Warfarin

Phototransformation in water

Administrative data

Endpoint:

phototransformation in water

Type of information:

experimental study

Adequacy of study:

supporting study

Data source

Reference

Reference 1

Reference Type:

review article or handbook

Title:

Unnamed

Year:

2009

Report date:

2009

Reference 2

Reference Type:

secondary source

Title:

Unnamed

Year:

1992

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: UBA Test Guideline "Phototransformation of chemicals in water, part A, Direct Phototransformation"

Deviations:

yes

Remarks:

Method data are not available as the report details are unpublished.

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Warfarin

EC Number:

201-377-6

EC Name:

Warfarin

Cas Number:

81-81-2

Molecular formula:

C19H16O4

IUPAC Name:

4-hydroxy-3-(3-oxo-1-phenylbutyl)-2H-chromen-2-one

Results and discussion

Quantum yield (for direct photolysis):

0

Dissipation half-life of parent compound

DT50:

>= 54 d

Test condition:

No significant degradation (<10%) after 14 days of continuous irradiation at 313 nm (20-25°C). Lower limit, DT50 ≥ 54 days in surface water calculated using the Batelle-UBA computer program using central European environmental conditions during November.