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: 231-669-9 | CAS number: 7681-53-0
Toxicity to activated sludge microorganisms:- EC10 (3h) >= 1000 mg/L (EU Method C.11 and OECD guideline 209)- EC50 (3h) > 1000 mg/L (EU Method C.11 and OECD guideline 209)
A 3h respiration inhibition limit test was performed with a nominal concentration of 1000 mg/L of sodium hypophosphite according to the EU Method C.11 and the OECD guideline 209 (Eisner, 2009).Two controls and a positive control (3,5-dichlorophenol) were tested in parallel.
No significant toxic effects were observed and the results of the positive control confirmed suitability of the activated sludge and the method used. The EC10 (3h) of the test substance to activated sludge microorganisms was at least 1000 mg/L. The EC20, EC50, and EC80 (3h) could not be calculated but were clearly higher than 1000 mg/L.
Therefore, sodium hypophosphite has no significant inhibitory effect on the respiration rate of activated sludge and is thus not toxic to these microorganisms.
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