English Abstract The Netherlands chemical Substances Act (CSA) lays down
that the Minister of Housing, Physical Planning and the Environment must
regularly draw up an inventory of chemicals which are suspected of posing a
risk to man and/or the environment. Substances and preparations selected
are put on the list of substances needing special attention. This proposed
list consists of 126 chemicals now. this report describes what kind of
research or study is necessary. This necessity is strongly defined by
lacunes in knowledge which is needed to carry out a good risk-assesment.
This means more than only gathering information about application, occurence
and exposure. Also attention is paid to chemical properties and effects.
even target-groups for measures policy and control are included. On base of
a, sometimes very global, risk-assesment also a priority is