Registration Dossier
Registration Dossier
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EC number: 298-995-1 | CAS number: 93841-25-9
Endpoint summary
Administrative data
Description of key information
The LC50 to Danio rerio after 96 hours was determined to be >77.9mg/L. The NOEC (0 -96 hours) was determined to be 77.9mg/L.
Based on measured concentrations of the test item hydroxyethyl-p-phenylenediamine sulfate, the 48 hour EC50 for Daphnia magna was determined to be 3.48 mg/L.
Hydroxyethyl-p-phenylenediamine sulfate was found to inhibit the growth of the freshwater green alga Desmodesmus subspicatus at nominal concentrations >= 6.25mg/L (biomass growth) and >=25mg/L (growth rate) corresponding to mean measured concentrations of >=2.98 and >=11.7mg/L respectively. The EC50 values for inhibition of biomass growth (EbC50) and specific growth rate (ErC50) after 72 hours were nominal 19 mg/L and 41 mg/L respectively and mean measured 8.7 mg/L and 19.0 mg/L respectively. Inhibition effects were found to be reversible up to the nominal concentration of 100mg/L (all effect levels given as nominal and mean measured concentrations).
The EC50 value of the test item hydroxy-p-phenylenediamine sulfate for toxicity to microorganisms was determined to be 185mg/L.
Additional information
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