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Diss Factsheets
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EC number: 292-771-7 | CAS number: 90990-10-6
- 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
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Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
No tests are required due to ready biodegradability of category members Fatty Acids.
Key value for chemical safety assessment
Additional information
The category members Fatty Acids are readily biodegradable. In accordance with column 2 of EC 1907/2006 Annex IX 9.2.1.3 the soil simulation testing is not required for readily biodegradable substances.
For the sake of completeness available experimental results on degradation in soil are mentioned for the category member stearic acid (CAS No. 57-11-4).
Larson (1992a) reported a study on the biodegradation of stearic acid in sludge amended soils. Sludge amended soil (5.0 g) were incubated with 0.1 ppm and 1.0 ppm of radiolabeled test substance. Degradation was monitored by respired CO2 which was trapped by potassium hydroxide, counted by LSC and quantified by calculating against the initial amounts radiolabeled substance added. The determination of degradation was based on the recovery rate of 14-CO2. The overall degradation values were 59.48% and 40.93% for 0.1 ppm and 1.0 ppm, respectively after 134 days. The calculated rate constants were 0.057 day-1 and 0.013 day-1 for 0.1 ppm and 1.0 ppm, respectively. The corresponding half- lives were reported to be 12.2 days and 53.2 days.
Another study performed by Larson (1992b) according to the above mentioned study design supported theses findings. The tested concentration of 0.1 ppm revealed a cumulative degradation of 55.96% after 134 days. The half life and rate constant were not determined.
A Draft Assessment Report (DAR, 2008) published by the EFSA comprised degradation studies in soil with fatty acids potassium salts according to BBA IV 4-1 which support a fast degradation of fatty acids and their derivatives with DT50values of 1 to 3 days for Fatty Acids (C7-C29) (DAR, 2008).
Reference: Draft Assessment Report (DAR) for Fatty Acids (C7-C29) (Volume 3, Annex B, Part 4, B.8, August 2008)
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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