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EC number: 605-140-1 | CAS number: 158237-07-1
- 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:
- February 22, 1995 - May 6,1996
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes
- Type of method:
- gas saturation method
- Temp.:
- 20 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: 5x10E-10
- Temp.:
- 25 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: 1x10E-09
Reference
Summary of results
The table given below summarizes how the vapour pressure is calculated from the quantities of vaporized test item transported into the trap and the volume of nitrogen which provided the transport. The gas volume under study conditions is calculated from the stated reduced volume ("normalized volume") by substituting the measured temperature and the total saturator column pressure in the general gas equation. The first runs measured at 60 °C (runs 7-9) are not included due to the line.
Vapour pressures calculated from the study data
Test parameters |
Quantities of YRC 2388 transported 14) [mg] |
Gas volume To.po 15) [ L ] |
Temperature T1 [ K ] |
Pressure P1 16) [hPa] |
Gas volume T1, p1 17) [ L ] |
Vapour pressures of YRC 2388 [hPa] [Pa] |
|
50°C- 4L/min |
0.009294 |
5716 |
323.15 |
1067 |
6420.08 |
1.112E-07 |
1.112E-05 |
50°C- 2L/min |
0.008123 |
5760 |
323.15 |
1060 |
6512.22 |
9.577E-08 |
9.577E-06 |
50°C-1L/min |
0.010740 |
5760 |
323.25 |
1056 |
6538.91 |
1.262E-07 |
1.262E-05 |
40°C- 4L/min |
0.008658 |
23395 |
313.35 |
1066 |
25503.95 |
2.527E-08 |
2.527E-06 |
40°C-1L/min |
0.008286 |
16317 |
313.15 |
1051 |
18030.10 |
3.420E-08 |
3.420E-06 |
60°C- 4L/min |
0.025786 |
3000 |
333.35 |
1066 |
3479.15 |
5.870E-07 |
5.870E-05 |
60°C- 2L/min |
0.005041 |
500 |
333.32 |
1057 |
584.74 |
6.828E-07 |
6.828E-05 |
60°C- 2L/min |
0.007398 |
500 |
333.37 |
1055 |
585.94 |
1.000E-06 |
0.0001000 |
60°C- 2L/min |
0.007769 |
.500 |
333.32 |
1062 |
581.99 |
1.057E-06 |
0.0001057 |
55°C- 2L/min |
0.008040 |
1000 |
328.22 |
1066 |
1141.87 |
5.491E-07 |
5.491 E-05 |
60°C-1L/min |
0.005245 |
500 |
333.63 |
1069 |
578.72 |
7.184E-07 |
7.184E-05 |
Notes:
14) results from table in previous section, mean from 2 measurements
15) Reduced gas volume under normal conditions, Tg = 273.15 K, p0 = 1013 hPa
16) average air pressure during the run
17) Gas volume under test conditions at temperature T1 and at pressure p1 measured in saturator column.
It follows from the table that the flow rate does not exert a significant influence on the vapour pressures determined. The differences between the results for 1 L/min, 2 L/min and 4 L/min reflect only the statistical error of the method and it was assumed that the flow-rates chosen are sufficiently slow to reach vapour pressure equilibrium in the saturator column. Consequently, all values from the pressures and temperatures given in the table shown above were used for the calculation of a vapour pressure curve according to the Clausius-Clapeyron equation:
log p = a + b x 1/K
The regression coefficients for the Clausius-Clapeyron equation given in the table below was determined by regression calculation using the computer program Statgraphics, version 7.
Results from regression calculation:
|
Regression coefficient a
|
Regression coefficient b
|
Correlation coefficient
|
R-squared
|
Test item |
16.9833
|
- 7698.56 |
- 0.976545 |
95.36 %
|
Using the calculated regression coefficient the partial vapour pressures for 20 and 25 °C shown in the table below are obtained by extrapolation. The corresponding vapour saturation concentrations were calculated by means of the general gas equation.
Vapour Pressures for 20 °C and 25 °C:
Test item |
Vapour pressure at 20°C:
5.3x10E-08[Pa] 5.3x10E-10 [hPa] |
Vapour concentration at 20°C: 7.6 [ng/m3]
|
Vapour pressure at 25°C:
1.5x10E-07[Pa] 1.5x10E-9 [hPa] |
Vapour concentration at 25°C: 21 [ng/m3] |
Conclusion
The vapour pressure of YRC 2388 determined at 70, 60, 55, 50 and 40 °C by the gas saturation method according to OECD Guideline No. 104 (corresponding to EEC Guideline A4) yielded by extrapolation of the vapour pressure curve the following vapour pressures and vapour concentrations for 20 and 25 °C:
Test item |
Vapour pressure at 20 °C
5x10E-08 [Pa] 5x10E-10 [hPa]
|
Vapour concentration at 20°C: 7. 6 [ng/m3]
|
Vapour pressure at 25°C:
1.0x10E-07[Pa] 1.0x10E-09 [hPa] |
Vapour concentration at 25°C: 21 [ng/m3] |
Description of key information
Vapour pressure: 5.0E-10 hPa at 20 °C; 1.0E-9 hPa at 25 °C (OECD Guideline 104, gas saturation method)
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 25 °C
Additional information
According to Regulation EC No. 440/2008 Method A.4, the vapour pressure values of the test item for the temperatures 20 and 25 °C were calculated by extrapolation of the measured vapour pressure curve.
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