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EC number: 246-885-9 | CAS number: 25354-97-6
- 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)
Description of key information
The ready biodegradability of 2 -Hexyldecanoic acid was determined with a non-adapted activated sludge over a test period of 28 days in the Modified Sturm Test in compliance with GLP. The mean of replicates reached the 10% level (beginning of biodegradation) within 6 days. The mean of the replicates reached the 60% threshold within 14 days. The mean biodegradation on day 28 was 85%. The test item was judged to be readily biodegradable, fulfilling the 10 -day window.
This result is supported by further tests with similar substances and in a computer model calculation.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
Additional information
The ready biodegradability of 2 -Hexyldecanoic acid was determined with a non-adapted activated sludge over a test period of 28 days in the Modified Sturm Test (OECD guideline no. 301B) in compliance with GLP. The mean of replicates reached the 10% level (beginning of biodegradation) within 6 days. The mean of the replicates reached the 60% threshold within 14 days. The mean biodegradation on day 28 was 85%. The test item was therefore considered to be readily biodegradable, fulfilling the 10 -day window.
The biodegradation in water of 2 -hexyldecanoic acid was calculated using BIOWIN v4.10, a subroutine of of the computer program EPI SuiteTM version 4.11. The computer model calculation predicts 2 -hexyldecanoic acid to be ready biodegradable.
In further supporting studies similar test substances were tested for biodegradation as follows:
2 -butyloctanoic acid was tested according to OECD guideline no. 301B in compliance with GLP. In this study the biodegradation of 2 -Butyl octanoic acid was 69 % after 28 days. Also the percentage biodegradation exceeded 60% within the 10 -day window. The test item was therefore be considered to be readily biodegradable.
Reaction mass of n-undecanoic-acid and 2-methyl-decanoic-acid and 2-ethyl-nonanoic-acid and 2-propyl-octanoic-acid and 2-butyl-heptanoic-acid was tested for ready biodegradation according to OECD 301B. The degradation of the test item was 77.2 % within 28 days after acidification. The biodegradation of the test item reached the criterion for ready biodegradation.
2 -decyltetradecanoic acid was determined with a non-adapted activated sludge over a test period of 35 days in the Modified Sturm Test according to OECD 301 B. In this study four of six replicates reached a mean of 63 % biodegradation after 28 days. Therefore under the test conditions 2-decyltetradecanoic acid was classified as readily biodegradable, but failing the 10-day-window. In an additional supporting study with 2-decyltetradecanoic acid according to OECD 301 F the substance did not meet the 10-day window for ready biodegradable status. It consistently and uniquely fails and exceeds the criterion of less than 20 % ThOD difference between replicates in three tests. However, based on the extent of the biodegradabalility at the end of the 28-day with some replicates % ThOD greater than 60 %, 2-Decyltetradecanoic acid was considered inherently biodegradable.
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