Registration Dossier
Registration Dossier
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EC number: 930-930-0 | CAS number: -
Dissociation constant
Administrative data
Link to relevant study record(s)
- Endpoint:
- dissociation constant
- Type of information:
- other: Data from a handbook
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Principles of method if other than guideline:
- No method provided.
- GLP compliance:
- no
- Dissociating properties:
- yes
- No.:
- #1
- pKa:
- > 14
- Temp.:
- 25 °C
- Remarks on result:
- other: pKb < 0
- No.:
- #2
- pKa:
- 12.8
- Temp.:
- 25 °C
- Remarks on result:
- other: pKb = 1.2
- Conclusions:
- The literature value available for the dissociation constant of calcium dihydroxide at 25 °C is: pKb1< 0 for Ca(OH)2 and pKb2= 1.2 for Ca(OH)+.
- Executive summary:
The literature value available for the dissociation constant of calcium dihydroxide at 25 °C is: pKb1< 0 for Ca(OH)2 and pKb2= 1.2 for Ca(OH)+.
- Endpoint:
- dissociation constant
- Type of information:
- other: Data from a handbook
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Principles of method if other than guideline:
- No method provided.
- GLP compliance:
- no
- Dissociating properties:
- yes
- No.:
- #1
- pKa:
- 11.62
- Temp.:
- 25 °C
- Remarks on result:
- other: Calculated
- Conclusions:
- The substance has a pKa = 11.62 at 25ºC.
- Executive summary:
The literature value available for the dissociation constant of hydrogen peroxide at 25 °C is K = 2.4e-12 and pKa = 11.62.
Referenceopen allclose all
The literature value available for the dissociation constant of calcium dihydroxide at 25 °C is:
pKb1 < 0 for Ca(OH)2
pKb2 = 1.2 for Ca(OH)+
The literature value available for the dissociation constant of hydrogen peroxide at 25 °C is K = 2.4e-12 and pKa = 11.62.
Description of key information
Caldium peroxide hydrolyses to calcium dihydroxide and hydrogen peroxide. Thus, the dissociation constants of the calcium dihydroxide and hygrogen peroxide have been included.
Key study. Data from handbook. The dissociation constant of calcium dihydroxide at 25 °C is: pKb1< 0 for Ca(OH)2 and pKb2= 1.2 for Ca(OH)+.
Key study. Data from handbook. The dissociation constant of hydrogen peroxide at 25 °C is K = 2.4e-12 and pKa = 11.62.
Key value for chemical safety assessment
Additional information
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