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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

By analogy (Read acros approach) , the 72-hour EC50 (Fresh water algae: Pseudokirchneriella subcapitata ) of Reaction product of naphthalene, butanol sulfonated and neutralized by caustic soda was > 200 mg/L based on the growth rate; revealing it is not harmful for the algae.

Key value for chemical safety assessment

Additional information

The toxicity to aquatic algae of Reaction product of naphthalene, butanol, sulfonated and neutralized by caustic soda is determined by a read-across approach based on analogue substance Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda.

A GLP-compliant study, scored as Klimisch 2 and flagged as a key study, is available on Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda; giving a 72h-EC50 > 200 mg/L and revealing that Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda is not harmful to algae (M. Anderson, 2013).