BS ISO 9028:2006
Rubber - Dissolution by acid digestion

Standard No.

BS ISO 9028:2006

Release Date

2006

Published By

British Standards Institution (BSI)

Latest

BS ISO 9028:2006

Replace

BS 7164-4:1990

Scope

This International Standard specifies methods for disintegration of raw rubber and rubber products by nitric acid or by a mixture of nitric and sulfuric acids. This International Standard is generally applicable, but is essential where potentially volatile elements or combinations of elements are present (i.e. As, Sb, Bi, and Zn + CI, Cu + CI and Pb + CI). It is useful in these cases because lower temperatures are involved which result in less loss by volatilization. These methods will be used in order to produce solutions for the determination of metals, for example as traces, if the application of ISO 247 is not advisable. These methods prevent loss of volatile metal derivatives and the formation of insoluble metal silicates (which may result during dry ashing of halogenated rubbers containing zinc or of rubbers filled with silica).

BS ISO 9028:2006 history

• 2006 BS ISO 9028:2006 Rubber - Dissolution by acid digestion
• 1990 BS 7164-4:1990 Chemical tests for raw and vulcanized rubber - Methods for dissolution of rubber by acid digestion

BS ISO 9028:2006 Rubber - Dissolution by acid digestion has been changed from BS 7164-4:1990 Chemical tests for raw and vulcanized rubber - Methods for dissolution of rubber by acid digestion.