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: 205-252-7 | CAS number: 136-60-7
The inhibition of the respiration rates for all tested concentrations was in the range of -4.9 to 76 % compared to the mean control. For three lower tested concentration of 10, 32 and 100 mg/L the respiration rate of activated sludge after the incubation period of 3 hours was in the range of the control (i.e. mean values of 0.2, -2.3 and -1.4 %, respectively compared to the control). Therefore, up to and including the concentration of 100 mg/L the test item had no statistically significant inhibitory effect on the respiration rate of activated sludge after the incubation period of 3 hours (result of a Williams t-test,one-sided smaller,a = 0.05). At the higher test item concentrations of 320 and 1000 mg/L the test item had an increasing statistically significant inhibitory effect, with mean values of 56 and 75 % inhibition, respectively. A clear concentration-effect relationship on the inhibition of the respiration rate was observed.
The study of Eisner (2018), investigating the toxicity of butyl benzoate to microorganisms according to OECD guideline 209, was considered as the key study for endpoint coverage. The 3-h EC50 was = 358 mg/L. The 3-h NOEC was 100 mg/L. Up to and including the concentration of 100 mg/L the test item had no statistically significant inhibitory effect on the respiration rate of activated sludge after the incubation period of 3 hours.
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.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Close Do not show this message again