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EC number: 211-989-5 | CAS number: 732-26-3
- 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 microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The EC50 was determined to be >1000 mg/L.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 1 000 mg/L
Additional information
A single data source was available to address this endpoint. The study was assigned a reliability score of 2 according to the criteria of Klimisch et al. (1997) and has therefore been used as the key value for this endpoint.
The potential of the test material to inhibit activated sludge was investigated in a study which was conducted in broadly in accordance with the standardised guideline OECD 209.
A mixed population of activated sewage sludge microorganisms from a predominantly domestic sewage source was exposed to the test material for a contact time of 3 hours. Following a preliminary toxicity test, the concentration tested was limit value of 1000 mg/L.
The sample was maintained at 21°C with continuous aeration and used on the day of collection. The pH was buffered to pH 7.3 with sodium hydroxide solution and the suspended solids level equal to 3.7 g/L prior to use.
The percentage inhibition of growth caused by the test material was assessed by measuring the O₂ consumption rates. The test material caused 9 % inhibition of growth.
Under the conditions of this study the EC50 was determined to be >1000 mg/L.
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