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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 201-071-2 | CAS number: 77-94-1
Endpoint summary
Administrative data
Description of key information
Additional information
For a registration under REACH at a tonnage band for 100 - 1000 tonnes, information about the hydrolytic behaviour has to be provided. The computer program HYDROWIN v2.00 (by US-EPA) estimates the hydrolysis rate constants for specific organic classes and, furthermore, hydrolysis half-lives under typical environmental conditions. The prediction for tributyl citrate indicated that esters were detected as hydrolysable substance class with half-lives of 1.92 years at pH 8 and 19.18 years at pH 7, thus the substance can be considered as hydrolytically stable.
The phototransformation in air was calculated with the computer program AOPWIN (v1.92a) program made available by the U.S. Environmental Protection Agency. For tributyl citrate an overall OH rate constant (gas-phase reaction constant) of 16.04 E-12 cm3/molecules-sec and a half-life of 0.67 days (8.00 hours) was calculated, assuming a 12- hr day with an OH rate constant of 1.5 E6 OH/cm³. Reaction with N, S and –OH is estimated to be 0.14 E-12 cm3/molecules-sec, no ozone reaction is estimated for the compound. The assumed “Hydrogen Abstraction” gives a value of 15.90 E-12 cm³/molecule-sec, which is almost equal to the overall OH rate constant of the compound. All calculations were performed supposing a surrounding temperature of 25 °C. Thus it can be concluded that the substance will be rapidly degraded in air.
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.
