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: 227-807-2 | CAS number: 5986-55-0
Short-term toxicity results for Daphnia and algae are available for the substance. The 48h-EC50 value to Daphnia magna was 5.5 mg/L based on mean measured concentrations in freshly prepared test solutions. The ErC50 for algae is 21 mg/L based on geometric mean measured test concentrations. Since the acute EC50 values are >1 mg/L, the substance does not need to be classified for acute toxicity according to EU CLP (Table 4.1.0; a).
The only available chronic value is the EC10 of algae being 13 mg/L. According to EU CLP Figure 4.1.1, the chronic classification has to be determined based on this chronic value according to Table 4.1.0, (b) ii (as the substance is readily biodegradable) and based on the available EC50 value for Daphnia and environmental fate data according to Table 4.1.0, (b) iii. The most stringent outcome should be leading:
- Based on the EC10 > 1 mg/L, the substance does not need to be classified for chronic toxicity according to Table 4.1.0, (b) (ii). The substance has, however, a log Kow ≥ 4, the substance needs to be classified for chronic toxicity in Category 2 based on the available EC50 value for Daphnia magna (as it is >1 but ≤10 mg/L). This is the most stringent outcome.
Overall, it can be concluded that the substance needs to be classified for environmental hazards as Chronic Cat. 2 (H411) according to EU CLP (EC 1272/2008 and its amendments).
As the EC50 value for Daphnia magna is >1 but ≤10 mg/L, the substance needs to be classified as Acute Cat. 2 (H401) and Chronic Cat. 2 (H411) according to GHS.
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