Registration Dossier

Environmental fate & pathways

Additional information on environmental fate and behaviour

Administrative data

Endpoint:
additional information on environmental fate and behaviour
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study conducted according to generally accepted scientific principles and described in detail

Data source

Reference
Reference Type:
publication
Title:
Effect of polar substituents on autoxidation of phenols
Author:
Moussavi M
Year:
1979
Bibliographic source:
Water Res 13, 1125 - 1128

Materials and methods

Test guideline
Qualifier:
no guideline followed
GLP compliance:
no
Type of study / information:
Abiotic oxidation in aqueous solution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Purity: >99%

Results and discussion

Any other information on results incl. tables

Kinetic constants of autooxidation reactions at 25°C: 

pH

k [h-1]

DT50 [h]

7.0

6.24*10E-3

111

8.0

1.68*10E-2

41

9.0

8.22*10E-1

0.84

 

Applicant's summary and conclusion

Conclusions:
Hydroquinone was shown to be rapidly oxidized in aqueous solution. The reaction rate is dependent on pH.