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#1 Posted : 29 March 2002 06:35:00(UTC)
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Posted By Simon Evans Can anyone help with some advice. A customer requires a product involving use of a resin. The resin is made of 2 specified substances from 2 manufacturers, how do you carry out a COSHH assessment of the resulting mixture. Data sheets are available for the 2 substances. Thanks for any assistance.
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#2 Posted : 01 April 2002 10:35:00(UTC)
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Posted By Paul Leadbetter Simon The first question has to be 'is there a safer alternative'? If not, you need to consider the routes of exposure to the substances concerned. Are they volatile (in which case, you need to think about inhalation exposure) or not (in which case, you need to think about skin contact and, possibly, ingestion from contaminated hands or gloves)? While the initial two parts of the resin may present some risks, it is likely that the cured resin will present a much lower risk as the starting materials will have reacted together to produce the hardened filler, adhesive, or whatever. However, if the cured resin is to be sanded or otherwise abraded, you may need to consider inhalation of the particles. Contact me off-list if you need any further help in confidence. Regards Paul
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#3 Posted : 02 April 2002 09:03:00(UTC)
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Posted By Ken Taylor I would want information from 3 sources. 1. From the manufacturer of substance A as to it's compatability and reaction with substance B; 2. From the manufacturer of substance B as to it's compatability and reaction with substance A; and if still satisfied 3. From the specifier as to the basis of the specification and expected outcome. Should this not provide sufficient confidence to continue with a COSHH assessment, the assistance of a 'competent person' (eg chemist) would be sought. The underlying question is what substances A and B produce when in reaction or association.
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