SS-EN-ISO-787-4 General methods of test for pigments and extenders - Part 4: Determination of acidity or alkalinity of the aqueous extract (ISO 787-4:1981)

SS-EN-ISO-787-4 - 2017 EDITION - CURRENT


Document Center Inc. is an authorized dealer of SIS standards.
The following bibliographic material is provided to assist you with your purchasing decision:


The principle of the method consists in the hot extraction of the material by following the procedure specified in ISO 787/3, to the stage of obtaining a perfectly clear filtrate. The determination is carried out with indicator solution (method A). If the solution with the methyl red indicator is yellow (alkaline), titrate it with the hydrochloric acid solution to an orange end-point; if the solution with the methyl red indicator is red (acid), titrate it with the sodium or potassium hydroxide solution to an orange end-point. The other method (method B) is the potentiometric determination. Take 100 ml of the test solution, insert the electrodes of the pH measuring device and read the pH value.

To find similar documents by classification:

87.060.10 (Pigments and extenders)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

ORDER

Price:

$80.37        




Designation Name

SS-EN ISO 787-4:2017

Revision Level

2017 EDITION

Status

Current

Publication Date

Nov. 21, 2017

Language(s)

English

Page Count

16

International Equivalent

EN ISO 787-4:2017(IDT); ISO 787-4:1981(IDT)