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New and revised limits ensure safety in the workplace
Date:8/6/2008

on is involved as in the case of isoprene, which this year has been given an MAK Value. This is because the naturally occurring substance, even being produced in the human body, which as a component of many biomolecules in the body is very useful for natural substances such as rubber and for many aromatic compounds in industry, is known to be a carcinogen and is able to modify germ cells. Following a comparison with the so-called endogenous concentration however, i.e. that formed as part of the body's metabolism, the commission has established that at an MAK Value of 3 ml/m working with this substance does not increase the naturally occurring risk.

A good many other substances that the Senate Commission has investigated are ones that we meet in daily life, and not just in the workplace. This applies to titanium dioxide, used in sun creams, to aluminium, which has applications as a light material and in electrical engineering, or dimethyl sulphurous oxide, which is used as a solvent and an anti-freeze. Thus the scientists they work for the commission on an honorary basis and are completely independent considered for example titanium dioxide together with two other substances to be candidates for the category "carcinogenic, but when used subject to the MAK and BAT Values, make no contribution towards the risk of cancer". Before these values can be established however, further studies are necessary. For six substances including dimethyl sulphurous oxide the list specifies MAK Values, and in a further four cases the new studies confirmed the known value following careful consideration.

Aluminium and nine other substances received a new BAT Value, which in some cases takes account of the modified definition from 2007. In last year's list, for the first time average values were given as BAT Values, instead of maximum values.

In addition to the values cited, the scientists also examined whether a workplace substance causes cancer, modifies
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Contact: Dr. Eva-Maria Streier
em.streier@dfg.de
49-228-885-2250
Deutsche Forschungsgemeinschaft
Source:Eurekalert

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