Registration Dossier

Administrative data

Endpoint:
phototransformation in water
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Original reference not found. In SIDS it is mentioned that the Study is valid with restrictions as light intensity was not measured and no subjective indication of weather conditions provided.
Cross-referenceopen allclose all
Reason / purpose:
reference to same study
Reason / purpose:
reference to other study

Data source

Reference
Reference Type:
secondary source
Title:
SIDS Initial Assessment report for SIAM 14 - 1,3-diphenylguanidine
Author:
Anonymous
Year:
2002
Bibliographic source:
OECD - Paris, France, 26-28 march 2002

Materials and methods

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
no data
Specific details on test material used for the study:
Details on properties of test surrogate or analogue material (migrated information):
No data.

Study design

Radiolabelling:
not specified
Details on sampling:
No data.
Buffers:
No data.
Light source:
not specified
Details on light source:
No data.
Details on test conditions:
1 mg/l solutions of DPG in water were prepared in milli-Q water with 1% acetonitrile. The solutions were placed in test tubes at a 60° angle from horizontal and exposed to sunlight for 7 d.  Dark controls were mintained at 23°C. After the test some samples were analysed immediately while others were refrigerated until analysis.
Computational methods:
No data.

Results and discussion

Preliminary study:
No data.
Test performance:
No data.
% Degradationopen allclose all
% Degr.:
0
Sampling time:
7 d
Test condition:
Direct photolysis
% Degr.:
0
Sampling time:
7 d
Test condition:
Indirect photolysis
Details on results:
No data.
Results with reference substance:
No data.

Any other information on results incl. tables

No data.

Applicant's summary and conclusion

Validity criteria fulfilled:
no
Remarks:
See conclusions
Conclusions:
No photolysis was found due to exposure to sunlight for 7 d. No loss was found in dark controls..
Study valid with restrictions as light intensity was not measured and no subjective indication of weather conditions provided.
Executive summary:

Study valid with restrictions as light intensity was not measured and no subjective indication of weather conditions provided. No information is given on the pH of solutions used during the test. The results are supported by the low extinction coefficient of 1,3 -Diphenlylguanidine in the sunlight region (E300 nm <100).