Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 225-935-3 | CAS number: 5160-02-1
Dissociation constant
Administrative data
- Endpoint:
- dissociation constant
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: authoritative document
Data source
Reference
- Reference Type:
- secondary source
- Title:
- SIDS Initial Assessment Report for 9th SIAM
- Author:
- OECD
- Year:
- 1 999
- Bibliographic source:
- Paris, 29 June - ist July 1999
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: no data
- Principles of method if other than guideline:
- other: calculated
- GLP compliance:
- no
Test material
- Reference substance name:
- Barium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]toluene-4-sulphonate]
- EC Number:
- 225-935-3
- EC Name:
- Barium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]toluene-4-sulphonate]
- Cas Number:
- 5160-02-1
- Molecular formula:
- C17H13ClN2O4S.1/2Ba
- IUPAC Name:
- barium(2+) bis(5-chloro-2-[(1E)-2-(2-hydroxynaphthalen-1-yl)diazen-1-yl]-4-methylbenzene-1-sulfonate)
- Test material form:
- solid: nanoform
- Details on test material:
- Test materials used in this dossier are all considered to fall under the definition of nano-materials according to the European Commission Recommendation 2011/696/EU as the synthesis and manufacturing of this pigment always yields particulate material with a fine particle size distribution.
Constituent 1
Results and discussion
- Dissociating properties:
- yes
Dissociation constantopen allclose all
- No.:
- #1
- pKa:
- -5.49
- Temp.:
- 20 °C
- Remarks on result:
- other: sulfonate group
- No.:
- #2
- pKa:
- 8.96
- Temp.:
- 20 °C
- Remarks on result:
- other: phenolic group
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.
