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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Under the conditions of this present test di C8-C10, branched, C9 rich, alkylnaphthalene sulphonic acid (DNNSA) was not toxic to waste water (activated sludge) bacteria at or below a loading rate of 100 mg/l (NOEC).  DNNSA (di C8-C10, branched, C9 rich, alkylnaphthalene sulphonic acid) is used as a close analog of Zinc BIS( DI C8-C10, BRANCHED, C9 RICH, ALKYLNAPHTHALENE SULPHONATE) in a read-across.

Key value for chemical safety assessment

EC50 for microorganisms:
560 mg/L
EC10 or NOEC for microorganisms:
100 mg/L

Additional information