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Environmental fate & pathways

Phototransformation in air

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phototransformation in air
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
supporting study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method

Data source

Materials and methods

Results and discussion

Applicant's summary and conclusion

Executive summary:

INDIRECT PHOTOLYSIS in air  OH radical induced indirect photolysis of C20/C22 ATQ can be estimated with US EPA AOPWIN Program estimating low degradation half-lives (C20 homologue 9.7h, C22 homologue 9h). But as C20/C22 ATQ has a low vapour pressure, high water solubility and therefore a low Henry’s Law Constant of  <1.5*10-5 Pa*m3/mole (see IUCLID Sections 4.6 & 4.8), volatilisation is not an exposure route which has to be considered.