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EC number: 271-678-5 | CAS number: 68603-87-2
- 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 soil
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in soil: simulation testing
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Justification for type of information:
- Read-Across from adipic acid, which is a structural analogue and serves well as a representative substance for the carboxylic acid mixture.
- Reason / purpose for cross-reference:
- read-across: supporting information
- Qualifier:
- according to guideline
- Guideline:
- other: US Food and Drug Administration (FDA) Environmental Assessment Technical Assistance Handbook
- GLP compliance:
- not specified
- Test type:
- laboratory
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material:
PHYSICO-CHEMICAL PROPERTIES
- Melting point: 151°C (Rhodia Study, 2008)
- Boiling point: 337.5°C at 1013 hPa (Merck Index)
- Vapour pressure: 0.097 hPa at 18.5°C (Kirk-Othmer)
- Henry's law constant (for volatie substances): 9,656e-9 hPa m³/mol 25°C (Currenta, 2009)
- Water solubility: 23 g/L at 25°C (MITI, 1992)
- Solubility in organic solvents: Adipic acid is not stable in alcohol. The corresponding ester is formed (Beyer, 2004).
- log Pow: 0.093 at pH 3.3 (BASF-Study, 1988)
- pKa: 4.34-5.44 at 18°C; 4.43-5.42 at 20°C; 4.43 at 25°C (Beilstein, 2003)
- Base or acid catalysis of test material:
- UV absorption: t1/2 = 2,9d (Currenta, 2009)
OTHER PROPERTIES
- Adsorption characteristics: adsorption coefficient (Koc) 21.5 (Currenta, 2009)
- Toxicity to microorganisms: Activated sludge, 3-hour EC50 4747 mg/l (Bayer AG, 1988) - Radiolabelling:
- no
- Oxygen conditions:
- aerobic
- Soil classification:
- other: Nixon sandy loam
- Soil no.:
- #1
- Soil type:
- sandy loam
- % Clay:
- 29
- % Silt:
- 21
- % Sand:
- 50
- % Org. C:
- 5
- pH:
- >= 5.5 - <= 6
- Details on soil characteristics:
- water-holding capacity: 0.65 g/g of dry soil
- Soil No.:
- #1
- Initial conc.:
- 1 000 mg/kg soil d.w.
- Based on:
- test mat.
- Soil No.:
- #1
- Temp.:
- 27 °C
- Humidity:
- 60 other: % of water holding capacity
- Soil No.:
- #1
- % Degr.:
- 84
- Parameter:
- CO2 evolution
- Sampling time:
- 30 d
- Transformation products:
- not specified
- Conclusions:
- An 84 % conversion of adipic acid carbon content to carbon dioxide was found after 30 days aerobic incubation in soil.
- Executive summary:
An 84 % conversion of adipic acid carbon content to carbon dioxide was found after 30 days aerobic incubation in soil.
60 % degradation was reached in 1 to 6 d. Therefore, adipic acid is readily biodegradable in soil.
Reference
1) Cumulative net CO2-evolution during incubation in soil
(1000 mg/kg soil; average of three replicates) as percent
conversion of calculated carbon content:
day 9: 63%
day 20: 76%
day 30: 84%
2) Cumulative net CO2 evolution (average of triplicateflasks) as percent conversion of calculated carbon content
at day 22:
250 mg/kg dw soil: 78.8%
500 mg/kg dw soil: 79.1%
1000 mg/kg dw soil: 91.5%
2000 mg/kg dw soil: 94.1%
60 % degradation was reached in 1 to 6 d.
Adipic acid is readily biodegradable in soil.
Description of key information
Carboxylic acids, di-, C4-6 is considered to be readily biodegradable in soil.
Key value for chemical safety assessment
Additional information
For the mixture no data on biodegradation in soil are available. Adipic acid is applied for read-across approach.
Biodegradability of adipic acid in soil was assed in a test conducted according to a national standard method of the U. S. Food and Drug Administration (FDA). An 84 % conversion of adipic acid carbon content to carbon dioxide was found after 30 days aerobic incubation in a sandy loam (Sharabi,1993). 60 % degradation was reached in 1 to 6 d.
As it is shown that all constituents of the mixture are readily biodegradable, it is concluded that succinic acid and glutaric acid are also biodegradable in soil.
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