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EC number: 406-420-4 | CAS number: 69430-40-6 DC 5067
- 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
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16 - 18 April, 1991
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP Study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 991
- Report date:
- 1991
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes
- Type of method:
- static method
Test material
- Reference substance name:
- α-trimethylsilanyl-ω-trimethylsiloxypoly[oxy(methyl-3-(2-(2-methoxypropoxy)propoxy)propylsilanediyl]-co-oxy(dimethylsilane))
- EC Number:
- 406-420-4
- EC Name:
- α-trimethylsilanyl-ω-trimethylsiloxypoly[oxy(methyl-3-(2-(2-methoxypropoxy)propoxy)propylsilanediyl]-co-oxy(dimethylsilane))
- Cas Number:
- 69430-40-6
- Molecular formula:
- Unspecified example: C18.3H46.8O5.8Si4.1
- IUPAC Name:
- 2,2,4,4,6,12,15-heptamethyl-6-[(trimethylsilyl)oxy]-3,5,10,13,16-pentaoxa-2,4,6-trisilaheptadecane
- Details on test material:
- Identification: DC 5067
Description: Clear, light brown liquid
Lot Number: AB 090122
Purity: >99%
Storage conditions: In the original container at room temperature in the dark
Stability under storage conditions: Stab1e
Expiry date: December 1, 1991
Constituent 1
Results and discussion
Vapour pressure
- Temp.:
- 25 °C
- Vapour pressure:
- ca. 32 Pa
- Remarks on result:
- other: 29 - 35 Pa
Any other information on results incl. tables
The vapour pressure at 25°C was determined using the Static Technique. During the measurements 1-7 at 26.78°C, a relatively large decrease in vapour pressure could be observed. Therefore the sample was evacuated for 10 s after each measurement. This decrease in vapour pressure is probably caused by the presence of a volatile impurity. Because the sample was re-exposed to a fresh vacuum at the start of each measurement, the most volatile impurity was removed gradually. This impurity was removed after approximately 7 measurements, indicating that the amount of this impurity was relatively low. Therefore the 10 s evacuation step between the measurements was stopped. Although the vapour pressure was nearly stable at the end of the measurements, the test substance behaviour was not ideal. The consequence of this is that it is more difficult to determine "the vapour pressure" of the test substance because the composition of the vapour in the sample cell continuously changed. In order to obtain the vapour pressure at each temperature, the results of the vapour pressure readings were extrapolated (when necessary) to a theoretical initial measurement in each series. The results are shown in Table 1 below.
Measurements | Temperature of measurement | ln(p) (PA) | Vapour pressure1)(Pa) |
8 - 42 | 26.78 | 3.57 | 35.5 |
43 - 93 | 32.71 | 3.93 | 51 |
96 - 1032) | 39.90 | 4 .27 +- 0.03 | 71.4 +- 2.1 |
1): After extrapolation to the measurements of series 3
2): The vapour pressure was nearly stable
In order to obtain the vapour pressure, the results at each temperature were calculated relative to the vapour pressure measured at 38.90°C (see Table l), taking into account the vapour pressure rise caused by the rise in temperature.
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the main components in the test substance at 25°C was determined to be
P(25°C) = 32 +- 3Pa
= 0.24 +- 0.02 mm Hg - Executive summary:
The determination of the vapour pressure of DC 5067 was based on the following guidelines: European Economic Community (EEC),EEC directive 841449 EEC, Annex, Part A, Methods for the determination of physico-chemical properties, A.4: "Vapour pressuren, EEC Publication no. L251, September 1984 Organization for Economic Co-operation and Development (OECD), OECD guidelines for testing chemicals, Guideline No.104: *Vapour pressure curvew, adopted May 12, 1981. The vapour pressure curve was constructed using the determination of the vapour pressure of DC 5067 at 26.78, 32.71 and 38.90°C, using the Static Technique. The vapour pressure of DC 5067 at 25°C was extrapolated to be 32 Pa with an estimated error of +- 3 Pa, i.e. 0.24 +- 0.02 mm Hg.
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