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BS 7164-23.1:1993

Current
Current

The latest, up-to-date edition.

Chemical tests for raw and vulcanized rubber. Methods for determination of total sulfur content Oxygen combustion flask method
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-15-1993

Publisher

British Standards Institution

Committees responsible
National foreword
Method
1. Scope
2. Principle
3. Reagents and materials
4. Apparatus
5. Preparation of test sample
6. Safety precautions
7. Procedure
8. Expression of results
9. Test report
Annex
A. (informative) Bibliography
Table
1. Repeatability data
Figures
1. Form of paper for wrapping test portions
2. Cut form of paper for wrapping test portions (for
    use with smaller platinum baskets)
3. Typical combustion apparatus for the determination
    of sulfur by the oxygen combustion flask method
4. Typical combustion device for use in the oxygen
    combustion flask method

Specifies an oxygen combustion flask method for determination of the total sulfur content of rubber. Applies to the determination of all the sulfur present in a rubber or rubber product, apart from that contained in barium sulfate. Applies to CR, NR, BR, SBR, IIR, IR, NBR, EPDM and ebonite. Coverage includes: reagents and materials; apparatus; safety precautions; procedure. Also includes detailed diagrams.

This part of ISO 6528 specifies an oxygen combustion flask method for the determination of the total sulfur content of rubber.

The method is applicable for the determination of all the sulfur present in a rubber or rubber product, except that contained in barium sulfate.

It is applicable to NR, CR, SBR, BR, IR, IIR, EPDM, NBR and ebonite. (The meanings of these designations are given in ISO 1629:1987, Rubber and latices – Nomenclature.)

This method gives unreliable (usually low) results in the presence of lead, antimony, zinc, barium and calcium compounds. If calcium carbonate is the only calcium compound present, good results can be obtained by modifying the absorbing solution.

Committee
PRI/22
DevelopmentNote
Also numbered as ISO 6528-1 Supersedes BS 903-B6.10(1958) (09/2005) Reviewed and confirmed by BSI, September 2007. (09/2007)
DocumentType
Standard
Pages
14
PublisherName
British Standards Institution
Status
Current
Supersedes

BS 7825-3.11:1998 Calibration of rubber and plastics test equipment. Calibration schedules Rubber polymer identification and chemical properties

ASTM D 297 : 2015 : REDLINE Standard Test Methods for Rubber Products—Chemical Analysis
BS 5923-1:1980 Methods for chemical analysis of rubber Determination of ash
BS 5923-2:1980 Methods for chemical analysis of rubber EDTA titrimetric method for determination of zinc content of rubber products
ISO 6528-3:1988 Rubber Determination of total sulfur content Part 3: Furnace combustion method
BS 5923-3:1981 Methods for chemical analysis of rubber Determination of volatile matter content of raw rubbers
ISO 6528-2:1992 Rubber Determination of total sulfur content Part 2: Sodium peroxide fusion method
ISO 1629:2013 Rubber and latices — Nomenclature

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