PRIO has been updated with new substances on the Candidate List of substances of very high concern

In June 2025 the European Chemicals Agency ECHA updated the Candidate List in the REACH Regulation with 3 new substances.

The new substances are:

• 1,1,1,3,5,5,5-Heptamethyl-3-[(trimethylsilyl)oxy]trisiloxane, EC number 241-867-7, CAS-number 17928-28-8
• Decamethyltetrasiloxane, EC-number 205-491-7, CAS-number 141-62-8
• Tetra(sodium/potassium) 7-[(E)-{2-acetamido-4-[(E)-(4-{[4-chloro-6-({2-[(4-fluoro-6-{[4-(vinylsulfonyl)phenyl]amino}-1,3,5-triazine-2-yl)amino]propyl}amino)-1,3,5-triazine-2-yl]amino}-5-sulfonato-1-naphthyl)diazenyl]-5-methoxyphenyl}diazenyl]-1,3,6-naphthalenetrisulfonate (Reactive Brown 51), EC number 466-490-7

These substances are included in PRIO with the reference REACH Regulation (EC No 1907/2006), Candidate List.