BS ISO 7781:2017
$102.76
Styrene-butadiene rubber, raw. Determination of soap and organic-acid content
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 20 |
This document specifies three methods for the determination of the soap and organic-acid content of raw styrene-butadiene rubber (SBR).
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Method A is the titration method using indicator reagent.
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Method B is the titration method using an automatic potentiometric titrator.
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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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle |
| 8 | 5 Reagents 6 Apparatus |
| 9 | 7 Sampling and sample preparation 8 Procedure 8.1 Preparation of the test solution 8.2 Method A — Titration method using indicator reagent 8.2.1 Procedure for determination of soap content 8.2.2 Procedure for determination of organic-acid content |
| 10 | 8.3 Method B — Titration method using automatic potentiometric titrator 8.3.1 Procedure for determination of soap content 8.3.2 Procedure for determination of organic-acid content 8.4 Method C — Back titration method using automatic potentiometric titrator 8.4.1 Preparation |
| 12 | 8.4.2 Sample titration procedure 8.4.3 Blank titration procedure 8.4.4 Determination of equivalence points 9 Expression of results 9.1 Soap content |
| 13 | 9.2 Organic-acid content |
| 14 | 10 Precision data 11 Test report |
| 15 | Annex A (informative) Test for rosin |
| 16 | Annex B (informative) Precision data for method C |
| 18 | Bibliography |
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