Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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: 241-475-6 | CAS number: 17462-58-7
Endpoint summary
Administrative data
Description of key information
Additional information
Stability
Analogous compound isopropyl chloroformate: hydrolyses fast (DT50 = 5.5 min) (OECD TG 111; SafePharm, 2003).
Hydrolysis product sec-butanol is hydrolytically stable (OECD, 2002).
In air, sec-butyl chloroformate is expected to be photodegraded by OH-radicals with a half-life of 3.03 d (BASF AG, 2008). This estimation refers to dry air. In mist, rain, droplets and aerosols hydrolysis will be the major fate process in air due to the short half-life in aqueous solutions.
Hydrolysis product sec-butanol: A half-life of 1.61 d was calculated for the degradation in the atmosphere by OH-radicals (US EPA, 2008).
Biodegradation
No data on the parent compound. The hydrolysis product sec-butanol is readily biodegradable (NITE, 2008). Regarding the hydrolysis products HCl and CO2, biodegradation is not applicable due to the inorganic character of these molecules.
Bioaccumulation
Due to the low log Kow of the parent compound and its hydrolysis products, significant accumulation in organisms is not to be expected (BASF SE, 2008; OECD, 2002).
Transport and distribution
The estimated low Koc values of the parent compound and the hydrolysis product indicate no significant potential for adsorption to soils or sediments (BASF SE, 2008).
A high Henry's Law Constant (HLC) of 512 Pa m³/mol was estimated for sec-butyl chloroformate (BASF SE, 2008). However, it is rapidly hydrolysed to sec-butanol, CO2 and HCl.
Based on a measured HLC of 0.92 Pa m³/mol, sec-butanol will slowly evaporate into the atmosphere from the water surface (BASF SE, 2008).
Following the Mackay Level I calculations, the parent compound will preferentially distribute into the air (BASF SE, 2008). The hydrolysis product sec-butanol is expected to preferentially distribute into water (BASF SE, 2008). Mackay Level III calculations reveal that sec-butanol would predominantly distribute into water (45.9 %) and soil (51.6 %) (BASF SE, 2008).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.
