Please note that this is only unofficial working translation. According to Polish law, only acts promulgated in the Journal of Laws of the Republic of Poland (Dziennik Ustaw) can be considered as a source of law.  The act in Polish, as published in Dziennik Ustaw, can be found here: Act on chemical substances and their mixtures (in Polish) (Journal of Laws of 2011, No. 63, item 322; Journal of Laws of 2019, item 1225- consolidated act)

English version of consolidated act