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Diss Factsheets
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EC number: 255-217-5 | CAS number: 41098-56-0
- 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
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Under test conditions no biodegradation observed
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
No ready biodegradation was tested on the substance, but according to the estimation modelling BIOWIN v.4.10, the substance is predicted as non biodegradable; all substances of the Stilbene Fluorescent Whitening Agents category are predicted as non readily biodegradable and for many members of the category readily and inherently biodegradability tests have been performed confirming the previsions (see the Category Justification Report attached to the section 13).
A summary of a performed Zahn Wellens test indicates 18.7 % of adsorption after 3h.
The studies performed on 3a-DSA, the analogues subsatnces, are reported here as a Weight of Evidence. Both the substance under registration and the analogues are hexasulphonated sodium salts. The diethylamino substituent is less polar, less reactive and makes the molecule slightly less soluble compared to the dihydroxyethylamino derivative (201 vs. 278 g/l); the latter can therefore considered as a representative conservative analogous for the biodegradability endpoint.
No ready biodegradation was tested on the substance, but some existing information are summarized, reporting data about BOD5 and inherent biodegradation (Ciba-Geigy 1995 - Zahn Wellens OECD 302B). The Zahn Wellens study reports a variation in the DOC in the first 5 days of about 76 %, afterwards no or negligible degradation was observed. The existing BOD5 measurements (Whitehead M. 1990 and Ciba-Geigy 1995) indicate respectively no oxygen consumption and 10 % of oxygen consumption in the first 5 days, supporting the hypothesis that the DOC removal in the first 5 days is not related to biodegradation process, but to a slow adsorption process.
In conclusion, the substance can be considered as neither readily nor inherently biodegradable.
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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