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EC number: 480-070-0
CAS number: 85-27-8
key study: K_Scheerbaum_2006: EC50 (72 h)=4.15 mg/L (growth rate); NOEC (72 h) = 2 mg/L (growth rate)
The toxicity test to aquatic algae and
cyanobacteria (Scheerbaum_2006) performed according to OECD 201 and GLP
was rated with RL=1 (reliable without restrictions) and used as a key
study. The results indicate that SymWhite 377 inhibits the growth of the
freshwater green alga Desmodesmus subspicatus at geometrical mean
measured test item concentrations >= 2.00 mg/L (biomass growth) and >=
4.38 mg/L (growth rate). The EC50-values with 95 % confidence intervals
for inhibition of biomass growth (EbC50) and specific growth rate
(ErC50) after 72 h were 2.42 (2.35 – 2.50) and 4.15 (4.00 – 4.30) mg/L,
respectively. All effect levels are given based on geometrical mean
measured concentrations of the test item SymWhite 377.
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