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EC number: 287-476-5
CAS number: 85535-84-8
A fish acute toxicity test was performed to
determine the 96 h LC50 in the bleak (Alburnus alburnus) of five SCCPs; the
C10-13 chlorinated paraffins Witaclor 49 (49% Cl), Witaclor 55EN (56%
Cl), Witaclor 63 (63% Cl) and Witaclor 71P (71% Cl) and the C11.5
substance Chloroparaffin huls 70C (70% Cl), under static conditions. The test
substances were dissolved in acetone to prepare the neccessary dilutions
due to their low water solubility. At least six concentrations of each
test substance was used in the study with an acetone concentration of
500 µl/L; solvent and untreated control groups were also included.
No mortality was observed in bleaks exposed
for 96 h in brackish water containing up to 5000 mg/L of Witaclor 49,
Witaclor 63 or Witaclor 71P or up to 10,000 mg/L of Witaclor 55EN or
Chloroparaffin huls 70C. Therefore, the 96 h LC50 values can be considered
as greater than these concentrations.
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