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Diss Factsheets
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EC number: 947-802-5 | 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
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: screening test, other
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1987
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: OCDE. Méthode proposée pour la determination de la biodegradabilité des agents de surface utilises dans les detergents synthetiques. Direction de I'Environnement. Paris, 1976.
- Version / remarks:
- Other guideline mentioned: OCDE, Pollution by Detergents. Determination of the biodegradability of anionic synthetic surface active agents». Paris, 1971.
- GLP compliance:
- not specified
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, industrial, non-adapted
- Remarks:
- secondary effluent from a wastewater treatment plant
- Details on inoculum:
- secondary effluent from a sewage treatment plant
- Duration of test (contact time):
- ca. 21 d
- Initial conc.:
- ca. 5 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- test mat. analysis
- Details on study design:
- a) Selection test.
A certain amount of cationic surfactant is dissolved in a mineral solution to give a final concentration of 5 mg / l of active substance. This solution is inoculated with a small volume of a secondary effluent from a sewage treatment plant and is incubated at 25 ± 1 ° Calabrigodelaluz. The determination of the surfactant concentration is carried out on days 5 and 8 of incubation, and then every two days until the corresponding difference between two sampling takes separated by a period of 4 days is less than 0.15. mg / l. The degradation percentage curve is plotted as a function of time and the result of the test is given by the percentage of the first sample taken corresponding to the point of inflection of the curve. The effectiveness of the biological process is controlled by means of two hard and soft surfactant standards. The result is valid if the percentage of degradation of the soft pattern is between 90 and 95% over a period of 14 days maximum, the hard pattern should not degrade more than 35%. The duration of the test can not pass in any case of the 19 days. For products that do not have a defined inflection point in the degradation curve, the result is obtained at the end of the test, that is, on the 19th day of the test.
b) Confirmation Test.
A synthetic residual water based on mineral salts, peptone, meat extract and urea is used, with a concentration of cationic surfactant of 5 mg / l. This water feeds continuously, by means of a metering pump with a flow of 1 liter / hour, an aeration chamber of 3 liters capacity, which gives a retention time of three hours. The inoculation is also done with a small amount of secondary effluent of good quality from a sewage treatment plant, performing the test at a temperature that must not fall below 18 ° C or exceed 25 ° C. It is necessary to regulate the rate of aeration flow in such a way that the sludge content of the chamber is constantly in suspension and the dissolved oxygen is at least 2 mg / l. After an adaptation period, the normal operating period is 21 days, during which the percentage of degradation is calculated daily from the concentration of surfactant in the synthetic wastewater feed and the corresponding effluent collected. after 24 hours. The percentage of degradation of the product under test is calculated as the average of the values obtained during the 21 days of normal operation. In no case will the duration of adaptation time exceed 6 weeks. The D.Q.O. is determined periodically to check the proper functioning of this laboratory de-oiling plant. of the synthetic wastewater of feeding and of the effluent. Equally It is done with the content of active sludge in the aeration chamber so that they do not exceed 2.5 g / l. - Reference substance:
- not required
- Preliminary study:
- 19 days
- Test performance:
- 21 days
- Key result
- Parameter:
- % degradation (test mat. analysis)
- Remarks:
- preliminary test
- Value:
- ca. 96
- Sampling time:
- 19 d
- Key result
- Parameter:
- % degradation (test mat. analysis)
- Remarks:
- Final test
- Value:
- ca. 95
- Sampling time:
- 21 d
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Benzyldodecyldimethylammonium bromide is biodegraded by sewage sludge >95% after 19 to 21 days.
- Executive summary:
In a study following OECD (1976) test method, the substance constituent benzyldodecyldimethylammonium bromide is biodegraded by sewage sludge >95% after 19 and 21 days.
- Endpoint:
- biodegradation in water: screening test, other
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- No datail is available on the substance, but relevant read across is identified. Please refer to Attached Justification enclosed document.
- Reason / purpose for cross-reference:
- read-across source
- Preliminary study:
- 19 days
- Test performance:
- 21 days
- Key result
- Parameter:
- % degradation (test mat. analysis)
- Remarks:
- by analogy with benzyltetradecyldimethylammonium chloride
- Value:
- ca. 92
- Sampling time:
- 21 d
- Interpretation of results:
- readily biodegradable
- Conclusions:
- By analogy with benzyltetradecyldimethylammonium bromide in a study following OECD (1976) test method, the substance constituent is biodegraded by sewage sludge >92% after 19 and 21 days.
- Executive summary:
By analogy with benzyltetradecyldimethylammonium bromide in a study following OECD (1976) test method, the substance constituent benzyltetradecyldimethylammonium chloride is biodegraded by sewage sludge >92% after 19 and 21 days.
Referenceopen allclose all
Description of key information
Substance biodegradability is based on its constituents properties.
In a study following OECD (1976) test method, the substance constituent benzyldodecyldimethylammonium bromide is biodegraded by sewage sludge >95% after 19 and 21 days.
By analogy with benzyltetradecyldimethylammonium bromide in the same study, the substance constituent benzyltetradecyldimethylammonium chloride s biodegraded by sewage sludge >92% after 19 and 21 days.
Therefore substance is readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
[Type of water: freshwater]
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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