The tentative ES forms the starting point for the exposure estimate and risk characterisation. A tentative ES is a set of assumptions (using the determinants of exposure) on how a process is conducted and which risk management measures are used or should be implemented. The tentative ES may have to be adapted during the iterative Chemical Safety Assessment until it is shown that risks are controlled. The resulting ESs shall be implemented for own manfacture/use and/or communicated to Downstream Users (DU) as annex to the Safety Data Sheet.