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Environmental fate & pathways

Phototransformation in air

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Reference
Endpoint:
phototransformation in air
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Accepted QSAR
Principles of method if other than guideline:
QSAR AOPWin v1.92
Estimation method (if used):
PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 0.5E6 OH/cm3
- OH rate constant: 63.3681 E-12 cm3/molecule-sec
- Temperature for which rate constant was calculated: 25 deg C
- 24-hr day
- Computer programme: AopWin v1.92
DT50:
6.076 h
Conclusions:
Using the QSAR AOPWin v1.92 tool, the half-life (DT50) of ethylenediamine in air is 6.076 h.
Executive summary:

A study was conducted to determine the phototransformation of ethylenediamine in air. The rate constant for elimination via hydroxyl radical reaction in atmosphere can be estimated to 63.3681 E-12 cm3/ (molecule*sec) corresponding to a half life of 6 h, using the AOPWin (EPA, 2008).

Description of key information

Key value for chemical safety assessment

Half-life in air:
6 h
Degradation rate constant with OH radicals:
0 cm³ molecule-1 s-1

Additional information

A study was conducted to determine the phototransformation of ethylenediamine in air. The rate constant for elimination via hydroxyl radical reaction in atmosphere can be estimated to 63.3681 E-12 cm3/ (molecule*sec) corresponding to a half life of 6 h, using the AOPWin (EPA, 2008).