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: 205-840-3 | CAS number: 155-04-4
ZMBT is an organic complex, in which MBT structure is present. The dissolution of MBT determines the hazard profile of ZMBT aqueous solution; and hence the environmental fate and behavior of MBT is used as read-across approach to support the risk assessment of ZMBT.
In absence of light and oxygen 2-mercaptobenzothiazole is hydrolytically stable with no hydrolysis products observed and 85% recovery within 7 days. According to expert judgment MBT can be oxidized by atmospheric oxygen to 2,2`-dithiobisbenzothiazole (MBTS) in aqueous solution. Hansson & Agrup reported 60% conversion of MBT into MBTS in phosphate buffer at pH 6.5 within 2 hours with the presence of atmospheric oxygen.
The phothlytic breakdown of 2-mercaptobenzothiazole occures rapidly with a half-life under one hour. The calculated half-life was 27.4 minutes for synthetic humic water and 31.1 minutes for pure water. 2 -Mercaptobenzothiazole was classified as "photolabile".
In the atmosphere a half-life of 4.3 hours for ZMBT due to reaction with photochemically produced hydroxyl radicals is estimated by AOPWIN v1.92 with a rate constant of 9.03 *10-11cm3/(molecule*sec), considering an OH-concentration of 500,000 radicals/cm³ as a 24-h average (Currenta, 2010). The estimated half-life in air of ZMBT is much shorter than 48 hours and hence no potential for long-range transport of ZMBT in air is expected.
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