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EC number: 619-020-1 | CAS number: 94361-06-5
- 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:
- 12 Nov 1998 to 26 Nov 1998
- 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:
- 27 Jul 1995
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 29 Dec 1992
- GLP compliance:
- yes
- Type of method:
- gas saturation method
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The vapour pressure at 25 °C was found by extrapolation to be 2.6E-5 Pa.
- Executive summary:
The vapour pressure of the test substance was determined by the gas saturation method in accordance with the OECD TG 104 and EU Method A.4 and was in compliance with GLP. The vapour pressure of the test substance was determined at 2.6E-5 Pa at 25 °C .
Reference
RESULTS
The first experiment at 55°C with nitrogen flow rates of 40, 60 and 80 min/min has shown that the flow rates did not correlate with the transferred amounts of test substance. Therefore, the experiment at 55 °C was repeated with longer collecting times.
In the repetition and all other measurements, the transferred amounts of test substance and vapour pressures now correlated well with the flow rates. The following results were obtained .
Table 2 Vapour pressure results
Temperature |
Nitrogen Flow Rate |
Nitrogen |
Volume at Test Temp. [ml] |
Substance |
Vapour Pressure [Pa] |
45 |
40 |
225600 |
262766 |
16.890 |
5.8E-04 |
45 |
60 |
338400 |
394150 |
18.696 |
4.3E-04 |
45 |
80 |
451200 |
525533 |
25.342 |
4.4E-04 |
55 |
40 |
156000 |
187411 |
28.778 |
1.4E-03 |
55 |
60 |
234000 |
281117 |
44.632 |
1.5E-03 |
55 |
80 |
312000 |
374823 |
58.876 |
1.5E-03 |
65 |
40 |
43200 |
53480 |
29.802 |
5.4E-03 |
65 |
60 |
64800 |
80220 |
46.692 |
5.6E-03 |
65 |
80 |
86400 |
106960 |
61.296 |
5.5E-03 |
75 |
40 |
4800 |
6118 |
9.832 |
1.6E-02 |
75 |
60 |
7200 |
9177 |
17.932 |
1.9E-02 |
75 |
80 |
9600 |
12236 |
23.446 |
1.9E-02 |
Vapour pressure curve of the test substance in the solid state: 10Log p [Pa] = 5869.9 x 1/T = 15.097
from fit of measurements between 45 and 75°C (r2 = 0.9936)
Vapour pressure at 25 °C: 2.6E-5 (extrapolated from vapour pressure curve)
The obtained results have shown that higher flow rates did not lead to lower vapour pressures which means that complete saturation was achieved in the measured flow range from 40 to 80 mln/min in the temperature range from 45 to 75 °C. The observed differences are within the estimated reproducibility of the method. No test substance was found in the second cooling trap in all experiments which means that the transported test substance was quantitatively condensed in the first cooling trap.
The vapour pressure curve log p [Pa] versus 1/f [K] was found to be linear in the temperature range from 45 °C to 75 °C. It can be concluded from the linearity of the vapour pressure curve that the extrapolated vapour pressure at 25 °C is a reliable value.
No phase change of the test substance was observed in the measured temperature range from 45 °C to 75 °C. In all experiments, the compound was in the solid state.
No problems encountered that could have affected the integrity of the study.
Table 3 Experimental Data for the Vapour Pressure Determination of the test substance
T [°C] |
T [K] |
1/f [/K] |
Nitrogen Flow Rate [mln/min] |
Collecting Time [mln] |
Volume V 1 of Nitrogen [mln] |
Volume V 2 of Nitrogen at the Test Temperature |
551) |
328.15 |
3.05E-03 |
40 |
900 |
36000 |
43249 |
551) |
328.15 |
3.05E-03 |
60 |
900 |
54000 |
64873 |
551) |
328.15 |
3.05E-03 |
80 |
900 |
72000 |
86498 |
45 |
318.15 |
3.14E-03 |
40 |
5640 |
225600 |
262766 |
45 |
318.15 |
3.14E-03 |
60 |
5640 |
338400 |
394150 |
45 |
318.15 |
3.14E-03 |
80 |
5640 |
451200 |
525533 |
55 |
328.15 |
3.05E-03 |
40 |
3900 |
156000 |
187411 |
55 |
328.15 |
3.05E-03 |
60 |
3900 |
234000 |
281117 |
55 |
328.15 |
3.05E-03 |
80 |
3900 |
312000 |
374823 |
65 |
338.15 |
2.96E-03 |
40 |
1080 |
43200 |
53480 |
65 |
338.15 |
2.96E-03 |
60 |
1080 |
64800 |
80220 |
65 |
338.15 |
2.96E-03 |
80 |
1080 |
86400 |
106960 |
75 |
348.15 |
2.87E-03 |
40 |
120 |
4800 |
6118 |
75 |
348.15 |
2.87E-03 |
60 |
120 |
7200 |
9177 |
75 |
348.15 |
2.87E-03 |
80 |
120 |
9600 |
12236 |
1) first experiment, data not used for the evaluation of the vapour pressure
Table 4 Vapour Pressure Data of of the test substance
T [°C] |
Volume mL |
Amount of Test Substance in |
Amount of Test Substance in |
Vapour Pressure [Pa] |
10log |
Vapour* |
551) |
43249 |
0.712 |
0 |
0.0001539 |
-3.81 |
1.5E-04 |
551) |
64873 |
5.766 |
0 |
0.0008310 |
-3.08 |
8.3E-04 |
551) |
86498 |
7.726 |
0 |
0.0008351 |
-3.08 |
8.4E-04 |
45 |
262766 |
16.890 |
0 |
0.0005827 |
-3.23 |
5.8E-04 |
45 |
394150 |
18.696 |
0 |
0.0004300 |
-3.37 |
4.3E-04 |
45 |
525533 |
25.342 |
0 |
0.0004371 |
-3.36 |
4.4E-04 |
55 |
187411 |
28.778 |
0 |
0.0014357 |
-2.84 |
1.4E-03 |
55 |
281117 |
44.632 |
0 |
0.0014844 |
-2.83 |
1.5x 10-3 |
55 |
374823 |
58.876 |
0 |
0.0014686 |
-2.83 |
1.5x 10-3 |
65 |
53480 |
29.802 |
0 |
0.0053689 |
-2.27 |
5.4x 10-3 |
65 |
80220 |
46.692 |
0 |
0.0056078 |
-2.25 |
5.6E-03 |
65 |
106960 |
61.296 |
0 |
0.0055213 |
-2.26 |
5.5E-03 |
75 |
6118 |
9.832 |
0 |
0.0159414 |
-1.80 |
1.6E-02 |
75 |
9177 |
17.932 |
0 |
0.0193831 |
-1.71 |
1.9E-02 |
75 |
12236 |
23.446 |
0 |
0.0190074 |
-1.72 |
1.9E-02 |
1) first experiment, data not used for the evaluation of the vapour pressure
* vapour pressure in exponential form, rounded to one figure after the decimal point
Description of key information
2.6E-5 Pa at 25 °C. OECD TG 104, GC saturation method, Widmer 1998.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
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