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EC number: 701-390-1
CAS number: -
order to predict effects of chemicals in the environment and in
biological waste water treatment plants, an activated sludge respiration
inhibition test was performed. The toxicity to activated sludge was
determined in accordance with OECD Test Guideline 209, and in compliance
with the OECD principles of Good Laboratory Practice.
test is valid as shown by the EC50of the reference compound,
3,5-dichlorophenol (8 mg/L and 11 mg/L contact time 30 minutes and 3
hours respectively) and the control respiration rates which are within
15% of each other.
toxicity of tallowtripropylenetetramine to activated sludge was
determined at contact times i.e. 0.5 and 3 hours, using various
concentrations of the test substance. The inhibitory effect of
tallowtripropylenetetramine at a particular concentration is expressed
as a percentage of the two controls. The EC50of
tallowtripropylenetetramine for activated sludge after 30 minutes
contact time is 921 mg/L. The EC10, EC20and EC80are
138, 264 and 3205 mg/L, respectively.
EC50of tallowtripropylenetetramine for activated sludge after
3 hours contact time is 289 mg/L. The EC10, EC20and
EC80are 26, 59 and 1420 mg/L, respectively.
is therefore considered not harmful to activated sludge.
30 minutes EC50 = 921 mg/L
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