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Physical & Chemical properties

Dissociation constant

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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:
1945
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
Name:
Unnamed
Type:
Constituent
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