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Diss Factsheets
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EC number: 407-420-7 | 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
Endpoint summary
Administrative data
Description of key information
Additional information
It should be noted that the test substance is not considered as posing a hazard to the aquatic environment.
The test substance, Reactive Navy H112323, is a solid under all environmental conditions and is highly soluble in water. It has a low volatility (based on the high melting / boiling point and high molecular weight) and a low affinity for soil / sediment (based on the partition coefficient value of log Kow < -5 and an adsorption coefficient log Koc of 2.5). This was confirmed for sandy loam test soils (Kenny Hill) with a Koc value increasing over time from 180 to 320 (log Koc 2.3 to 2.5), but not for silty clay loam test soils (Nebo). With the Nebo soil 98% of Reactive Navy H112323 was adsorbed within 2 hours with virtually all the test substance having been adsorbed after 16 hours, resulting in Koc values of 15000 to >160000 (log Koc 4.2 to 5.2). As such, for sandy loan, any environmental release will result in virtually all of the substance compartmentalising into water compartments, with little release directly to atmosphere or compartmentalising to soil/sediment compartments. Whereas for clay loam almost all of the test substance will be adsorbed without subsequent desorption.
Reactive Navy H112323 displayed low ready or inherent biodegradability. This indicates that it is unlikely to achieve a half-life of less than 40 or 60 days within freshwater or marine water, respectively, attributed to ready biodegradation alone. However, the substance showed hydrolysis at environmentally relevant pH (pH 4: t½ = 8.4 d at 50°C), indicating the potential for significant removal by hydrolysis. As such, degradation is anticipated via this route.Studies on direct phototransformation in water are not available but it was found that the sulfonated azo dyes can be destroyed by UV photooxidation process (Saliha 2005). The kinetics of the degradation depends on the azo, benzene and naphthalene groups of the dyes. It was found that the first step of the degradation is related to cleavage of azo bond of the molecule and naphthalene ring which leads to further degradation until complete mineralization. It is concluded therefore, that abiotic processes would contribute significantly to the depletion of the substance within the environment.
Reactive Navy H112323 has a measured log Kow of <-5. This value indicates that possible bioaccumulation in the food chain is not anticipated. In a bioaccumulation study in carps, the level of accumulation was below the limit of quantification for both test concentrations. Given the fact that the substance is subject to hydrolysis at biologically relevant pH, it is anticipated that bioaccumulation of the substance itself would not occur, as hydrolytic effects in association with metabolic effects would result in removal of the substance.
Finally, Reactive Navy H112323 demonstrates low toxicity in ecotoxicological and toxicological studies therefore in the event of exposure to environmental organisms, effects due to secondary poisoning can be excluded.
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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