Registration Dossier
Registration Dossier
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EC number: 217-752-2 | CAS number: 1948-33-0
Dissociation constant
Administrative data
Link to relevant study record(s)
- Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- Justification for type of information:
- Data is from experimental study report
- Qualifier:
- according to guideline
- Guideline:
- other: As mentioned below
- Principles of method if other than guideline:
- Measurement of capacity of a compound to dissociate into respective ions.
- GLP compliance:
- no
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Specific details on test material used for the study:
- - Name of test material: 2-tert-butylbenzene-1,4-diol
- Molecular formula: C10H14O2
- Molecular weight: 166.219 g/mol
- Smiles notation: Oc1c(cc(O)cc1)C(C)(C)C
- InChl: 1/C10H14O2/c1-10(2,3)8-6-7(11)4-5-9(8)12/h4-6,11-12H,1-3H3
- Substance type: organic
- Physical state:solid - Dissociating properties:
- yes
- No.:
- #1
- pKa:
- 0
- Temp.:
- 30 °C
- Remarks on result:
- other: Reported value: 0.1262E-6 to 0.1264E-6
- Conclusions:
- The dissociation constant (pKa) of 2-tert-butylhydroquinone is in the range 0.0000001262 to 0.0000001264 at 30°C
- Executive summary:
The dissociation constant (pKa) of 2-tert-butylhydroquinone is in the range 0.0000001262 to 0.0000001264 at 30°C
Reference
Description of key information
The experimental pKa value for 2-tert-butylhydroquinone was found to be 0.126 E-6 at 30 °C indicating that it has dissociation properties.
Key value for chemical safety assessment
- pKa at 20°C:
- 0
Additional information
Data from other sources show much variation in pKa value. This difference may be due to method of measurement, etc. However, for the purpose of this registration and chemcial safety report, the data of key study shall be considered.
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