Registration Dossier

Administrative data

Endpoint:
phototransformation in soil
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
publication
Title:
Intermediates Produced in the Flash Photolysis of Acetone and Amides in Aqueous Solution.
Author:
Nakashima M and Hayon E
Year:
1971
Bibliographic source:
J Phys Chem 75: 1910-1914.

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Method: other (measured): Flash-photolysis test
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Test type: air-free 20 mM acetone solution


TS-Freetext:
aqueous solution of acetone and N-methylacetamide

Study design

Analytical monitoring:
not specified
Light spectrum: wavelength in nm:
> 200
Details on test conditions:
- flash photolysis apparatus
- energy of flashes: 2000-3000 J
- water purified by triple distillation, radiolysis and photolysis
- deoxygenation of solutions by sparging with prepurified nitrogen
Duration of test at given test condition
Initial conc. measured:
14.6 other: g/l

Results and discussion

Spectrum of substance
Parameter:
max lambda
Value:
340 nm

Any other information on results incl. tables

- Intermediates observed in the acetone-sensitized photochemical decomposition of amides in aqueous solution at pH 5.5
- system: 10 mM (581 mg/l) acetone + 0.2 M (14.6 g/l) N-methylacetamide
- max. lambda: 340 nm
- second order rate constant: 1.8E09 M^-1 s^-1

Applicant's summary and conclusion