-01Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 3
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Comité Técnico :ISO/TC 34/SC 11ICS :67.200.10
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