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Homepage>BS ISO 7781:2017 Styrene-butadiene rubber, raw. Determination of soap and organic-acid content
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sklademVydáno: 2017-11-28
BS ISO 7781:2017 Styrene-butadiene rubber, raw. Determination of soap and organic-acid content

BS ISO 7781:2017

Styrene-butadiene rubber, raw. Determination of soap and organic-acid content

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Označení normy:BS ISO 7781:2017
Počet stran:20
Vydáno:2017-11-28
ISBN:978 0 580 96465 7
Status:Standard
DESCRIPTION

BS ISO 7781:2017


This standard BS ISO 7781:2017 Styrene-butadiene rubber, raw. Determination of soap and organic-acid content is classified in these ICS categories:
  • 83.040.10 Latex and raw rubber

This document specifies three methods for the determination of the soap and organic-acid content of raw styrene-butadiene rubber (SBR).

  • Method A is the titration method using indicator reagent.

  • Method B is the titration method using an automatic potentiometric titrator.

  • Method C is the back titration method using an automatic potentiometric titrator.

Since the soaps and organic acids present in the rubber are not single chemical compounds, the method gives only an approximate value for the soap and organic-acid content.