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EC number: 277-232-6 | CAS number: 73019-09-7
- 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: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1995-01-16 to 1995-02-13
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 995
- Report date:
- 1995
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- GLP compliance:
- no
Test material
- Reference substance name:
- 2-[[(4-methoxyphenyl)methylhydrazono]methyl]-1,3,3-trimethyl-3H-indolium methyl sulphate
- EC Number:
- 258-946-7
- EC Name:
- 2-[[(4-methoxyphenyl)methylhydrazono]methyl]-1,3,3-trimethyl-3H-indolium methyl sulphate
- Cas Number:
- 54060-92-3
- Molecular formula:
- C20H24N3O.CH3O4S C21H27N3O5S
- IUPAC Name:
- 2-{[2-(4-methoxyphenyl)-2-methylhydrazin-1-ylidene]methyl}-1,3,3-trimethyl-3H-indol-1-ium methyl sulfate
- Test material form:
- solid
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: see below
- Details on inoculum:
- - Test organisms: aquatic mix-population of activated sludge
- Source of inoculum:
Activated sludge I: municipal ("Kläranlage im Labormaßstab, die mit kommunalen Abwasser betrieben wird (Wupperverband)")
Activated sludge II: predominantly municipal ("Kläranlage Odenthal, wird vorwiegend mit kommunalem Abwasser betrieben.")
Activated sludge III: predominantly industrial ("Belebungsbecken des Gemeinschaftsklärwerks Bürrig wird vorwiegend mit industriellem Abwasser betrieben.")
- Pretreatment: each sludge was washed twice, and separated via centrifugation - Duration of test (contact time):
- ca. 28 d
Initial test substance concentration
- Initial conc.:
- ca. 100 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 1
- Sampling time:
- 28 d
- Remarks on result:
- other: Activated sludge I - municipal
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 2
- Sampling time:
- 28 d
- Remarks on result:
- other: Activated sludge II - predominantly municipal
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 6
- Sampling time:
- 28 d
- Remarks on result:
- other: Activated sludge III - predominantly industrial
BOD5 / COD results
- Results with reference substance:
- 100% biodegradation after 14 days with each sludge type.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not inherently biodegradable
- Conclusions:
- The test substance was tested for inherent biodegradation in a modified Zahn-Wellens test according to OECD 302B. The DOC-removal with three different sludge types was consistently below 10% after 28 days clearly showing that the test substance has to be considered as "not inherently biodegradable".
- Executive summary:
The test substance was tested for inherent biodegradation in a modified Zahn-Wellens test according to OECD 302B. A significant biological degradation was not noted. The DOC-removal with three different sludge types was consistently below 10% after 28 days.
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