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EC number: 617-441-5 | CAS number: 83121-18-0
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Following the Atkinson calculation, the photochemical half-life for reactions with OH-radicals (12-hr day; 1.5 x 106 OH/cm3) was determined to be 1.7 days.
Key value for chemical safety assessment
- Half-life in air:
- 1.7 d
Additional information
One Study on the phototransformation in air is available.
For details please refer to Draft Assessment Report for teflubenzuron prepared according to the Commission Regulation (EU) No 1107/2009, Volume 3 – B.8 (AS) (October 2007).
RCC (1992): Investigation of the Evaporation of Nomolt (SAG 13406) from Soil and Dwraf Runner Bean. DocID according to Draft Assessment Report prepared in compliance with Regulation (EC) No 1107/2009: TZ-620-013; crossreference to Draft Assessment Report according to Regulation (EU) No 1107/2009: CA 7.2.2/01
This study is summarized in the following for sake of completeness but has however not been documented in a separate IUCLID Endpoint Study Record.
Teflubenzuron has a very low vapour pressure (1.3x10-8 Pa at 25 °C).
Relatively little loss of teflubenzuron occurred after 24 hours via evaporation from soil (10.2%) or leaves (8.3%) treated with the formulation Nomolt containing 150 g/l of teflubenzuron at a rate of 150 g a.s / ha. Teflubenzuron is not considered volatile according to BBA guidelines. No further testing is necessary.
Following the Atkinson calculation, the photochemical half-life for reactions with OH-radicals (12-hr day; 1.5 x 106 OH/cm3) was determined to be 1.7 days.
Long term transport of teflubenzuron is not expected to be of concern.
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