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Environmental fate & pathways

Hydrolysis

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Administrative data

Endpoint:
hydrolysis
Type of information:
experimental study
Adequacy of study:
key study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1999
Report date:
1999

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.7 (Degradation: Abiotic Degradation: Hydrolysis as a Function of pH)
Deviations:
no

Test material

Radiolabelling:
no

Results and discussion

Dissipation DT50 of parent compoundopen allclose all
pH:
4
Temp.:
25 °C
DT50:
> 1 yr
pH:
7
Temp.:
25 °C
DT50:
> 1 yr
pH:
9
Temp.:
50 °C
Hydrolysis rate constant:
0.002 h-1
DT50:
297.5 h
Type:
(pseudo-)first order (= half-life)
Remarks on result:
other:
pH:
9
Temp.:
70 °C
Hydrolysis rate constant:
0.015 h-1
DT50:
47.29 h
Type:
(pseudo-)first order (= half-life)
Remarks on result:
other:
pH:
9
Temp.:
85 °C
Hydrolysis rate constant:
0.049 h-1
DT50:
14.02 h
Type:
(pseudo-)first order (= half-life)
Remarks on result:
other:
pH:
9
Temp.:
25 °C
Hydrolysis rate constant:
0.004 d-1
DT50:
174 d
Type:
(pseudo-)first order (= half-life)
Remarks on result:
other:

Applicant's summary and conclusion

Validity criteria fulfilled:
yes

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