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EC number: 807-033-7 | CAS number: 55258-21-4
- 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
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: OECD and GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- 807-033-7
- EC Number:
- 807-033-7
- IUPAC Name:
- 807-033-7
- Test material form:
- solid: flakes
- Details on test material:
- Identification: Distearyl N-lauroyl- L- glutamate
Appearance/Physical State: white solid
Batch: Test01
Purity: > 98%
Expiry Date: 29 September 2016
Storage Conditions: room temperature in the dark
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- A mixed population of activated sewage sludge micro-organisms was obtained on 8 december 2014 from aeration stage of the Severn Trent Water Plc sewage treatment plant at Loughborough, leicestershire, UK, which treats predominantly domestic sewage.
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 10 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- The following test preparations were prepared and inoculated in 5 liter test culture vessels each containing 3 liters of solution:
a) An inoculated control, in duplicate, consisting of inoculated mineral medium.
b) The procedure control containing the reference item (sodium benzoate), in duplicate, in inoculated mineral medium to give final concenreation of 10 mg cabon/L.
c) The test item, in duplicate, in inoculated mineral medium to give a final concentration of 10 mg caron/L.
d) The test item plus the reference item in inoculated mineral medium to give a final concentration of 20 mg carbon/L to act as a toxicity control (one vessal only)
Reference substance
- Reference substance:
- other: sodium benzoate
Results and discussion
- Test performance:
- The test was carried out in a temperature controlled room at temperatures of between approximately 18 to 24 ℃, in darkness.
The pH of the test preparations was determined on Day o and day 28 prior to acidification with hydrochloric acid.
Samples (2ml) were taken from the first CO2 absorber vessels on days 0,2,6,8,10,14,21,28 and 29. The second absoeber vessels were samples on Days 0 and 29. All samples were analyzed for IC immediately.
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 32
- Sampling time:
- 28 d
- Details on results:
- The test item attained 32% biodegradation after 28 days and therefore cannot be considered to be readily biodegradable under the strict terms and conditions of OECD Guidance No.301B.
BOD5 / COD results
- Results with reference substance:
- Sodium benzoate attained 75% biodegradation after 14 days and 89% biodegradation after 28 days thereby confirming the suitability of the inoculum and test conditons.
Any other information on results incl. tables
Validation Criteria:
The total CO2 evolution in the inoclum control vessels on day 28 was 34.82 mg/L and therefore satisfied the validation crirerion given in the OECD test guidelines.
The IC content of the test item suspension in the mineral medium at the start of hte test was below 5% of the TC content and hence satisfied the validation criterion given in the OECD test guidelines.
The difference between the values for CO2 production at the end of the test for the replicate vessels was <20% and hence satisfied the validation criterion given in the OECD test guidelines.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- The test item attained 32% biodegradation after 28 days and therefore cannot be considered to be readily biodegradable under the strict terms and conditions of OECD Guidance No.301B.
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