Registration Dossier
Registration Dossier
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EC number: 202-691-6 | CAS number: 98-67-9
Dissociation constant
Administrative data
- Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- secondary literature
Data source
Reference
- Reference Type:
- secondary source
- Title:
- Journal of Research of the National Bureau of Standards (United States).
- Author:
- Sager et al.
- Year:
- 1 945
- Bibliographic source:
- vol. 35, p. 521,529, 530, cited in REAXYS, Registry No.1869034, query date 2016-11-28
Materials and methods
Test guideline
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- spectrophotometric
- GLP compliance:
- no
Test material
- Reference substance name:
- 4-hydroxybenzenesulphonic acid
- EC Number:
- 202-691-6
- EC Name:
- 4-hydroxybenzenesulphonic acid
- Cas Number:
- 98-67-9
- Molecular formula:
- C6H6O4S
- IUPAC Name:
- 4-hydroxybenzenesulfonic acid
Constituent 1
- Specific details on test material used for the study:
- Name of test material (as cited in study report): 4-HYDROXYPHENYLSULFONIC ACID
Analytical purity: pure (not specified)
Results and discussion
- Dissociating properties:
- yes
Dissociation constantopen allclose all
- No.:
- #1
- pKa:
- 4.51
- Temp.:
- 25 °C
- Remarks on result:
- other: 1/apparent
- No.:
- #2
- pKa:
- 9.33
- Temp.:
- 25 °C
- Remarks on result:
- other: 2/apparent
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
