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[3-(Hydroxy-kO)-4-{[2-(hydroxy-kO) carbopolycyl-1-yl]diazenyl-kN1}-6-substituted-carbopolycyle-1-sulfonato(3-)]chromium, reaction products with hydrogen amino-4-hydroxy carbopolycyle-2-sulfonate, sodium 2-[(aminophenyl)sulfonyl]ethyl sulfate, amino-5-substituted-phenol and 2,4,6-trichloro-1,3,5-triazine
EC number: 454-620-5 | CAS number: 854270-57-8
- 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
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The 72-h ErC50 of 46.9 mg/L and the 72-h NOErC of 3.2 mg/L in freshwater algae are used in the assessment.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 46.9 mg/L
- EC10 or NOEC for freshwater algae:
- 3.2 mg/L
Additional information
The toxicity of the test substance towards aquatic algae was investigated in a GLP-compliant test according to OECD 201 (RCC, 2005).
In this study, freshwater alga (Scenedesmus subspicatus) were exposed for 72 hours to nominal concentrations of 0, 1.0, 3.2, 10, 32 and 100 mg test substance/L under static conditions. In addition, to differentiate between a direct toxic effect on algal growth, as induced by the test substance, and an indirect effect on growth caused by light absorption of the coloured test substance in solution, alga were exposed to medium without test substance under varying reduced light conditions. The analytically determined test item concentrations in the test media varied in the range from 95 to 108% of the nominal values indicating that the test item was stable during the test period of 72 hours under the conditions of the test. Therefore, the reported biological results are based on the nominal concentrations of the test item.
Alga exposed to concentrations from 10 mg/L test substance showed increased inhibition on growth rate and biomass compared to alga exposed to test media without test substance under varying reduced light conditions. Therefore, only a part of the algal growth inhibition was obviously caused by the pure light effect and at the higher test concentrations a real toxic effect of the test item on algal growth cannot be excluded. For this reason, the results of the experimental part in which algae are exposed to the test substance are taken into consideration for the determination of toxicity (as in a usual algae test). From the available data the ErC50 and EbC50 values were calculated to be 46.9 and 20.4 mg/L, respectively. The NOEC was determined at 3.2 mg/L for both endpoints.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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