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EC number: 254-179-7
CAS number: 38888-98-1
Available information:1,1-DPE:The respiration rate of an activated sludge exposed to 1,1-DPE and fed with a standard amount of synthetic sewage feed was measured.. The inhibitory effect of the test substance was expressed as a percentage of the mean respiration rates of two controls. For a respiration inhibition test to be considered valid, the control values should be within 30% of each other. An EC50 obtained for the reference material must be within 2-25 mg/L. The control coefficient variation was 24% and an EC50 value of 9.19 mgIL was determined for the reference substance, rendering the test valid. For test substance 1-Phenylethylbenzene, an EC50 of> 1 000 mg/L was obtained at 3 hours post dose. Results presented are based on nominal concentrations.Phenyltolylethane: The influence of Phenyl-tolyl-ethane on the respiration rate of activated sludge was investigated after a contact time of 3 hours according to OECD guideline 209. The EC50 was above the highest loading rate tested (1000 mg/l).
From the available data for toxicity to
microorganism it can be concluded that 1,1’-DPE is devoid of any
relevant toxicity to microorganisms.
This is confirmed by data from the read-across
substance PTE which also demonstrates no relevant toxicity to microorganism
(EC50 > 1000 mg/l).
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