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EC number: 425-220-8 | CAS number: 5945-33-5
Hydrolysis
Administrative data
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- publication
- Title:
- the study of hydrolysis of BDP
- Year:
- 2 000
- Bibliographic source:
- National Occupation Health and Safety Commission
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 111 (Hydrolysis as a Function of pH)
- GLP compliance:
- not specified
Test material
- Reference substance name:
- -
- EC Number:
- 425-220-8
- EC Name:
- -
- Cas Number:
- 5945-33-5
- Molecular formula:
- C39H34O8P2
- IUPAC Name:
- (1-methylethylidene)di-4,1-phenylenetetraphenyl diphosphate
Constituent 1
- Radiolabelling:
- no
Study design
- Analytical monitoring:
- not specified
- Details on sampling:
- Incubating stoppered flasks containing(nominally) 0.25 mg/L in buffer solutions at PH 4,7 and 9 for 5 days.
Results and discussion
Dissipation DT50 of parent compoundopen allclose all
- pH:
- 4
- Temp.:
- 25 °C
- DT50:
- > 1 yr
- Type:
- other: The half life of BDP was greater than 1 year.
- pH:
- 7
- Temp.:
- 25 °C
- DT50:
- > 1 yr
- Type:
- other: The half life of BDP was greater than 1 year.
- pH:
- 9
- Temp.:
- 25 °C
- DT50:
- > 1 yr
- Type:
- other: The half life of BDP was greater than 1 year.
Any other information on results incl. tables
Hydrolytic degradation of the compound was studied as a function of pH by incubating stoppered flasks containing (nominally) 0.25 mg/LBDPin buffer solutions at50 ±andpH 4, 7 and 9 for 5 days. The concentration of the compound in the solutions was determined using HPLC at various times over the 5 day (120 hour) test period. Very little degradation was observed in any of the buffers over the 5 day test period, with the maximum loss of 5% of initial concentration observed in the pH 9 buffer.
Applicant's summary and conclusion
- Conclusions:
- The half life of hydrolytic degradation for BDP in 25 °C is greater than 1 year at environmental pH 4-9.
- Executive summary:
Hydrolytic degradation of the compound was studied as a function of pH (Hogg A S, 1997) by incubating stoppered flasks containing (nominally) 0.25 mg/L in buffer solutions at pH 4, 7 and 9 for 5 days. The concentration of the compound in the solutions was determined using HPLC at various times over the 5 day (120 hour) test period. Very little degradation was observed in any of the buffers
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