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EC number: 219-785-8 | CAS number: 2530-85-0
- 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
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2007-03-29 to 2007-04-01
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 25 March 2006
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- isoteniscope
- Key result
- Test no.:
- #1
- Temp.:
- 25 °C
- Vapour pressure:
- 2.3 Pa
- Conclusions:
- A vapour pressure value of 2.3 Pa at 25°C was determined by extrapolation from temperature range of 170 - 220°C for the substance in a reliable study conducted according to an appropriate test protocol, and in compliance with GLP. The result is considered reliable.
Reference
Results
Run 1
LHS column (cm Hg) | RHS column (cm Hg) | Temperature (°C) | Vapour pressure (Pa) | Temperature (K) | Reciprocal Temperature (K) | Log VP |
48.5 | 28.5 | 206.8 | 26664.47 | 479.95 | 0.002083550 | 4.425933016 |
48.2 | 28.8 | 205.5 | 25864.54 | 478.65 | 0.002089209 | 4.412704750 |
47.8 | 29.2 | 203.9 | 24797.96 | 477.05 | 0.002096216 | 4.394415964 |
47.4 | 29.6 | 202.4 | 23731.38 | 475.55 | 0.002102828 | 4.375323022 |
46.8 | 30.2 | 200.6 | 22131.51 | 473.75 | 0.002110818 | 4.345011108 |
46.4 | 30.6 | 199.1 | 21064.93 | 472.25 | 0.002117522 | 4.323560107 |
46.0 | 31.0 | 197.2 | 19998.36 | 470.35 | 0.002126076 | 4.300994279 |
45.5 | 31.5 | 195.6 | 18665.13 | 468.75 | 0.002133333 | 4.271031056 |
45.0 | 32.0 | 193.8 | 17331.91 | 466.95 | 0.002141557 | 4.238846372 |
44.8 | 32.2 | 192.1 | 16798.62 | 465.25 | 0.002149382 | 4.225273565 |
44.4 | 32.6 | 190.1 | 15732.04 | 463.25 | 0.002158662 | 4.196785027 |
43.9 | 33.1 | 188.0 | 14398.82 | 461.15 | 0.002168492 | 4.158326776 |
43.4 | 33.6 | 184.9 | 13065.59 | 458.05 | 0.002183168 | 4.116129096 |
43.0 | 34.0 | 183.1 | 11999.01 | 456.25 | 0.002191781 | 4.079145530 |
42.5 | 34.5 | 179.8 | 10665.79 | 452.95 | 0.002207749 | 4.027993007 |
42.2 | 34.8 | 177.8 | 9865.86 | 450.95 | 0.002217541 | 3.994134740 |
42.0 | 35.0 | 175.7 | 9332.57 | 448.85 | 0.002227916 | 3.970001060 |
The following regression was obtained by plotting log VP (Pa) versus 1/T (K)
Slope = -3234.627
Standard deviation = 25.332
Intercept = 11.173
Standard deviation in intercept = 0.054
The following vapour pressure relationship was obtained
Log VP (Pa) = -3234.627/Temp (K) + 11.173
Run 2
LHS column (cm Hg) | RHS column (cm Hg) | Temperature (°C) | Vapour pressure (Pa) | Temperature (K) | Reciprocal Temperature (K) | Log VP |
52.5 | 24.5 | 217.7 | 37330.26 | 490.85 | 0.002037282 | 4.572061051 |
52.0 | 25.0 | 216.4 | 35997.04 | 489.55 | 0.002042692 | 4.556266784 |
51.5 | 25.5 | 214.5 | 34663.82 | 487.65 | 0.002050651 | 4.539876368 |
51.0 | 26.0 | 213.0 | 33330.59 | 486.15 | 0.002056978 | 4.522843029 |
50.2 | 26.8 | 211.4 | 31197.43 | 484.55 | 0.002063771 | 4.494118878 |
49.6 | 27.4 | 209.4 | 29597.57 | 482.55 | 0.002072324 | 4.471255995 |
49.0 | 28.0 | 207.6 | 27997.70 | 480.75 | 0.002080083 | 4.447122315 |
48.4 | 28.6 | 205.5 | 26397.83 | 478.65 | 0.002089209 | 4.421568210 |
47.8 | 29.2 | 203.5 | 24797.96 | 476.65 | 0.002097975 | 4.394415964 |
47.2 | 29.8 | 201.8 | 23198.09 | 474.95 | 0.002105485 | 4.365452268 |
46.2 | 30.8 | 198.5 | 20531.64 | 471.65 | 0.002120216 | 4.312423741 |
45.8 | 31.2 | 196.3 | 17465.07 | 469.45 | 0.002130152 | 4.289255876 |
45.2 | 31.8 | 194.0 | 17865.20 | 467.15 | 0.002140640 | 4.252007818 |
45.0 | 32.0 | 192.1 | 17331.91 | 465.25 | 0.002149382 | 4.238846372 |
44.6 | 32.4 | 190.7 | 16265.33 | 463.85 | 0.002155869 | 4.211262851 |
44.2 | 32.8 | 189.2 | 15198.75 | 462.35 | 0.002162864 | 4.181807871 |
43.8 | 33.2 | 187.8 | 14132.17 | 460.95 | 0.002169433 | 4.150208885 |
43.5 | 33.5 | 186.4 | 13332.24 | 459.55 | 0.002176042 | 4.124903020 |
