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EC number: 201-070-7
CAS number: 77-93-0
hydrolysis as abiotic degradation pathway is in the list of endpoints
according to REACH Annex VIII, it is not required if the substance is
readily biodegradable. Triethyl citrate was found to be readily
biodegradable and the endpoint hydrolysis was waived in
accordance with REACH, Annex VIII, Section 220.127.116.11, Column 2.
The phototransformation in air was
calculated with the computer program AOPWIN (v1.92a) program made
available by the U.S. Environmental
Protection Agency. For triethyl citrate an overall OH rate constant
(gas-phase reaction constant) of 7.33 E-12 cm3/molecules-sec and a
half-life of 1.46 days (17.521 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 7.19 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.
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