Registration Dossier
Registration Dossier
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EC number: 203-581-0 | CAS number: 108-42-9
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
National Library of Medicine HSDB Database
Kuhn R et al; Water Res 23 (4): 501-10 (1989)] **PEER REVIEWED**
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 0.013 mg/L
Additional information
21 day Daphnia reproduction tests were conducted in line with the provisional procedure proposed by the Federal Environmental Agency, as of Jan 1, 1984. Groups of 20, 24-hr old Daphnia magna Straus were exposed to 6.3 to 800 ug/L 3-chloroaniline in semi-static test vessels. Parent animals in the test and control vessels had to be pipetted 3 times/wk in freshly prepared test and control media at the corresponding concentration level. The no observed effect concentration (NOEC) was determined from the parameters of mortality of the parent animals, reproduction rate and appearance of the first offspring during the test period. In preliminary acute Daphnia tests, the 24 hr EC50 was 0.9 mg/L for 3-chloroaniline, the EC0 was 0.40 mg/L. The nominal 21 day no observed effect concn was 0.013 mg/L, with the more sensitive parameters being reproductive rate and the appearance of first offspring.
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