Registration Dossier
Registration Dossier
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EC number: 248-326-4 | CAS number: 27213-90-7
Dissociation constant
Administrative data
- Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 1983
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
Data source
Reference
- Reference Type:
- publication
- Title:
- Kirk-Othmer Encyclopedia of Chemical Technology
- Author:
- John Wiley & Sons, Inc
- Year:
- 1 983
- Bibliographic source:
- Kirk-Othmer Encyclopedia of Chemical Technology
Materials and methods
- Principles of method if other than guideline:
- Data published
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Sodium diisobutylnaphthalenesulphonate
- EC Number:
- 248-326-4
- EC Name:
- Sodium diisobutylnaphthalenesulphonate
- Cas Number:
- 27213-90-7
- Molecular formula:
- Not applicable (UVCB substance)
- IUPAC Name:
- sodium 2,3-bis(2-methylpropyl)naphthalene-1-sulfonate
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
- Dissociating properties:
- yes
Dissociation constant
- Remarks on result:
- other: Sulfonate anions are the conjugate bases of sulfonic acids. Sulfonic acids are such strong acids, that in general they can be considered greater than 99% ionized (pKa values for sulfonic acids is ca. −2.8).
Applicant's summary and conclusion
- Conclusions:
- The substance is mainly constituted of sodium salts of diisobutyl naphthalene sulfonic acid. Sulfonate anions are the conjugate bases of sulfonic acids, that are very strong acids (pKa ca. -2.8), totally dissociated in water.
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