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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 202-625-6 | CAS number: 97-99-4
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Phototransformation in air: Rate constant for reaction with OH radicals: 23.6E-12 cm3/molecule.sec (half-life 0.7 days)
Key value for chemical safety assessment
- Half-life in air:
- 0.7 d
- Degradation rate constant with OH radicals:
- 0 cm³ molecule-1 s-1
Additional information
Tetrahydrofurfuryl alcohol contains no chromophores that would absorb visible or UV radiation, so direct photolysis is not likely to be significant. Indirect photolysis resulting from gas-phase reaction with photochemically-produced hydroxyl radicals may occur.
The SRC AOPWIN program (v1.92) (EPA, 2000) has been used to obtain a value of the rate constant for reaction of tetrahydrofurfuryl alcohol with hydroxyl radicals.
This prediction method has not been formally validated in terms of its applicability to tetrahydrofurfuryl alcohol; therefore, there is uncertainty associated with the calculated value obtained. The training set for the AOPWIN program model does include data for furan-type structures, and therefore the result is considered sufficiently reliable for the present purpose.
The predicted rate constant for reaction of tetrahydrofurfuryl alcohol with hydroxyl radicals in air is 23.6E-12 cm3/molecule-sec.
The overall half-life in air under default conditions of hydroxyl radical concentration was calculated using the following expressions:
kdegair (d-1) = kOH (cm3/molecule.sec) x OHConcair (molecules/cm3) x 24 x 3600
DT50 (d) = ln 2/ kdegair (d-1)
Where:
kdegair = total rate constant for degradation in air
kOH = rate constant for reaction with hydroxyl radicals
OHConcair = concentration of hydroxyl radicals in air = 5 x 105 OH molecules/ cm3
DT50 = half-life
The concentration of hydroxyl radicals in air of 5x105 OH molecules/cm3, and the 24 hour photoperiod, are the values specified in ECHA Guidance on Information requirements and chemical safety assessment, Part R.16 Environmental exposure estimation (ECHA, 2012).
This represents a half-life for reaction of tetrahydrofurfuryl alcohol with hydroxyl radicals in air of 0.7 days.
EPA (2000) US Environmental Protection Agency. SRC AOPWIN program (v1.92a September 2010).
ECHA (2012). European Chemicals Agency. Guidance on information requirements and chemical safety assessment Chapter R.16: Environmental Exposure Estimation. Version: 2.1 October 2012. R.16.5.4.3. Photochemical reactions in the atmosphere.
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.
