Registration Dossier
Registration Dossier
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EC number: 202-681-1 | CAS number: 98-56-6
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
EC50 (3h) = 103.6 mg/l
Key value for chemical safety assessment
- EC50 for microorganisms:
- 103.6 mg/L
- EC10 or NOEC for microorganisms:
- 0.32 mg/L
Additional information
On the basis of results obtained in the preliminary test, the definitive test was carried out at six concentrations of 4-chloro-α,α,α-trifluorotoluene (PCBTF) in a geometric series, namely 3.2, 10.1, 31.8, 100.8, 315.8 and 1000.4 mg/L.
The EC50 value with its 95% confidence limits and the NOEC after 3 hours of incubation, in terms of nominal test item concentrations, were as follows:
Time EC50 (mg/L) 95% LCL (mg/L) 95% UCL (mg/L) NOEC (mg/L)
3 hours 103.6 80.0 131.6 3.2
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