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EC number: 402-580-4 | CAS number: 111439-76-0 ALKYLSILANE TZ 01748; DYNASYLAN 9405; EURENOR(R) 5020; PSX 5305
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
The test substance is a liquid under all environmental conditions and is slightly solubility in water (18 mg/L) and is of low volatility (based on vapour pressure of 303.8 Pa at 25 °C). The substance was determined to have a log Koc value of 2.49 by HPLC using soil adsorption reference data, indicating a moderate affinity for soil. As such, any environmental release will result in the majority of the substance compartmentalising into the soil..
A Level III fugacity model was conducted in the US EPA EPISUITE, which assumes steady-state but not equilibrium conditions. The Level III model in EPI Suite predicts partitioning between air, soil, sediment and water using a combination of default parameters and various input parameters. This model has been used to calculate the theoretical distribution of the substance between four environmental compartments (air, water, soil, sediment) at steady state in a unit world. The results obtained from modelling are as follows:
Air: 4.98%
Water: 17.9%
Soil: 75.5%
Sediment: 1.63%
It is proposed that the majority of the substance is modelled to distribute to the soil compartment within the constraints of the QSAR model.
The substance achieved 0% biodegradation in a 28-day CO2 evolution ready biodegradation study therefore it is not readily biodegradable. This indicates that the substance is unlikely to achieve a half-life of less than 40 or 60 days within fresh water attributed to ready biodegradation alone. The substance undergoes hydrolysis at environmentally relevant pH values (half-life of 45.9 hours at pH 7 and of 27.1 hours at pH 9 and at 25°C). Studies on direct phototransformation in water are not available, but it is assumed on the basis of chemical structure and nature of use that the substance is not degraded by direct photolysis. It is concluded, therefore, that hydrolysis will contribute to the depletion of the substance within the environment therefore the substance is not considered to be persistent.
The substance has been determined to have a high partition coefficient value (log Kow = 5.1 at 25°C), which demonstrates a potential to bioaccumulate, however, a BCF value of 1076 L/kg was obtained for the substance using a valid QSAR model therefore the substance is not considered to be bioaccumulative on the basis of the QSAR data developed. The same QSAR model was used to predict the QSAR value for the predicted main hydrolysis product of CAS 111439-76-0. A BCF value of 8.346 L/kg was obtained for the predicted hydrolysis product therefore the hydrolysis product is not considered to be bioaccumulative. As the substance is not anticipated to bioaccumulate, effects due to secondary poisoning are unlikely in the event of exposure to higher level organisms via ingestion of environmental organisms.
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