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The read-across source substance: sodium O,O-diisobutyl dithiophosphate, CAS No. 53378-51-1

Danio rerio LC50(96h) > 791 mg/L

Daphnia magna EC50(48h) > 1020 mg/L

Pseudokirchneriella subcapitata ErC50(72h) = 261 mg/L

In order to insure that no underestimation of hazard was made due to the read-across approach an assessment factor of 4 has been applied in the derivations of the PNEC value.

Hence, for the registered substance sodium O,O-diethyl dithiophosphate, CAS No. 3338 -24 -7 the PNEC is 62.25 mg/L