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EC number: 931-333-8 | CAS number: 147170-44-3
- 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
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
The ultimate biodegradation of Coco AAPB was investigated in two guideline studies. Based on a weight of evidence approach a mean elimination of
99 % was calculated. A further key study investigating the biodegradability of C8 -18 and C18 unsatd. AAPB in seawater is available.
Key value for chemical safety assessment
Additional information
Adequate and reliable data on the ultimate biodegradation and the biodegradability in seawater are available for C8-18 and C18 unsatd. AAPB (Coco AAPB).
Ultimate biodegradability: Aerobic Sewage Treatment
Data on the ultimate biodegradation of C8 -18 and C18 unsatd. AAPB were obtained from two guideline studies (OECD 303 A and EU Method C.10). The results were within the normal scientific variation of different tests. Therefore, based on the reliable results a mean elimination of 99 % was calculated for the AAPBs using a weight of evidence approach.
The ultimate biodegradation of C8 -18 and C18 unsatd. AAPB was investigated in a study conducted according to a modification of OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units). The test material was treated in a Porous Pot Activated Sludge Plant treating predominantly domestic sewage operating at a SRT of 6 d and a HRT of 6 h. The test and control plants were acclimatised at 20°C to the operating conditions and to sodium acetate for a period of 27 weeks. In the course of the definitive test, the 2 plants were coupled once a week after day 78 by interchanging half of the mixed liquor in each plant. The ultimate biodegradation (ratio DOC removal of control/DOC removal of test item) was determined to be 96.8-105.2 % (95 % confidence limit) during the test duration of 161 d. On the basis of the results, there was no evidence for the formation of water soluble residues from the principal component, C8 -18 and C18 unsatd. AAPB or of the minor present ingredients present in the sample. A significant difference in the amount of biomass produced by the two plants was determined. In the test plant receiving the test material, more biomass was produced in comparison with the control plant which received sodium acetate. The test item can therefore be considered as having no adverse effect on growth of sewage organisms. The student's t-value indicated no significant difference in the amount of nitrification attained by the two plants.
In a further study, the ultimate biodegradability of C8 -18 and C18 unsatd. AAPB AAPB was investigated according to OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units) and EU Method C.10 (Biodegradation: Activated Sludge Simulation Test). The test item proved to be easily biodegradable and/or accessible to elimination (97 +/- 4 % DOC removal over a period of 35 d).
Biodegradation in seawater
The biodegradability of Coco AAPB in seawater was investigated in a study conducted equivalent or similar to OECD 306 (Biodegradability in seawater - Closed Bottle Test) over a 28 d period and using aged seawater as inoculum. Biodegradation was determined based on oxygen consumption. Oxygen consumption due to nitrification was determined to be 0 mg O2/L. Inoculum blank, procedural/functional control and toxicity control were performed. The substance was biodegraded by 76 % after 28 d; thus the test substance can be classified as readily biodegradable in the marine environment. The reference substance sodium benzoate was biodegraded by 72 % within 7 d. In the toxicity control no inhibitory effects were observed (94% biodegradation after 14 d). The other validity criteria were fulfilled (blank respiration < 30 % of the oxygen in the test bottle; temperature in the range: 20.0 +/- 1.4°C; BOD of the mixture of test and reference substance was equal to the sum of the BOD of the separate solutions of the two substances; microbial colony count: 4 x 10E3 cfu/mL).
In conclusion the ultimate biodegradation of the AAPBs was proven; a mean elimination of 99 % was calculated for the AAPBs. Based on the results of the biodegradation study in seawater, the AAPBs are considered as readily biodegradable in the marine environment.
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