Chemical preparations for use as solvents; Chemical preparations for use in the removal of deposits from metal; Chemical products for inhibiting the growth of weeds; Chemical products for use in industrial cleaning processes; Chemical stripping preparations; Chemical products for use in cooling systems; Preparations for removing scale (other than for household purposes); Preparations for the removal of lime (other than household use); Descalants, other than for household use; Descaling preparations, other than for household purposes; Anti-incrustants