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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
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EC number: 205-550-7 | CAS number: 142-62-1
- 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 water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: sediment simulation testing
- Data waiving:
- other justification
- Justification for data waiving:
- the study does not need to be conducted because the substance is readily biodegradable
- Transformation products:
- not measured
- Endpoint:
- biodegradation in water: simulation testing on ultimate degradation in surface water
- Data waiving:
- other justification
- Justification for data waiving:
- the study does not need to be conducted because the substance is readily biodegradable
- Transformation products:
- not measured
Referenceopen allclose all
Description of key information
In accordance with column 2 of Regulation (EC) 1907/2006, Annex IX 9.2 further testing on biodegradation in water and sediment simulation tests is not required because the substance is readily biodegradable.
Key value for chemical safety assessment
Additional information
The category members Fatty Acids are predominantly readily biodegradable. In accordance with column 2 of EC 1907/2006 Annex IX 9.2 further testing on biodegradation in water and sediment simulation tests is not required because the substance is readily biodegradable.
For the sake of completeness available experimental results on simulation tests to assess the biodegradability of chemicals discharged in wastewater are summarized for the category member stearic acid (CAS No. 57-11-4).
Numerous experimental results for determining the extent and kinetics of primary and ultimate biodegradation by activated sludge are available for stearic acid since the substance is used as positive reference substance in a test design similar to OECD Guideline 314 B. Biodegradation of radiolabeled stearic acid in the mixed liquor (water-soluble fraction and sorbed fraction; approximately 2500 mg/L suspended solids) during activated sewage treatment was determined. A known amount of stearic acid (1.0 or 0.1 mg/L) was added to the biotic sludge systems (abiotic systems were not tested in deviation to the guideline) and monitored for 28 days up to 140 days. The conversion of radiolabeled test substance to radiolabeled CO2 was measured by trapping evolved CO2 in base traps and by quantifying dissolved CO2 by LSC. The resulting data was used to develop the elimination rate of stearic acid and the extent of overall mineralization.
The overwhelming part of the reported data from these biodegradability tests of stearic acid prove this substances to be very well accessible to ultimate biodegradation under aerobic conditions resulting in cumulative degradation rates of 90%. The reported kinetic for stearic acid was highly variable (0.18 - 0.86 days-1) depending on the test substance concentration and test duration. The highest rates were achieved for test concentrations of 0.1 mg/L stearic acid. The plateau phase for degradation was reached for stearic acid as positive reference substance during the first weeks.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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