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EC number: 605-399-0 | CAS number: 165252-70-0
Dissociation constant
Administrative data
Link to relevant study record(s)
- Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 14/09/1999 - 15/03/2000
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP, Guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 112 (Dissociation Constants in Water)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7370 (Dissociation constants in water)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: EU Annex IIA Point 2.9.4
- Deviations:
- no
- GLP compliance:
- yes
- Dissociating properties:
- yes
- No.:
- #1
- pKa:
- 12.46
- Temp.:
- 20 °C
- Remarks on result:
- other: Dinotefuran solution pH 11.6; Absorbance at 268 nm = 0.603
- No.:
- #2
- pKa:
- 12.6
- Temp.:
- 20 °C
- Remarks on result:
- other: Dinotefuran solution pH 11.9; Absorbance at 268 nm = 0.581
- No.:
- #3
- pKa:
- 12.62
- Temp.:
- 20 °C
- Remarks on result:
- other: Dinotefuran solution pH 12.2; Absorbance at 368 nm = 0.518
- No.:
- #4
- pKa:
- 12.73
- Temp.:
- 20 °C
- Remarks on result:
- other: Dinotefuran solution pH 12.5; Absorbance at 268 nm = 0.455
- No.:
- #5
- pKa:
- 12.82
- Temp.:
- 20 °C
- Remarks on result:
- other: Dinotefuran solution pH 12.8; Absorbance at 268 nm = 0.384
- Conclusions:
- pKa = 12.6
(pH range 11.6 – 12.8) - Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 21/08/1995 - 29/07/1998
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP, Guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 112 (Dissociation Constants in Water)
- Deviations:
- no
- GLP compliance:
- yes
- Dissociating properties:
- no
- Conclusions:
- Dinotefuran does not dissociate over the environmentally significant pH range.
No dissociation (pH range 1.4 – 12.3)
Referenceopen allclose all
Description of key information
Dinotefuran does not dissociate over the environmentally significant pH range. No dissociation (pH range 1.4 – 12.3)
Key value for chemical safety assessment
- pKa at 20°C:
- 12.6
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