Registration Dossier
Registration Dossier
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EC number: 239-268-0 | CAS number: 15214-89-8
Dissociation constant
Administrative data
- Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2007
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Well documented report of guideline study conducted according to GLP.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 112 (Dissociation Constants in Water)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 2-acrylamido-2-methylpropanesulphonic acid
- EC Number:
- 239-268-0
- EC Name:
- 2-acrylamido-2-methylpropanesulphonic acid
- Cas Number:
- 15214-89-8
- Molecular formula:
- C7H13NO4S
- IUPAC Name:
- (1Z)-N-(2-methyl-1-sulfopropan-2-yl)prop-2-enimidic acid
- Details on test material:
- - Name of test material: ATBS
- Physical state: white powder
- Analytical purity: 99.4 %
- Lot/batch No.: 061202
- Expiration date of the lot/batch: 30 june 2007
- Storage condition of test material: Room temperature in the dark
- Other: Date received: 18 January 2007
Constituent 1
Results and discussion
- Dissociating properties:
- yes
Dissociation constant
- pKa:
- 2.4
- Temp.:
- 20 °C
- Remarks on result:
- other: same value for the three tests
Any other information on results incl. tables
The pKa values for each of the samples A, B and C was determined to be 2.4. The mean pKa value was determined to be 2.4
Applicant's summary and conclusion
- Conclusions:
- The pKa of ATBS was found to be 2.4
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