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EC number: 250-333-2 | CAS number: 30772-79-3
- 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
A study was performed to assess the effect of the test material on the growth of the green alga Pseudokirchneriella subcapitata. The method followed that described in the OECD TG No 201. Following a preliminary range-finding test, Pseudokirchneriella subcapitata was exposed for 72 hours to 8 concentrations of the test substance, prepared from a stock solution of the test material prepared at 100 mg/L (three replicate flasks per concentration), under constant illumination and shaking at a temperature of 21 - 23°C.
Samples were taken from all treatments at t = 0 , 24, 48 and 72 h and analysed with a validated GC-FID method. At the start of the test, the actual test concentrations were generally in agreement with nominal. The concentrations decreased significantly during the test period. The decreases at the lower concentrations were more significant than those at the higher concentrations. The decrease in the solution incubated without algae (3.2 mg/L) was also less significant than the decrease in the same solution with algae indicative for an adsorptive effect.
Based on the fact that the actual test concentrations decreased to less than 80% of the nominal test concentrations, the geometric mean concentrations were used for calculation of effect concentrations.
Nominal concentrations of 0.032, 0.10, 0.32, 1.0, 3.2, 10, 32 and 100 mg/L corresponded with geometric mean measured concentrations of0.025, 0.028, 0.047, 0.17, 1.0, 6.9, 20 and 66 mg/L, respectively.
Statistically significant inhibition of growth rate was found at geometric mean measured concentrations of 0.32 mg/L and higher, however, the effect observed at 1.0 mg/L was considered biologically insignificant (<10%). Therefore this value is used as NOEC.
The ErC10 and ErC50 based on geometric mean measured concentrations were 4.7 and 9.5 mg/L, respectively
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 9.5 mg/L
- EC10 or NOEC for freshwater algae:
- 4.7 mg/L
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.