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EVS-EN ISO 4320:2003

Non-ionic surface active agents - Determination of cloud point index - Volumetric method

General information

Valid from 01.04.2003
Base Documents
ISO 4320:1977 + Erratum:1980; EN ISO 4320:1997
ICS Groups
71.100.40 Surface active agents
Directives or regulations
None

Standard history

Status
Date
Type
Name
01.04.2003
Main
EVS-EN ISO 4320:2003
The determination is carried out by adding, at 30 degree Celsius, of distilled water to a propanol solution to the surface active agent until the appearance of cloudiness. The determination of the cloud point index provided a way of characterizing weakly alkoxylated derivates and their hydrocarbon hydrophobic groups. This simple and rapid measurement is a valuable means for checking the level of alkoxylation of non-ionic derivatives intended, for example, for sulphonation.

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Standard monitoring
English (PDF 103 KB)

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ISO 4316:1977

Surface active agents -- Determination of pH of aqueous solutions -- Potentiometric method
Newest version Valid from 01.08.1977

Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English