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EC number: 295-835-2 | CAS number: 92129-33-4
- 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 terrestrial plants
Administrative data
- Endpoint:
- toxicity to terrestrial plants: long-term
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Results published in a scientific review and peer-reviewed in the European RAR.
Data source
Reference
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 1 987
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 208 (Terrestrial Plants Test: Seedling Emergence and Seedling Growth Test)
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Quaternary ammonium compounds, di-C16-18-alkyldimethyl, chlorides
- EC Number:
- 295-835-2
- EC Name:
- Quaternary ammonium compounds, di-C16-18-alkyldimethyl, chlorides
- Cas Number:
- 92129-33-4
- Molecular formula:
- R2N+(CH3)2, Cl- with R is fatty alkyl with chainlengths C16-C18 (even numbered)
- IUPAC Name:
- N-C16-C18(even numbered)-alkyl-N,N-dimethyl-C16-C18(even numbered)-alkyl-1-aminium chloride
- Details on test material:
- 75% active ingredient
Constituent 1
Sampling and analysis
- Analytical monitoring:
- no
Test substrate
- Vehicle:
- not specified
- Details on preparation and application of test substrate:
- Potting compost with about 80% sand/gravel and 20% silt/clay including 4% organic matter was used as substrate.
Test organisms
open allclose all
- Species:
- Phaseolus aureus
- Plant group:
- Dicotyledonae (dicots)
- Species:
- Helianthus annuus
- Plant group:
- Dicotyledonae (dicots)
- Species:
- Sorghum bicolor
- Plant group:
- Monocotyledonae (monocots)
Study design
- Test type:
- seedling emergence toxicity test
- Study type:
- laboratory study
- Substrate type:
- artificial soil
- Limit test:
- no
- Total exposure duration:
- 21 d
Test conditions
- Reference substance (positive control):
- not specified
Results and discussion
Effect concentrationsopen allclose all
- Species:
- Sorghum bicolor
- Duration:
- 21 d
- Dose descriptor:
- EC50
- Effect conc.:
- 2 530 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- other: fresh weight of seedlings
- Species:
- Helianthus annuus
- Duration:
- 21 d
- Dose descriptor:
- EC50
- Effect conc.:
- 2 930 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- other: fresh weight of seedlings
- Species:
- Phaseolus aureus
- Duration:
- 21 d
- Dose descriptor:
- EC50
- Effect conc.:
- > 10 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- other: fresh weight of seedlings
- Species:
- Sorghum bicolor
- Duration:
- 21 d
- Dose descriptor:
- NOEC
- Effect conc.:
- > 1 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- growth
- Species:
- Helianthus annuus
- Duration:
- 21 d
- Dose descriptor:
- NOEC
- Effect conc.:
- > 1 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- growth
- Species:
- Phaseolus aureus
- Duration:
- 21 d
- Dose descriptor:
- NOEC
- Effect conc.:
- > 10 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- growth
- Species:
- other: Sorghum bicolor, Helianthus annuus and Phaseolus aureus
- Duration:
- 7 d
- Dose descriptor:
- NOEC
- Effect conc.:
- > 10 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- seedling emergence
- Details on results:
- The highest test material concentrations which caused no growth reduction at the 95% significance level were ≥ 1,000 mg/kg for sorghum and sunflower and ≥ 10,000 mg/kg for mung bean.
The 7-day EC50 for seed emergence (the concentration at which seedling emergence was 50% of that recorded in the control by the seventh day after sowing) was greater than the highest concentration tested (10,000 mg/kg) for all tested species.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Executive summary:
The influence of DHTDMAC (76.1% active ingredient = quartenary ammonium) on the emergence of plant seedlings and the early growth stages of Sorghum bicolor, Helianthus annuus and Phaseolus aureus has been invetsigated (Windeatt, 1987).
Potting compost with about 80% sand/gravel and 20% silt/clay including 4% organic matter was used as substrate.
The highest test concentration of 10 g active ingredient of DHTDMAC per kg dry soil had no significant effect on the emergence of seeds after 7 days. After further 21 days the EC50 for fresh weight reduction of the seedlings was 2530 mg/kg for Sorghum bicolor and 2,930 mg/kg for Helianthus annuus (active ingredient in dry soil). 1,000 mg/kg was the highest test concentration with no growth effect. For Phaseolus aureus the 28 d EC50 was > 10 g/kg.
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