Registration Dossier

Categories

Categories

Category name:
sulfites/thiosulfates/dithionite

Justifications and discussions

Category definition:
sulfites/thiosulfates/dithionite
Category order description:
sulfites/thiosulfates/dithionite
Category rationale:
In a category approach, read-across is used among a number of structurally similar/identical substances, i.e. soluble sulfite substances. The structural similarity is based on the fact that the common (eco)toxicological moiety of concern is the sulfite/hydrogensulfite anion which is either present in the substance as such or is formed as degradation product of unstable substance analogues (e.g. thiosulfates, dithionites) under environmental or physiological conditions.
Within this category, because of the structural similarity, the specified toxicological and ecotoxicological properties are similar.
The similarity rules specified in Annex XI, Section 1.5 of the REACH Regulation in the REACH Guidance on IR & CSA, Chapter R.6 of apply and the category ”sulfites/thiosulfates/ dithionite” is formed.