Zinc sulphate

Dissociation constant

Administrative data

Endpoint:

dissociation constant

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
The substance does not contain relevant functional groups for which an assessment of the dissociation behaviour would provide information for risk assessment purposes. Zinc sulphate is a readily water soluble (>10 g/L at 20°C) inorganic salt, yielding only inorganic ions upon dissolution. Therefore, the determination of a dissociation constant is not considered to be required (Guidance on information requirements and chemical safety assessment Chapter R.7a: Endpoint specific guidance, section R.7.1.17), and the study is waived on the basis of intrinsic chemistry.