Registration Dossier
Registration Dossier
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EC number: 212-783-8 | CAS number: 868-85-9
Phototransformation in water
Administrative data
- Endpoint:
- phototransformation in water
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1976
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: the test and the data collected therein can be regarded as acceptable for assessment, as they were approved by a broad scientific community. In conclusion, the study may be assessed as Klimisch 2 in accordance with Guidance Document R.7b, R.7.8.1, p. 21.
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- No information
- Author:
- Knoevenagel K, Himmelreich R (1976) Degradation of compounds containing carbon atoms by photooxidation in the presence of water. Arch Environ Contamin Toxicol 4: 324 - 333
- Reference Type:
- secondary source
- Title:
- Dimethyl phosphonate - CAS No: 868-85-9 - SIDS Initial Assessment Report.
- Author:
- OECD
- Year:
- 2 004
- Bibliographic source:
- UNEP Publications
Materials and methods
- Principles of method if other than guideline:
- Method: other (measured): according to the method of Knoevenagel and Himmelreich (1973)
- GLP compliance:
- no
Test material
- Reference substance name:
- Diethyl phosphonate
- EC Number:
- 212-091-6
- EC Name:
- Diethyl phosphonate
- Cas Number:
- 762-04-9
- Molecular formula:
- C4H11O3P
- IUPAC Name:
- diethyl phosphonate
- Details on test material:
- Instead of dimethyl phosphonate the authors tested the homologue substance diethyl phosphonate
IUCLID4 Test substance: other TS: diethyl phosphonate
Constituent 1
Study design
- Light source:
- other: high pressure mercury-vapor lamp
Results and discussion
% Degradationopen allclose all
- Test condition:
- Direct photolysis
- Test condition:
- Indirect photolysis
Any other information on results incl. tables
50 % of the theoretical CO2 expected to form from diethyl phosphonate was achieved after 28.8 hours.
SIDS (2004):
Knoevenagel and Himmelreich (1976) measured the degradation of the diethyl phosphonate with aerobic water in the presence of UV-light. 50 % of this homologue were degraded within 29 h according to the released carbon dioxide.
Applicant's summary and conclusion
- Conclusions:
- 50 % of the theoretical CO2 expected to form from diethyl phosphonate was achieved after 28.8 hours. The results of the ethyl homologue of dimethyl phosphonate indicate that dimethyl phosphonate may also be degraded by the impact of UV-light, oxygen and water.
- Executive summary:
SIDS (2004):
Knoevenagel and Himmelreich (1976) measured the degradation of the diethyl phosphonate with aerobic water in the presence of UV-light. 50 % of this homologue were degraded within 29 h according to the released carbon dioxide.
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