Standard

ISO 3704:1976

Sep 1976 Published

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Abstract

Applicable to products having acidities, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Describes the extraction of acidic substances with a mixture of water and propan-2-ol (isopropyl alcohol). Titration of the extract with standard volumetric sodium hydroxide solution in the presence of phenolphthalein as indicator. The preparation of the sample from the laboratory sample is carried out by grinding a sufficient quantity of the undried material until it passes through a sieve of nominal mesh of 250 m.

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Standard from ISO
Published: 1 September 1976
Edition: 1
Document type: IS
ISBN:

Publisher ISO
Distributor ISO
ICS 71.060.10
ISO TC ISO/TC 47

ISO 3704:1976

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