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Diss Factsheets
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EC number: - | CAS number: -
- 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:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Justification for type of information:
- Please refer to read-across justification attached in IUCLID Section 13.
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- 55.4
- Sampling time:
- 28 d
- Remarks on result:
- other: Reference: RCC, 1986
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 26
- Sampling time:
- 28 d
- Remarks on result:
- other: Reference: Toxicoop, 2019
Reference
Description of key information
The biodegradability potential of the source test item was determined in an OECD 301E and OECD 301D studies, where the source item reached 55.4 % and 26 % biodegradation in 28 days, respectively. Thus, the source item is considered to be primarily inherently biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable, fulfilling specific criteria
- Type of water:
- freshwater
Additional information
No data on the substance itself is available. Therefore, read-across was applied to the source substance Phosphoric acid, 2-ethylhexyl ester, sodium salt (CAS 68186-64-1). This approach is considered appropriate since both substances are multi-constituent substances consisting of a mono-, bis- and tris- substituted phosphate with C-chains (4 - 6 C), only the cation is different. In the target substance the cation is ammonium, while the source substance has sodium.
OECD 301D
The ready biodegradability of the test item was determined with a non-adapted domestic activated sludge over a test period of 28 days in the Closed bottle test according to OECD 301D, Regulation (EC) No. 440/2008 Method C.4 -E and EPA OPPTS 835.3110 under GLP. The test item was tested at a concentration of 3 mg/L, corresponding to a chemical oxygen demand (COD) of 1.78 mg O2/L. The oxygen concentration was measured with an O2 electrode [working based on LDO (Luminescent Dissolved Oxygen) method]. The total oxidised nitrogen (nitrite and nitrate) was measured in all vessels using Nitrite and Nitrate Cell Tests (MERCK®). The change of the measured dissolved oxygen concentrations in the test item bottles did not correspond to the consumed oxygen of ammonium oxidation processes. Because of the relationship between oxygen uptake resulting from a possible ammonium oxidation and oxygen uptake of applied microbial population was equivocal, any correction of the measured dissolved oxygen concentrations was considered as not possible. The biodegradation of the reference item was not inhibited by the test item in the toxicity control. The biodegradation of the test item came to 26.0 % after 28 days. In conclusion, the test item is not readily biodegradable as the pass level of 60 % degradation was not reached in a 10-d-window within the 28 days period of the study but a pass level of 20 % was reached and the test item is considered to be primarily inherently biodegradable.
OECD 301E
The biodegradation of the test item was determined in a test according to OECD 301E. The test substance is suspended in mineral medium, inoculated with a mixed population of aquatic microorganisms and incubated for 28 days in the dark at 20 - 25 °C. During this period, the biodegradation of the test substance is determined on the basis of the reduction of DOC. Within the test period of 28 days, a degradation of 55.4 % was determined. The degradation of the toxicity control was 95 % after 14 days.
Based on the results from the two studies, it was concluded that the source item is primarily inherently biodegradable. Due to the structural similarities between the source and the target substance, the target substance is also considered to be primarily inherently biodegradable.
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.
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