Registration Dossier

Administrative data

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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1993
Report Date:
1993

Materials and methods

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

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Radiolabelling:
not specified

Results and discussion

Dissipation DT50 of parent compoundopen allclose all
pH:
4
Temp.:
50 °C
Hydrolysis rate constant:
0.08 h-1
DT50:
9 h
Type:
(pseudo-)first order (= half-life)
pH:
4
Temp.:
37 °C
Hydrolysis rate constant:
0.024 h-1
DT50:
28
Type:
(pseudo-)first order (= half-life)
pH:
4
Temp.:
25 °C
Hydrolysis rate constant:
0.007 h-1
DT50:
93 h
Type:
(pseudo-)first order (= half-life)
pH:
9
Temp.:
80 °C
Hydrolysis rate constant:
0.184 h-1
DT50:
4 h
Type:
(pseudo-)first order (= half-life)
pH:
7
Temp.:
70 °C
Hydrolysis rate constant:
0.057 h-1
DT50:
12 h
Type:
(pseudo-)first order (= half-life)
pH:
9
Temp.:
25 °C
Hydrolysis rate constant:
0 h-1
DT50:
6 500 h
Type:
(pseudo-)first order (= half-life)

Applicant's summary and conclusion

Validity criteria fulfilled:
yes