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Ecotoxicological information

Toxicity to microorganisms

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Link to relevant study record(s)

Description of key information

Schaefer, E. C. and Siddiqui, A. I. (2003). Hexabromocyclododecane (HBCD): An activated sludge respiration inhibition test. Report no.: 439E-108A. Report date: 2003-08-20.

Key value for chemical safety assessment

EC50 for microorganisms:
15 mg/L

Additional information

HBCDD did not inhibit the respiration of activated sludge at 15 mg/L. Thus, the NOEC was >15 mg/L, the highest concentration tested.