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EC number: 400-320-4 | CAS number: 94933-05-8
- 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

Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The test item is not rapidly biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable
- Type of water:
- freshwater
Additional information
Ready biodegradability of the test item was evaluated in an experimental study on 1 g/l aqueous solution of the test item which measured the 5-day Biochemical Oxygen Demand (BOD5), the Total Organic Carbon (TOC) using a Beckham 915A instrument, the Chemical Oxygen Demand (COD) and the bacterial inhibition by the glucose/glutamic acid modification of the BOD5 method (same concentrations as BOD5 method). BOD5 and bacterial inhibition were measured at concentrations of 1, 3.2, 10 and 32 mg/l test item without a nitrification inhibitor. A reference substance, glucose/glutamic acid, was tested at approximately a 1:47 dilution of the standard strength solution (150 mg/l of each compound) without nitrification inhibitor.
The inherent biodegradability of the test item was evaluated in an experimental study according to the OECD Guideline 302 B (1981), the Modified Zahn-Wellens Test. 251 and 250 mg/l test item was exposed to microorganisms from the secondary effluent of a domestic waste water sewage plant in test medium for 28 days, and samples were taken in in order to monitor dissolved oxygen concentration (DOC) in triplicate at 0 and 3 hours, 7, 14, 21 and 28 days of the incubation period. A negative control (inoculum in test water without test item) and a reference substance (99.5 mg/l ANILINE) were tested in parallel. pH was maintained between pH 7.0 and pH 8.5.
A substance is considered to be rapidly degradable in the environment if:
- in a 28-day ready biodegradability study, 70 % biodegradation is achieved in a test based on dissolved organic carbon (DOC) within 10 days;
- in a 28-day ready biodegradability study, 60 % biodegradation is achieved in a test based on oxygen depletion or carbon dioxide generation within 10 days;
- the ratio of BOD5/COD is ≥ 0.5 in the case that only BOD and COD data are available; or
- other convincing scientific evidence is available to demonstrate that the substance can be degraded (biotically and/or abiotically) in the aquatic environment to a level > 70 % within a 28-day period.
The BOD5 of the test item was found to be less than 3 % of COD, which is less than a ratio of 0.5, therefore the test item is not readily biodegradable. Inherent biodegradation of the test item was found to be 23 % over 28 days, which is less than 70 %, the amount required for classification. Based on these findings, the test item is not considered to be rapidly biodegradable.
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