ISO 3704:1976

Status : Published (Under review)

This standard was last reviewed and confirmed in 2019. Therefore this version remains current.

	Format	Language
std 1 40	PDF
std 2 40	Paper

CHF40

Convert Swiss francs (CHF) to your currency

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.

General information

Status
: Published

Publication date
: 1976-09

Stage
: International Standard confirmed [90.93]
Edition
: 1

Number of pages
: 2
Technical Committee :
ISO/TC 47

ICS :
71.060.10
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