Registration Dossier
Registration Dossier
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EC number: 269-798-8 | CAS number: 68333-89-1 The non-volatile, high-boiling residue from the distillation of products from cumene-phenol process. It consists predominantly of substituted phenyl groups crosslinked by carbon-oxygen bonds and phenylaliphatic bonds.
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
In a study conducted according to OECD Guideline 209 and EU Method C.11 the 3 h NOEC based on respiration inhibtion of the test item was determined as 100 mg/L (nominal).
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 100 mg/L
Additional information
The respiration inhibition of activated sludge was investigated in a study conducted according to OECD Guideline 209 and EU Method C.11. Activated sludge taken from a domestic sewage treatment plant was exposed to non-volatile, high-boiling byproducts from the cumene-phenol process at nominal concentrations ranging from approximately 10 to 1000 mg/L for 3 h under static conditions. The 3 h NOEC, EC10, and EC50 of the test item were determined as 100, 240, and >1000 mg/L (nominal), respectively.
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