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Diss Factsheets
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EC number: 221-339-2 | CAS number: 3069-42-9
- 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
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12 May to 28 May 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Remarks:
- Differential Scanning Calorimetry
- Melting / freezing pt.:
- 14 °C
- Remarks on result:
- other: No standard melting point was found. A melting of the main phase at approximately 14 °C (1013 hPa) was determined.
- Conclusions:
- No standard melting point was found. A melting of the main phase at approximately 14 °C (1013 hPa) was determined in a reliable study conducted according to an appropriate test protocol.
Reference
Result
The DSC measurements were performed twice. After cooling to -150/-50 °C at a rate of 2 K/min the sample was heated to +35 °C at a rate of 10 K/min. The cooling curve exhibits a sharp exothermic peak with a peak maximum at 15 °C (most likely crystallization). Additionally two weak exothermic maxima at 0 °C and -25/-26 °C are registered (crystallization or other phase transitions). Upon heating the heat flow curve shows a sharp endothermic peak with a peak maximum temperature at 19 °C and an extrapolated onset temperature of 14 °C (melting of main phase). This maximum is preceded by two smaller endothermic maxima at -23 °C and 2/3 °C
(phase transitions which cannot be clearly assigned to melting).
Melting temperature:
No standard melting point was found. The melting point of the main phase is detected at approx. 14 °C.
Description of key information
Trimethoxyoctadecylsilane: No standard melting point. Melting of the main phase at approximately 14 °C, at 1013 hPa (measured)
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 14 °C
Additional information
No standard melting point was found. A melting of the main phase at approximately 14 °C (1013 hPa) was determined by Differential Scanning Calorimetry method according to EU Method A.1.
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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