Registration Dossier

Diss Factsheets

Administrative data

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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report date:
2007

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.7 (Degradation: Abiotic Degradation: Hydrolysis as a Function of pH)

Test material

Constituent 1
Test material form:
liquid: viscous
Radiolabelling:
no

Results and discussion

Dissipation DT50 of parent compoundopen allclose all
pH:
4
Temp.:
12 °C
DT50:
257.4 d
Type:
(pseudo-)first order (= half-life)
Remarks on result:
other:
pH:
4
Temp.:
25 °C
Hydrolysis rate constant:
0.019 d-1
DT50:
853 h
Type:
(pseudo-)first order (= half-life)
pH:
4
Temp.:
50 °C
Hydrolysis rate constant:
0.041 d-1
DT50:
405 h
Type:
(pseudo-)first order (= half-life)
pH:
4
Temp.:
60 °C
Hydrolysis rate constant:
0.061 d-1
DT50:
273 h
Type:
(pseudo-)first order (= half-life)
pH:
4
Temp.:
70 °C
Hydrolysis rate constant:
0.071 d-1
DT50:
241 h
Type:
(pseudo-)first order (= half-life)
pH:
7
Temp.:
12 °C
DT50:
104.7 d
Type:
(pseudo-)first order (= half-life)
Remarks on result:
other:
pH:
7
Temp.:
25 °C
Hydrolysis rate constant:
0.725 d-1
DT50:
23 h
Type:
(pseudo-)first order (= half-life)
pH:
7
Temp.:
50 °C
Hydrolysis rate constant:
0.321 d-1
DT50:
52 h
Type:
(pseudo-)first order (= half-life)
pH:
7
Temp.:
60 °C
Hydrolysis rate constant:
0.19 d-1
DT50:
93 h
Type:
(pseudo-)first order (= half-life)
pH:
7
Temp.:
70 °C
Hydrolysis rate constant:
0.174 d-1
DT50:
98 h
Type:
(pseudo-)first order (= half-life)
pH:
9
Temp.:
12 °C
DT50:
92.9 d
Type:
(pseudo-)first order (= half-life)
Remarks on result:
other:
pH:
9
Temp.:
25 °C
Hydrolysis rate constant:
0.119 d-1
DT50:
140 h
Type:
(pseudo-)first order (= half-life)
pH:
9
Temp.:
50 °C
Hydrolysis rate constant:
0.158 d-1
DT50:
107 h
Type:
(pseudo-)first order (= half-life)
pH:
9
Temp.:
60 °C
Hydrolysis rate constant:
0.171 d-1
DT50:
98 h
Type:
(pseudo-)first order (= half-life)
pH:
9
Temp.:
70 °C
Hydrolysis rate constant:
0.191 d-1
DT50:
87 h
Type:
(pseudo-)first order (= half-life)

Applicant's summary and conclusion