· the replacement of the carcinogenic and toxic for reproduction substances from table 1 to 15 (see also docs WG 5 N 317 and N 336) with safer alternatives, if appropriate;· - the updating of the classifications and the addition of the environmental danger symbol for information, if appropriate; · - updating of the normative references;· - requirements for BTX in oven hardening plasticized PVC modelling clay sets and plastic moulding sets (polystyrene granules) (in analogy with corresponding method in EN 71-5:1993/prA1).