Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 260-982-3 | CAS number: 57843-53-5
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The test substance Primid QM-1260 is hardly biodegradable according to a Ready Biodegradability Manometric Respirometry Test, OECD 301F, test result. However, there is no significant toxicity effect occurred to microbial respiration up to 55.7 mg/L, since the biodegradation of the mixture in the testing system was within the theoretical value.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
The biodegradability of Primid QM-1260 was exposed to activated sludge derived from a municipal sewage treatment plant. It was tested under aerobic static exposure conditions in a manometric respiration test according to OECD 301F for ready biodegradability.
Based on O₂ consumption during the 28 days test, it was found that Primid QM-1260 is hardly biodegradable, comparing to the theoretical oxygen demand (ThOD). The positive control reference sodium benzoate reached 78% biodegradation after 14 days, confirming suitability of inoculum and test conditions. The calculated biodegradation ratio with respect to DOC reached 7% for Primid QM-1260 and 100 % for sodium benzoate. Thus, it can be concluded that no significant biodegradation of Primid QM-1260 occurred following exposure duration of 28 days.
Primid QM-1260 did not reach the pass level of 60% for ready biodegradability in the Manometric Respirometry Test within the 10-day window, nor after 28 days. Therefore, it is considered to be a non-readily biodegradable substance.
The toxicity of Primid QM-1260 to microorganisms was also investigated by applying the toxicity control, and the results showed that this substance has no significant toxic effect on the microbial activity.
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.
