Registration Dossier
Registration Dossier
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: 203-474-9 | CAS number: 107-22-2
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriately low concentrations.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 41 mg/L
- EC10 or NOEC for microorganisms:
- 23 mg/L
Additional information
Disturbances of the biodegradation process of activated sludge are not to be expected if the substance is correctly introduced into waste water treatment plants. This was confirmed by the results on aerobic biodegradability (see section 5.2 ) and the respiration inhibition test with activated sludge following OECD TG 209, where an EC20 of ca. 400 mg a.i./L was determined (BASF, 1996).
In a cell multiplication inhibition test with Pseudomonas putida following DIN 38412, part 8 (1991; similar to ISO 10712, 1996), growth of P. putida was inhibited by glyoxal (40% content) at concentrations higher than ca. 50 mg test mat./L. The EC50 was determined to be 102 mg test mat./L corresponding to ca. 41 mg a.i./L.
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.
