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ISO FDIS 247

Rubber - Determination of ash

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Organization: ISO
Publication Date: 13 July 2016
Status: active
Page Count: 14
ICS Code (Rubber): 83.060
scope:

This document specifies three methods for the determination of ash from raw rubbers, compounded rubbers and vulcanizates. The methods are applicable to raw, compounded or vulcanized rubbers of the M, N, O, R and U families described in ISO 1629, except that:

- Method A shall not be used for the determination of ash from compounded or vulcanized rubbers containing chlorine, bromine or iodine;

- Method B shall be used for compounded or vulcanized rubbers containing chlorine, bromine or iodine. lt shall not be used for uncompounded rubbers;

- Method C is intended to be used for the determination of ash from raw rubber by wrapping the test portion in ashless filter paper;

- Lithium and fluorine compounds might react with silica crucibles to form volatile compounds, giving low ash results. Platinum crucibles shall therefore be used for ashing fluorine-containing and lithium-polymerized rubbers.

This document does not cover the interpretation of the ash results as to the inorganic chemical content of a compound or vulcanizate. This is the responsibility of the analyst, who has to be aware of the behaviour of rubber additives at elevated temperatures.

The three methods of ashing do not give identical results in all cases, and it is necessary to state in the test report the method of ashing employed.

Document History

ISO FDIS 247
July 13, 2016
Rubber - Determination of ash
This document specifies three methods for the determination of ash from raw rubbers, compounded rubbers and vulcanizates. The methods are applicable to raw, compounded or vulcanized rubbers of the M,...
September 15, 2006
Rubber - Determination of Ash
A description is not available for this item.
January 1, 1990
Rubber - Determination of Ash
A description is not available for this item.

References

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