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Diss Factsheets
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EC number: 466-490-7 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Dissociation constant
Administrative data
Link to relevant study record(s)
- Endpoint:
- dissociation constant
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Study period:
- Study completion date - 28 June 2006.
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- Estimation using Taft and Hammett Correlation equation
- GLP compliance:
- no
- Specific details on test material used for the study:
- Identity: FAT 40827/A
Batch: T2 5572 BOP 01/06
Purity: determined in this study
Appearance: black sticky powder
Expiration date: 28.02.2011
Storage: at room temperature - Dissociating properties:
- yes
- No.:
- #1
- pKa:
- -6.7
- Remarks on result:
- other: ArSO3H, completely dissociated in aqueous solution.
- No.:
- #2
- pKa:
- ca. 1.65 - ca. 1.85
- Remarks on result:
- other: Diamino substituted chlorotriazine/fluorotriazine, neutral form in the environmental relevant pH range
- No.:
- #3
- pKa:
- > 22
- Remarks on result:
- other: Amide, no relevance for the environmental behaviour
- Conclusions:
- The overall behaviour of FAT40827/A in aqueous solutions will be dominated by the strongly arene acidic sulfonic acid groups (ArSO3H). Therefore, the molecule will be negatively charged and is present in its anionic form over the whole environmentally relevant pH range from approximately pH = 4 to 9.
- Executive summary:
The purpose of this study was to estimate the dissociation constants (pKa values) of FAT 40827/A.
The dissociation of a chemical in water is of importance in assessing its impact upon the environment. It governs the form of the test item, which in turn determines its behaviour and transport. It may affect the adsorption of the chemical on soils and uptake into biological cells.
The overall behaviour of FAT 40827/A in aqueous solutions will be dominated by the strongly arene acidic sulfonic acid groups (ArSO3H). Therefore, the molecule will be negatively charged and is present in its anionic form over the whole environmentally relevant pH range from approximately pH = 4 to 9.
Reference
The overall behaviour of FAT 40827/A in aqueous solutions will be dominated by the strongly arene acidic sulfonic acid groups (ArSO3H). Therefore, the molecule will be negatively charged and is present in its anionic form over the whole environmentally relevant pH range from approximatively pH = 4 to 9.
Description of key information
The overall behaviour of FAT 40827/A in aqueous solutions will be dominated by the strongly arene acidic sulfonic acid groups (ArSO3H, pKa = -6.7). Therefore, the molecule will be negatively charged and is present in its anionic form over the whole environmentally relevant pH range from approximately pH = 4 to 9.
Key value for chemical safety assessment
- pKa at 20°C:
- -6.7
Additional information
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.
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