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: 252-156-6 | CAS number: 34690-00-1
96 h LC50 130 mg active acid/L, S. maximus, reliability 2 (AnalyCen 2002a)96 h LC50 440 mg active acid/L, O. mykiss, reliability 2 (ABC 1979, read-across from HMDTMP acid)
A 96 h LC50 value of 300 mg/l test substance, equivalent to 130 mg active acid/L, have been reported for the effects of the test ubstance on the mortality of the marine fish Scopthalamus maximus. 100% mortalities were recorded in the highest test concentration (1000 mg/l test substance) but these are thought to relate to the low pH recorded, pH 3.6, rather than to relfect the true toxicity of the test substance.
No data are available on the short-term toxicity of BHMT (CAS 34690-00-1) with freshwater fish, however data are available with the structurally analogous substance HMDTMP acid (CAS 23605-74-5), see Aquatic toxicity endpoint summary for a justification of read-across. A 72 h and 14 d LC50 value of 440 mg active acid/l have been determined for the effects of the test substance on the mortality of the freshwater fish Oncorhynchus mykiss (reported as Salmo gairdneri) based on arithmetic mean measured concentrations. A 14 d NOEC value of 232 mg/l based on mortality was also reported in the same study (ABC 1979).
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