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EC number: 444-010-7 | CAS number: 82654-98-6
- 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)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- September - November 2009
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- Activated sludge from biological sewage refinery „Pszczyna” in Pszczyna was collected in quantities of about 5 dm3 in plastic vessels. Activated sludge was immediately transported to laboratory in a period of time shorter than 60 minutes. After transport the activated sludge was sieved using a sieve with diameter of meshes equal 1 millimeter. Decantation lasted at least 60 minutes followed by draining of the supernatant. The remaining sediment was added into 10 L vessels where it was washed intensively with tap water. The sediment was intensively agitated with a glass rod and the sludge was allowed to settle for 60 minutes. The supernatant was drawed off and rinsed. The supernatant was rinsed four times until foam from the surface of water disappeared. After the last rinse the sediment was decanted in a period of time not shorter than 1h, the supernatant was drained and remaining sediment was carefully poured from the vessel to a tall beaker with a volume of 5 L so that 3/4 of sediment volume was transferred. Mineral medium was added to vessels containing the sediment, so a final volume of 4.5 L was obtained. The sediment was intensively agitationed, and the sludge was allowed to settle for 30 minutes, the supernatant was poured out. This operations were repeated three times. When the mineral medium was added for the third time the content of vessel was agitationed and intensively aerated to caused circulation of sludge suspended solids in volume of vessel. The compressed air came from aquarius aeration pump and was inflated through a cotton wool strainer and glass frit.
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 40 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- TEST CONDITIONS
- Composition of medium: according to OECD Guideline 301
- Solubilising agent used: no
- Test temperature: 22°C
- pH: 6.82 - 7.37
- pH adjusted: no
- Aeration of dilution water: no
- Suspended solids concentration: 15 mg/dm³
TEST SYSTEM
- Culturing apparatus: glass vessels of 5.0L and 10.0L volume
- Number of culture flasks/concentration: 2
- Measuring equipment: Sensomat-Measurement-System from AQUALYTIC, Germany
- Conditions: dark
SAMPLING
- Sampling frequency: after 1, 3, 5, 7, 14, 21, 23, 25, 27 and 28 days
CONTROL AND BLANK SYSTEM
- Inoculum blank: containing only inoculum (2 flasks)
- Procedure control: containing reference compound and inoculum (1 flask)
- Toxicity control: containing test substance, reference compound and inoculum (1 flask) - Reference substance:
- acetic acid, sodium salt
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 60.75
- St. dev.:
- 0.7
- Sampling time:
- 28 d
- Details on results:
- The biodegradation of the test item started after 14 days (1.64%) and increased from there on (day 21: 8.11%; day 25: 33.94%). After 28 days of the experiment biodegradation of test material was 60.75%
- Results with reference substance:
- The biodegradation of the reference substance was 69.94% after 7 days and 79.42% after 28 days of the experiment.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Within the test period of 28 days, a degradation of 60.75% was determined for the test item.
- Executive summary:
The biodegradation of the test item was determined in a manometric respirometry test according to OECD 301F. The test substance is suspended in test medium, inoculated with activated sludge of a biological sewage refinery and incubated for 28 days under aerobic conditions in the dark at 22°C. During this period, the biodegradation of the test substance is determined on the basis of O2 consumption. Within the test period of 28 days, a degradation of 60.75% was determined.
Reference
Description of key information
The test item is readily biodegradable: OECD 301F, 60.75 % degradation after 28 days
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
The biodegradation of the test item was determined in a manometric respirometry test according to OECD 301F. The test substance was suspended in test medium, inoculated with activated sludge of a biological sewage refinery and incubated for 28 days under aerobic conditions in the dark at 22°C. During this period, the biodegradation of the test substance was determined on the basis of O2 consumption. Within the test period of 28 days, a degradation of 60.75% was determined.
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