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EC number: 608-211-5 | CAS number: 284462-37-9
- 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)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 6/2004
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Type: mixed population of aquatic microorganisms (activated sludge)
Origin: aeration tank of a waste water plant treating predominantly domestic sewage (Wupper area water authority)
Date of collection: 2004-05-03
Pretreatment: none
Concentration of inoculum: 30 mg/L ss - Duration of test (contact time):
- 28 d
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- Pretreatment of the test substance:
25 mg test substance were weighed out on aluminium foil. This substance inclusive the aluminium foil was added to the test vessels to give a test concentration of 100 mg/L test substance.
Exposure conditions:
Test volume : 250 ml
Test apparatus : Voith Sapromat
Mixing: 1 magnetic stirrer per test vessel
Incubation temperature : 22 +- 2°C
Chemical analysis of NO3(-n)/ NO2 (-n):
Method: determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric datection
test apparatus: continuous flow analyser SKALAR SAN Plus System - Reference substance:
- benzoic acid, sodium salt
- Remarks:
- purity: 99%, batch no.: 31345-032 (Sigrna-Aldrich)
- Parameter:
- % degradation (O2 consumption)
- Value:
- 1
- Sampling time:
- 28 d
- Details on results:
- - The BOD values of the test item after 28 days were corrected for the oxygen consumed by nitrification.
- The used concentrations of the test item did not show toxic effects to bacteria
- pH of test vessel: 7.7 (mean value) - Results with reference substance:
- Kinetic of reference substance ( % Degr.):
78 after 8 days
85 after 14 days
89 after 20 days
89 after 28 days - Validity criteria fulfilled:
- yes
- Remarks:
- (-Ready biodegradability of reference comp. >60% 14d. -No toxicity in control. -Replicates difference< 20% . - Oxygen uptake of blank inoculum=< 60mg/l. -No pH influence.)
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- Within 28 days, a degradation rate of 1 % was determined. The test item is considered to be "Not Readily Biodegradable". The reference compound sodium benzoate showed 85 % degradation after 14 days.
- Executive summary:
To test for its biodegradability potential, the substance was incubated for 28 days in continuously stirred 250 ml closed flask (in duplicate) in the dark with an inoculum originally collected from a local, predominantly domestic sewage treatment plant. In this assay, biodegradation was estimated by biological oxygen demand (BOD) over time. BOD was measured daily by a manometer. The incubation temperature was 22 ± 2°C, pH was 7.7(test item). The concentration of innoculum was 30 mg /L suspended solids and the one of the substance was 100 mg/L. An endogenous control and a toxicity control run in parallel. The BOD values of the test item after 28 days were corrected for the oxygen consumed by nitrification. The used concentrations of the test item did not show toxic effects to bacteria.
The 28-day degradation was 1% according to the OECD method 301F. In conclusion the substance is not readily biodegradable.
Reference
After 28 days the pH values of the flasks containing test item was 7.7
Description of key information
Within 28 days, a degradation rate of 1 % was determined. The test item is considered to be "Not Readily Biodegradable". The reference compound sodium benzoate showed 85 % degradation after 14 days.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
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.
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