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Reaction mass of 2-{[3-(trimethoxysilyl)propyl]amino}ethanaminium chloride and 2-{benzyl[3-(trimethoxysilyl)propyl]amino}ethanaminium chloride and N-[2-(benzylamino)ethyl]-3-(trimethoxysilyl)propan-1-aminium chloride and N-[2-(dibenzylamino)ethyl]-3-(trimethoxysilyl)propan-1-aminium chloride and N-benzyl-2-{benzyl[3-(trimethoxysilyl)propyl]amino}ethanaminium chloride and N-benzyl-N-[2-(dibenzylamino)ethyl]-3-(trimethoxysilyl)propan-1-aminium chloride.
EC number: 700-961-2 | 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
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to soil macroorganisms except arthropods: short-term
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 01 - 16 March 2004
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 207 (Earthworm, Acute Toxicity Tests)
- Version / remarks:
- 1984
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Federal Office of Public Health, Swiss Agency for Therapeutic Products and Swiss Agency for the Environment, Forests and Landscape (2003)
- Analytical monitoring:
- no
- Vehicle:
- no
- Remarks:
- chloroform was used to prepare the test item dilutions but was evaporated prior to test start
- Details on preparation and application of test substrate:
- - Preparation of test item solution: the test item was dissolved and diluted in chloroform and applied to a portion of sand. For the highest test item concentration, 13.900 g of the test item were dissolved completely in 50 mL chloroform, resulting in a test item concentration of 278 mg/mL chloroform. The highest test concentration was diluted with chloroform to obtain the lower test concentrations. Aliquots of 1.5, 2.67, 4.74, and 8.43 mL of the application solution of the highest test concentration were
made up to 15 mL with chloroform to obtain the application solutions of the nominal test concentrations of 100, 178, 316, and 562 mg/kg dry soil, respectively.
- Preparation of artificial soil: the artificial soil (air dry components, without calcium carbonate) was prepared in a batch of 20 kg by intensely mixing 2 kg sphagnum peat, 4 kg kaolinite clay, and 14 kg sand (dry weights) in a cement mixer. For each test vessel, 554 g of the prepared substrate (air dry, corresponding to 546 dry weight (dw)) was thoroughly mixed with 10 g sand/test item mixture, 3.0 g calcium carbonate, and 186 mL purified water in a laboratory mixer.
- Method of mixing into soil: 10 mL of the corresponding application solution was applied to 50 g sand in a mortar. The solvent was completely evaporated at room temperature under a hood for 30 min. The sand/test item mixture was mixed with a pestle and then mixed on a roller mixer for 30 min. The mixture was then divided into aliquots of 10 g (corrected for the amount of test item applied to 10 g of sand) and filled into vials. Immediately before the start of the test, aliquots of 10 g sand/test item mixture were incorporated into the four replicates of 546 g artificial soil (dw) per test concentration by intense mixing in a laboratory mixer. The moisture content was brought to 35% by adding 186 mL of purified water.
- Controls: the control substrate was prepared analogous to the test substrates. A 50 g sand portion was treated with 10 mL chloroform (but without test item) identical to the application of the test item in the treatment groups. - Test organisms (species):
- Eisenia fetida
- Animal group:
- annelids
- Details on test organisms:
- TEST ORGANISM
- Common name: earthworm
- Source: laboratory stock held in temperature-controlled room
- Feeding: during breeding the test species were fed with suitable food (e.g. horse manure and potatoes).
- Age at test initiation: adults with a clitellum, approximately four to five months old
- Weight at test initiation: 338 - 382 mg
ACCLIMATION
- Acclimation period: 1 day prior to test start
- Acclimation conditions (same as test or not): acclimatized to the artificial soil and test temperature - Study type:
- laboratory study
- Substrate type:
- artificial soil
- Limit test:
- no
- Total exposure duration:
- 14 d
- Test temperature:
- 18.9 - 20.4 °C
- pH:
- 6.2 (untreated soil, test start)
5.5 - 6.3 (test end) - Moisture:
- 35% (at test start)
33 - 34% (at test end) - Details on test conditions:
- TEST SYSTEM
- Test container (material, size): 1 L cylindrical glass vessels (diameter 10 cm, height 14 cm), vessels were covered by glass lids to limit evaporation, air exchange was sufficient
- Amount of soil or substrate: 556 g artificial soil dw (corresponding to about 750 g wet weight)
- No. of organisms per container (treatment): 10
- No. of replicates per treatment group: 4
- No. of replicates per control: 1
SOURCE AND PROPERTIES OF SUBSTRATE (if soil)
- Composition (if artificial substrate):
% sand: 70%
% Sphagnum peat: 10% (shredded, sieved through 2 mm sieve)
% kaolinite clay: 20%
% calcium carbonate: 0.5%
OTHER TEST CONDITIONS
- Photoperiod: continuous illumination
- Light intensity: 490 - 550 Lux
EFFECT PARAMETERS MEASURED: surviving worms were counted and inspected for abnormal behavior or other symptoms of toxicity after 7 and 14 d. Weight of worms was checked prior to exposure (individually) and at the end of the test (worms washed with water and gently dried on filter paper).
