Registration Dossier
Registration Dossier
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EC number: 202-510-0 | CAS number: 96-49-1
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:
- 18/12/2009 - 22/12/2009
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 112 (Dissociation Constants in Water)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Dissociating properties:
- yes
- No.:
- #1
- pKa:
- ca. 3.86
- Temp.:
- 20 °C
- Conclusions:
- The disscociation constant of ethylene carbonate was determined to be 3.86 at 20°C following a GLP study conducted in accordance with guideline OECD 112.
Reference
Although no temperature was reported it was assumed that the test was conducted under ambient temperature (20°C)
Inflection point was observed when 0.2 mL of acid was added to the test solution. Therefore the pKa of the sample is the pH of the test solution after addition of 0.1 mL of acid (half the volume of acid required to reach the inflection point).
Description of key information
The dissociation constant of ethylene carbonate was determined to be 3.86 at 20°C following a GLP study conducted in accordance with guideline OECD 112 using the titration method (Baker, 2010).
Key value for chemical safety assessment
- pKa at 20°C:
- 3.86
Additional information
Although the temperature was not reported it was assumed that the study was conducted under ambient temperature.
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