Registration Dossier
Registration Dossier
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EC number: 914-309-1 | CAS number: -
Endpoint summary
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
Physico-chemical data and an acidic/alkaline reserve test are available.
The substance is constituted of spheres of 1 to 4 mm of diameter and measurements (1) have demonstrated that attrition (i.e. progressive wear caused by friction) was less than 2% (generally <1%). In addition, a particle size distribution test determined that 0% (w/w) of the test substance was smaller than 400 µm.
During the performing of an acidic/alkaline reserve test it had been showed that the substance was very poorly soluble. Indeed, the substance was ground and distilled with water and then kept under magnetic stirring during 4 hours at 37°c. After centrifugation, less than 5% of the initial product was found in the clear phase.
In consequence, all the available information underline that PBN1 mixture is a probably non-reactive, inert substance. The particles size will not allow the substance to be absorbed by the skin or by the respiratory airways.
The particle size distribution test data is presented in § 4.5 and the acidic/alkaline reserve test data is presented § 7.3 .
(1) Compte-rendus techniques du 24 avril 2009 (ref: SFL-CR26/09; séquentiel R08-9103) et du 23 juillet 2009 (ref: SFL-CR43/09; séquentiel R08-9103).
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