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EC number: 814-283-0
CAS number: 42220-47-3
In a 72-hour algal growth study, cultures of
Pseudokirchneriella subcapitata were exposed to test item Phosphonic
acid, P,P'-(1-hydroxyethylidene)bis-, compd. with 2-aminoethanol (1:?)
at nominal concentrations of 0 (control), 0.064, 0.20, 0.64, 2.0, 6.39
and 20 mg/L under static conditions for in accordance with the OECD 201
guideline. The water pH, temperature and lighting intensity were all
maintained within acceptable guideline specifications. The following
statistical effect concentrations were obtained after 72 hours of
Growth rate: EC10: 0.99 mg/l and EC50: 4.14
Since the measured concentrations of the
test substance in the test solutions above the LoQ did sufficiently
confirm the nominal concentrations, the effect concentration can be
expressed relative to the nominal concentration for the evaluation of
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