Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
surface tension
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because based on structure, surface activity is not expected or cannot be predicted
the study does not need to be conducted because surface activity is not a desired property of the material
Justification for type of information:
JUSTIFICATION FOR DATA WAIVING

The study is waived in accordance with REACH Annex VII, Section 7.6, Column 2.

The surface tension of a substance is defined as a property of liquids arising from unbalanced molecular cohesive forces at or near the surface, as a result of which the surface tends to contract and has properties resembling those of a stretched elastic membrane. Upon contact with water in the presents of air, lead metal will be converted to lead hydroxides and is only susceptible to a low degree to dissolution, yielding dissociated lead cations in aqueous solution which will be subject to subsequent precipitation to inorganic compounds such as hydroxides and carbonates under ambient conditions. Neither the dissolved cationic lead, nor any of the other precipitation products can reasonably be expected to exert any surface active properties, and those properties are also not desired.

Data source

Materials and methods

Results and discussion

Applicant's summary and conclusion