OTHER PARAMETERS MEASURED:
- pH: pH was measured in the untreated artificial soil. At the end the pH was checked in all test vessels. Replicates of each concentration were mixed. An aliquot of about 10 g was shaken with 25 mL KCI solution (1 M) for 30 min and the pH was measured in this suspension.
- temperature: continuously monitored
TEST CONCENTRATIONS
- Range finding study: yes
- Test concentrations: not reported
- Results used to determine the conditions for the definitive study: yes, but not reported - Nominal and measured concentrations:
- Nominal concentrations: control, 100, 178, 316, 562 and 1000 mg/kg dw
- Reference substance (positive control):
- yes
- Remarks:
- 2-chloroacetamide
- Duration:
- 14 d
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 1 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Duration:
- 14 d
- Dose descriptor:
- LC50
- Effect conc.:
- > 1 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Details on results:
- - Mortality at end of exposure period: no
- Mortality of control: no mortalities
- Mean body wet weight per worm: 362 mg at test start and 342 mg at test end
- Changes in body weight of live adults (% of initial weight) at end of exposure period: 6% reduction of the weight in the control and 5-9% reduction in the treatments (for more details see field "any other information on results incl. tables")
- Morphological abnormalities: no
- Behavioural abnormalities: no
- Other biological observations: no - Results with reference substance (positive control):
- - Results with reference substance valid: not stated in the report
- Reported statistics and error estimates:
- The changes in mean body weight of the surviving worms were compared to the control, and were statistically evaluated by means of a multiple Dunnett-test. Compared to the control, the losses in mean body wet weight of the worms were not statistically significantly different up to and including the highest nominal test concentration of 1000 mg/kg dry soil (results of a Dunnett-test, one-sided, a = 0.05).
- Validity criteria fulfilled:
- yes
- Conclusions:
- The tested substance was not toxic to the earthworm Eisenia fetida up to and including the highest tested concentration of 1000 mg/kg dw within 14 d. Therefore the LC50 was > 1000 mg/kg dw and the NOEC >= 1000 mg/kg dw (both nominal).
Reference
The mean body wet weight per worm in the control vessels was 362 mg at the beginning of the test and 342 mg at the end of the study. Thus, the mean body wet weight of the surviving worms in the control had, on average, decreased slightly by 6% due to starvation during the exposure period of 14 days. The average reduction of the mean wet weight of the surviving test organisms in the treated soil was in the same range (5 to 9%). Compared to the control, the losses in mean body wet weight of the worms were not statistically significantly different up to and including the highest nominal test concentration of 1000 mg/kg dry soil.
Description of key information
LC50 (14 d) > 1000 mg/kg dw (nominal, Eisenia fetida, OECD 207)
NOEC (14 d) >= 1000 mg/kg dw (nominal, Eisenia fetida, OECD 207)
Key value for chemical safety assessment
Additional information
One study is available in which the short term toxicity of the substance to the soil macroorganism Eisenia fetida was tested. The study was conducted according to the OECD guideline 207 and GLP standards. The test organism was exposed for 14 d in artificial soil to nominal test item concentrations of 100, 178, 316, 562 and 1000 mg/kg dry soil and a control. The mortality and behavior was recorded at day 7 and 14. The weight of the organisms was recorded at the beginning and at the end of the test. No mortality, significant effect on the weight or other abnormalities were observed by the end of the testing period up to and including the highest tested concentration. Therefore the study resulted into an LC50 (14 d) > 1000 mg/kg dw and a NOEC (14 d) of >= 1000 mg/kg dw (both nominal).
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