Registration Dossier
Registration Dossier
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EC number: 273-521-6 | CAS number: 68988-22-7 A complex residuum from the distillation of products from the manufacture of dimethyl terephthalate by air oxidation and esterification of p-xylene. It consists of polyphenyl polyesters.
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
With the duplicate samples of an activated sludge respiration inhibition test according to OECD 209 at a loading rate of 100 mg/L of the submission substance either no or 12% inhibition of respiration was observed.
EC50 > 100 mg/L
Key value for chemical safety assessment
Additional information
Microorganism toxicity was determined by an activated sludge respiration inhibition test according to OECD 209 and EU-method C.11 (GLP-compliance). Tthe EC50 of the submission substance exceeded the nominal concentration (loading rate) of 100 mg/L. With the duplicate samples no and 12 % inhibition of respiration rate was observed.
Effect concentration:
EC50 >100 mg/L nominal concentration.
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