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EC number: 228-779-4 | CAS number: 6358-57-2
- 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 plants other than algae
Administrative data
Link to relevant study record(s)
Description of key information
Frond number: ErC50 (7d): 1.347 mg/l as growth rate based on measured concentrations.
ErC10 (7d): 0.366 mg/l as growth rate based on measured concentrations.
Key value for chemical safety assessment
- EC50 for freshwater plants:
- 1.347 mg/L
- EC10 or NOEC for freshwater plants:
- 0.366 mg/L
Additional information
Acid Red 111 was tested for toxicity to Duckweed (Lemna gibba) using 20X AAP medium as dilution water. A preculture was prepared 7 days before the test with healthy colonies with 3 -4 fronds.
Based on 2 preliminary experiments, nominal concentrations of 3.13, 6.25, 12.5, 25.0, 50.0 and 100 mg/l were used in the main study. Measured concentrations deviated more than 20 % from the nominal ones, thus results were based on geometric mean of measured concentrations. As test substance was not stable in test medium, based on the analytical validation, the main test was run as semi-static.
A control group in 6 replicates and 6 concentrations in 3 replicates each were exposed for 7 days; test solution were prepared upon dilution of a stock solution with 20X AAP medium in 400 ml Petri dishes-covered glass beakers filled with 160 ml test solutions. Colonies of plants were added to each vessel: 2 colonies with 4 fornds and 1 colony with 3 fronds. Assessment of growth and morphological changes was done on days 3, 5 and 7.
Main test was run as a semi-static test with renewals on day 3 and 5.
An analytical monitoring was done at start and end of each renewal period, by HPLC method with VIS detection.
For both response variables, i.e. growth rate and yield, NOEC, LOEC and ECx values were determined for both frond number and dry weight.
All validity criteria were met.
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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