Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The Rosin adducts and rosin adduct salts category is a UVCB category and includes rosin or rosin salts that have been chemically reacted with either fumaric acid or maleic anhydride.Rosin acids are the predominant components of rosin (>85%). Rosin acids are composed of three skeletal classes oftricyclic carboxylic acids which share similar structure, but vary in the position of the double bonds and methyl groups. As each member of this category is a UVCB, the organic components will vary in type and proportion.However, once in water, the maleic anhydride form will hydrolyse to result in the same structures as rosin reacted with fumaric acid.The presence of a metal cation will not alter the structure of the organic component of the molecule. The organic component can therefore be viewed as equivalent across the category, and biodegradation results from one category member can be read across to other substances within the category.

Reliable studies are available for several category members and on the basis of the study results the substances would not be considered to be readily biodegradable.