43.2 | 33.8 | 183.4 | 12532.30 | 456.55 | 0.002190341 | 4.098030874 |
42.8 | 34.2 | 181.5 | 11465.72 | 454.65 | 0.002199494 | 4.059401471 |
42.5 | 34.5 | 179.6 | 10665.79 | 452.75 | 0.002208724 | 4.027993007 |
42.0 | 35.0 | 175.8 | 9332.57 | 448.95 | 0.002227420 | 3.970001060 |
41.8 | 35.2 | 173.6 | 8799.28 | 446.75 | 0.002238388 | 3.944446956 |
41.5 | 35.5 | 171.7 | 7999.34 | 444.85 | 0.002247949 | 3.903054271 |
The following regression was obtained by plotting log VP (Pa) versus 1/T (K)
Slope = -3200.501
Standard deviation = 22.069
Intercept = 11.102
Standard deviation in intercept = 0.047
The following vapour pressure relationship was obtained
Log VP (Pa) = -3200.501/Temp (K) + 11.102
Run 3
LHS column (cm Hg) | RHS column (cm Hg) | Temperature (°C) | Vapour pressure (Pa) | Temperature (K) | Reciprocal Temperature (K) | Log VP |
48.8 | 28.2 | 206.2 | 27464.41 | 479.35 | 0.002086158 | 4.438770241 |
48.2 | 28.8 | 204.0 | 25864.54 | 477.15 | 0.002095777 | 4.412704750 |
47.5 | 29.5 | 201.8 | 23998.03 | 474.95 | 0.002105485 | 4.380175525 |
46.8 | 30.2 | 199.3 | 22131.51 | 472.45 | 0.002116626 | 4.345011108 |
46.1 | 30.9 | 196.2 | 20265.00 | 469.35 | 0.002130606 | 4.306746608 |
45.5 | 31.5 | 193.8 | 18665.13 | 466.95 | 0.002141557 | 4.271031056 |
45.0 | 32.0 | 191.8 | 17331.91 | 464.95 | 0.002150769 | 4.238846372 |
44.5 | 32.5 | 189.3 | 15998.68 | 462.45 | 0.002162396 | 4.204084266 |
44.0 | 33.0 | 186.7 | 14665.46 | 459.85 | 0.002174622 | 4.166295705 |
43.5 | 33.5 | 184.3 | 13332.24 | 457.45 | 0.002186031 | 4.124903020 |
43.2 | 33.8 | 182.1 | 12532.30 | 455.25 | 0.002196595 | 4.098030874 |
42.5 | 34.5 | 178.5 | 10665.79 | 451.65 | 0.002214104 | 4.027993007 |
42.2 | 34.8 | 176.0 | 9865.86 | 449.15 | 0.002226428 | 3.994134740 |
The following regression was obtained by plotting log VP (Pa) versus 1/T (K)
Slope = -3184.434
Standard deviation = 27.753
Intercept = 11.087
Standard deviation in intercept = 0.060
The following vapour pressure relationship was obtained
Log VP (Pa) = -3184.434/Temp (K) + 11.087
Summary of results
Run | Log [VP (25°C)] |
1 | 0.324 |
2 | 0.368 |
3 | 0.406 |
Mean | 0.366 |
Vapour pressure | 2.323 Pa |
Description of key information
Vapour pressure [3-trimethoxysilylpropyl methacrylate]: 2.3 Pa at 25°C (OECD 104)
Vapour pressure [3-(trihydroxysilyl)propyl methacrylate]: 1.2E-05 Pa at 25°C (QSAR)
Vapour pressure methanol: 12790 Pa at 20°C
Key value for chemical safety assessment
- Vapour pressure:
- 2.3 Pa
- at the temperature of:
- 25 °C
Additional information
A measured vapour pressure of 2.3 Pa at 25°C was determined by extrapolation from measurements in the temperature range of 170-220°C. The study was performed using the isoteniscope method in accordance with OECD Test Guideline 104 and in compliance with GLP. The result is considered to be reliable and is selected as key study.
In other secondary sources to which reliability could not be assigned, vapour pressure values of approximately 1600 Pa, 2100 Pa, 3700 Pa, 8900 Pa and 23900 Pa at 130.2°C, 138°C, 150.56°C, 172.5°C and 202.49°C respectively were reported for the substance. Similarly, a limit vapour pressure of < 200 Pa at 20°C was also reported for the substance.
In contact with water, the registered substance hydrolyses rapidly forming 3-(trihydroxysilyl)propyl methacrylate and methanol. The vapour pressure of the silanol hydrolysis product was estimated to be 1.2E-05 Pa at 25°C using an accepted QSAR estimation method.
Methanol has a reported vapour pressure of 12790 Pa at 20°C (OECD 2004a).
Reference:
OECD (2004a): SIDS Initial Assessment Report for SIAM 19, Berlin, Germany, 18-20 October 2004, Methanol, CAS 67-56-1.
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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