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EC number: 204-616-2
CAS number: 123-30-8
The short and long-term aquatic toxicity to
fish, invertebrates, algae and micro-organisms has been investigated for
this substance.The short-term LC50 for
fish (Oryzias latipes)
was LC50 (96 h) 0.82 mg/L. The
EC50 for micro-organisms (Pseudomonas putida) was 29.9 mg/L. The
short-term EC50 for invertebrates (Daphnia magna) was(48
h) 0.089mg/L. amd values
for the algae (Selenastrum
results from Growth Inhibition in Algae as EC50 (growth rate): 0.253
mg/L, EC10(growth rate) of 0.083mg/L (all based on calculated mean
measured concentration). For the
early-stage toxicity in fish,(Oryzias
41d NOEC for growth is determined at 0.049 mg/L based on measured
concentrations.A long-term NOEC for
invertebrates (Daphnia magna) was 0.206
mg/L (21 d) based on cumulative number of juveniles produced per adult
on freshwater invertebrates. However parental toxicity was determined at
the higher concentrations tested. Studies conducted to examine the
toxicity profile of the parent compound versus the degradation products
found that the parent compound is more toxic than the degradation
NOEC value derived from the long term Fish study of 0.049 mg/Lwas
the point of departure for the derivation of the PNECaquatic(freshwater),PNECaquatic(marine
water),and PNECaquatic(intermittent releases).The
EC50 forPseudomonas putida was the point of departure for the
derivation of the PNECSTP.
Based on the aquatic toxicity results the
substance is classified as aquatic acute 1 and aquatic chronic 1.
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