Registration Dossier
Registration Dossier
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EC number: 939-516-4 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
No study is available. PNECstp can be derived on the basis of tested concentration showing no inhibition of bacteria respiration in the OECD 301F ready biodegradability test (80.3 mg/L as test substance), which can be regarded as a NOEC value for sewage treatment plant microorganisms.
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 100 mg/L
Additional information
According to column 2 of Annex VIII, the study is not needed as the substance is readily biodegradable. According to ECHA Ch.R. 10 (ECHA, 2008), the concentration of test substance evaluated in the ready biodegradability test (80.3 mg/L) can be regarded as a NOEC value for sewage treatment microorganisms, as no evidence of respiratory inhibition was observed at this concentration. Using this apparent NOEC value and an assessment factor of 10, a PNECstp value of 8.0 mg/L can be derived.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
