Registration Dossier

Administrative data

Endpoint:
phototransformation in air
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The predicted endpoint was determined using a validated computer model.

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
Gas-phase tropospheric chemistry of organic compounds: a review
Author:
Atkinson, R.
Year:
1990
Bibliographic source:
Atmos. Environ., Vol. 24A, pp. 1-41
Reference Type:
review article or handbook
Title:
Unnamed
Year:
2001
Reference Type:
publication
Title:
EPI (Estimation Programs Interface) Suite, V3.10. U.S.
Author:
U.S. EPA.
Year:
2001
Bibliographic source:
Environmental Protection Agency, Office of Pollution Prevention and Toxics, Washington, DC.

Materials and methods

Principles of method if other than guideline:
Method: other (calculated): Calculations by EPIWIN V3.10; AOPWIN V1.90.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
IUCLID4 Test substance: other TS: CAS No.: Various; Unrefined and acid treated base oils.

Results and discussion

Any other information on results incl. tables

Indirect photolysis at 25 °C
Concentration of sensitizer:        1.50 x 10 6 OH radicals/cm3
Rate constant:                             18.1757 x 10 -12 cm3/mol-sec
Half-life: See following table
Atmospheric Oxidation Half-Life, days

Structure                               

C15 

C20

C50

n-paraffin                              

0.6 

0.4 

0.2

iso-paraffin                               

0.6

0.4 

0.2

1-ring naphthene                        

0.5

0.4

0.2

2-ring naphthene                        

0.4

0.3

0.1

3-ring naphthene                        

0.4

0.3

0.1

1-ring aromatic

0.7

0.5

0.2

2-ring aromatic                             

0.2

0.2

0.1

3-ring aromatic                              

0.3

0.3

0.1

Applicant's summary and conclusion