2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol)

Hydrolysis

Administrative data

Endpoint:

hydrolysis

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: Body responsible for the test

Data source

Reference

Reference Type:

other: Body responsible for the test

Title:

Unnamed

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: Directive 92/CEE C

Deviations:

not specified

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Body responsible for the test

IUPAC Name:

Body responsible for the test

Radiolabelling:

not specified

Study design

Analytical monitoring:

not specified

Results and discussion

Transformation products:

not specified

Dissipation DT50 of parent compound

Dissipation DT50 of parent compound 1

pH:

4

Temp.:

50 °C

Hydrolysis rate constant:

0 s-1

DT50:

276 h

Dissipation DT50 of parent compound 2

pH:

4

Temp.:

60 °C

Hydrolysis rate constant:

0 s-1

DT50:

218 h

Dissipation DT50 of parent compound 3

pH:

4

Temp.:

70 °C

Hydrolysis rate constant:

0 s-1

DT50:

185 h

Dissipation DT50 of parent compound 4

pH:

7

Temp.:

50 °C

Hydrolysis rate constant:

0 s-1

DT50:

341 h

Dissipation DT50 of parent compound 5

pH:

7

Temp.:

60 °C

Hydrolysis rate constant:

0 s-1

DT50:

152 h

Dissipation DT50 of parent compound 6

pH:

7

Temp.:

70 °C

Hydrolysis rate constant:

0 s-1

DT50:

76.1 h

Dissipation DT50 of parent compound 7

pH:

9

Temp.:

50 °C

Hydrolysis rate constant:

0 s-1

DT50:

888 h

Applicant's summary and conclusion

Validity criteria fulfilled:

not specified

Conclusions:

Half-life estimated at 25°C:
- pH=4: 488h
- pH=7: 120d
- pH=9: >1 yr