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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: - | CAS number: -
- 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
- Study period:
- November 12, 2007 - December 11, 2007
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: study conform with Directive 92/69 EEC, C.4-A
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-A (Determination of the "Ready" Biodegradability - Dissolved Organic Carbon (DOC) Die-Away Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Details on test material:
- Identity: AES
Batch no.: LSF7
Expiration date: February 15, 2008
Purity: 80.3%
Stability in water: Max. 30 days at room temperature
Solubility in water: Very soluble
Aggregate state / physical
form at room temperature: Solid
Storage conditions: In the refrigerator at about 4 °C.
Specific instructions: Slightly hygroscopic
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge: ARA Ergolz II, Füllinsdorf / Switzerland
and ARA Ergolz I, Sissach / Switzerland - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 29.4 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
- Details on study design:
- Test vessels: 2000-mL Erlenmeyer flasks, cleaned with alcoholic hydrochloric acid, rinsed with
deionized water and dried. The final volume was 1000 mL per flask. Each flask was loosely
covered with aluminum foil to allow the exchange of air between the flask and the surrounding atmosphere.
The test media were continuously stirred by magnetic stirrers.
Identification: The test vessels were labeled with all necessary information to ensure unmistakable identification.
Test duration: 28 days
Test temperature: 21 - 24 °C. The inoculated flasks were incubated in a temperature-controlled room.
The temperature was checked on each sampling date (see Section 3.5) in one of the inoculum
controls. Additionally, the room temperature was continuously recorded.
pH: Prior to test start, the pH was measured in each test flask before the addition of the activated sludge
inoculum and, if necessary, adjusted to pH 7.4 with a diluted hydrochloric acid solution. At the end of
incubation, the pH was measured again in each test flask (Table 3).
Light conditions: The test flasks were incubated in a dark room.
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 16
- Sampling time:
- 28 d
- Details on results:
- In the toxicity control, containing the test item (corresponding to 57% of total DOC), the reference item (corresponding to 43% of total DOC) and activated sludge (inoculum), the initial DOC concentration of 68 mg/L measured on Day 0 decreased to 35 mg/L by Day 14. Biodegradation amounted to49% within 14 days of exposure. Thus, according to the test guidelines, the test item was not inhibitory to activated sludge at the tested concentration of 121 mg/L because degradation was >35% within 14 days.
BOD5 / COD results
- Results with reference substance:
- In the procedure controls, containing the reference item sodium benzoate and activated sludge (inoculum), sodium benzoate was completely biodegraded (>90%) within the first three days of exposure, thus confirming suitability of the activated sludge.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- AES was not biodegradable under the test conditions.
- Executive summary:
In the test flasks, containing the test item and activated sludge (inoculum), the mean concentration of DOC (dissolved organic carbon) only slightly decreased from initially 35 mg/L on Day 0 to 29 mg/L on Day 28 . The mean biodegradation of AES based on DOC decrease amounted to 16%.
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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