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Dissociation constant

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dissociation constant
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is hydrolytically unstable (half-life less than 12 hours)

Description of key information

In accordance to annex IX, 7.16, dissociation constant has not been determined as half-life-time of captan in aqueous solution is found to be < 12 hours.

Key value for chemical safety assessment

Additional information

Dissociation and dissociation products have not been determined as half-life-time of captan in water is very low. Decomposition products are well known from registration of captan as active ingredient for pesticide products.