Thermoplastic moulding compound containing (A) one or several vinyl polymers, (B) BaSO4 particles, and (C) optionally a bifunctional reactive compound polycondensate. The BaSO4 particles have an average diameter of more than 100 nm and a maximum average diameter of 3 000 nm. Also described is the use of the inventive moulding compound in the production of toys or medical items, in addition to moulded parts made from said moulding compound.
