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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Dissociation constant

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Administrative data

Endpoint:
dissociation constant
Type of information:
other: handbook
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
Handbook data are considered from a trusted source. Data have been taken from many sources, including both compilations and the primary literature - where conflicts were found, the value deemed most reliable was chosen. The reference was peer-reviewed. In addition, the reference sources are indicated although not leading to sufficient information on the material & method used.

Data source

Reference
Reference Type:
review article or handbook
Title:
Physical constants of inorganic compounds, 4-78
Author:
Lide, D.R. (ed)
Year:
1999
Bibliographic source:
CRC Handbook of Chemistry and Physics, 80th ed., 1999-2000, New York: CRC Press.

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
method followed unknown, data from handbook
GLP compliance:
not specified

Test material

Constituent 1
Reference substance name:
Sulphuric acid (H2SO4)
IUPAC Name:
Sulphuric acid (H2SO4)

Results and discussion

Dissociation constant
No.:
#2
pKa:
ca. 1.99
Temp.:
25 °C
Remarks on result:
other: for H2SO4

Applicant's summary and conclusion