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EC number: 234-409-2 | CAS number: 12001-85-3
- 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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
- Specific details on test material used for the study:
- - Batch: A036/99 (Supplier batch number: SCC-1709-0300)
- Expiration date: 31 August 2018
- Storage condition of test material: Room temperature, protected from light - Temp.:
- 20 °C
- Vapour pressure:
- 1.3 Pa
- Remarks on result:
- other: Volatile part of test item
- Temp.:
- 25 °C
- Vapour pressure:
- 1.9 Pa
- Remarks on result:
- other: Volatile part of test item
- Temp.:
- 20 °C
- Vapour pressure:
- 0.026 Pa
- Remarks on result:
- other: Other (non-volatile) part of the test item
- Temp.:
- 25 °C
- Vapour pressure:
- 0.035 Pa
- Remarks on result:
- other: Other (non-volatile) part of the test item
- Conclusions:
- The vapour pressure of a volatile part of the test item, naphthenic acids, zinc salts was determined at 20°C and 25°C and found to be 1.3 Pa and 1.9 Pa, respectively. Vapour pressure of a non-volatile part of the test item, naphthenic acids, zinc salts, was determined at 20°C and 25°C and found to be 0.026 Pa and 0.035 Pa respectively.
- Executive summary:
The vapour pressure of naphthenic acids, zinc salts was determined in a GLP-compliant isothermal TGA effusion method test, following OECD guideline 104 (CRL 2018). The study is considered relevant and reliable for use.
The vapour pressure of a volatile part of the test item, naphthenic acids, zinc salts was determined at 20°C and 25°C and found to be 1.3 Pa and 1.9 Pa, respectively. Vapour pressure of a non-volatile part of the test item, naphthenic acids, zinc salts, was determined at 20°C and 25°C and found to be 0.026 Pa and 0.035 Pa respectively. It was not possible to assign the measured vapour pressure values to individual constituents.
Reference
The test item is a mixture of components. Weight loss was observed at low temperatures and at high temperatures. Evaporation was observed at low temperatures and at higher temperatures. Vapour pressure was calculated for both ranges.
Low temperatures (range 40°C – 70°C)
The vapour pressure regression curve constructed using the data of
Experiment 2 had a coefficient of correlation of < 0.99. The data for
this Experiment was not used for the calculation of the vapour pressure
in the range 40°C – 70°C. The vapour pressure regression curve of the
log PT of the test item as function of the reciprocal
temperatures had an equation curve of:
log PT= -2473´1/T + 8.56 (r = 0.992, n = 8).
Table 1. Results of the Vapour pressure Isothermal TGA Analysis
Experiment |
Temperature |
Weight loss |
νT |
logνT |
logPT |
PT |
1 |
40 |
2.81651 |
3.36 x 10-4 |
-3.47 |
0.69 |
4.9 |
|
50 |
4.04989 |
4.83 x 10-4 |
-3.32 |
0.89 |
7.8 |
|
60 |
6.98752 |
8.34 x 10-4 |
-3.08 |
1.20 |
16 |
|
70 |
9.34732 |
1.12 x 10-3 |
-2.95 |
1.36 |
23 |
21 |
40 |
1.90283 |
2.27 x 10-4 |
-3.64 |
0.47 |
3.0 |
|
50 |
2.52434 |
3.01 x 10-4 |
-3.52 |
0.63 |
4.3 |
|
60 |
5.30431 |
6.33 x 10-4 |
-3.20 |
1.04 |
11 |
|
70 |
7.49220 |
8.94 x 10-4 |
-3.05 |
1.23 |
17 |
3 |
40 |
2.53388 |
3.02 x 10-4 |
-3.52 |
0.63 |
4.3 |
|
50 |
4.08955 |
4.88 x 10-4 |
-3.31 |
0.90 |
7.9 |
|
60 |
6.62851 |
7.91 x 10-4 |
-3.10 |
1.17 |
15 |
|
70 |
8.52272 |
1.02 x 10-3 |
-2.99 |
1.31 |
20 |
1not used for calculation of the vapour pressure
Table 2. Vapour Pressure for volatile part of the test item
Temperature |
logPT |
PT |
PT |
20 |
0.13 |
1.3 |
1.0 x 10-2 |
25 |
0.27 |
1.9 |
1.4 x 10-2 |
Higher temperatures (range 200°C – 230°C)
The vapour pressure regression curve constructed using the data of
Experiment 1 had a coefficient of correlation of < 0.99. The data for
this Experiment was not used for the calculation of the vapour pressure
in the range 200°C – 230°C. The vapour pressure regression curve of the
log PT of the test item as function of the reciprocal
temperatures has equation curve of:
log PT= -2230´1/T + 6.03 (r = 0.996, n = 8).
Table 3. Results of the Vapour pressure Isothermal TGA Analysis
Experiment |
Temperature |
Weight loss |
νT |
logνT |
logPT |
PT |
11 |
200 |
9.32893 |
1.11 x 10-3 |
-2.95 |
1.36 |
23 |
|
210 |
10.5845 |
1.26 x 10-3 |
-2.90 |
1.43 |
27 |
|
220 |
13.3540 |
1.59 x 10-3 |
-2.80 |
1.56 |
36 |
|
230 |
14.6929 |
1.75 x 10-3 |
-2.76 |
1.61 |
41 |
2 |
200 |
8.77322 |
1.05 x 10-3 |
-2.98 |
1.32 |
21 |
|
210 |
9.96741 |
1.19 x 10-3 |
-2.92 |
1.39 |
25 |
|
220 |
12.0298 |
1.44 x 10-3 |
-2.84 |
1.50 |
31 |
|
230 |
14.1726 |
1.69 x 10-3 |
-2.77 |
1.59 |
39 |
3 |
200 |
8.68246 |
1.04 x 10-3 |
-2.98 |
1.32 |
21 |
|
210 |
10.1961 |
1.22 x 10-3 |
-2.91 |
1.41 |
25 |
|
220 |
12.2676 |
1.46 x 10-3 |
-2.83 |
1.51 |
32 |
|
230 |
14.6121 |
1.74 x 10-3 |
-2.76 |
1.61 |
40 |
1not used for calculation of the vapour pressure
Table 4. Vapour Pressure of a major part of the Test Item
Temperature |
logPT |
PT |
PT |
20 |
-1.58 |
2.6 x 10-2 |
2.0 x 10-4 |
25 |
-1.45 |
3.5 x 10-2 |
2.6 x 10-4 |
Description of key information
The vapour pressure of a volatile part of the test item, naphthenic acids, zinc salts was determined at 20°C and 25°C and found to be 1.3 Pa and 1.9 Pa, respectively. Vapour pressure of a non-volatile part of the test item, naphthenic acids, zinc salts, was determined at 20°C and 25°C and found to be 0.026 Pa and 0.035 Pa respectively. It was not possible to assign the measured vapour pressure values to individual constituents.
Key value for chemical safety assessment
Additional information
The vapour pressure of naphthenic acids, zinc salts was determined in a GLP-compliant isothermal TGA effusion method test, following OECD guideline 104 (CRL 2018). The study is considered relevant and reliable for use. The vapour pressure of a volatile part of the test item, naphthenic acids, zinc salts was determined at 20°C and 25°C and found to be 1.3 Pa and 1.9 Pa, respectively. Vapour pressure of a non-volatile part of the test item, naphthenic acids, zinc salts, was determined at 20°C and 25°C and found to be 0.026 Pa and 0.035 Pa respectively. It was not possible to assign the measured vapour pressure values to individual constituents.
Naphthenic acids, zinc salts is a UVCB consisting of a large number of different constituents. Vapour pressure values have been predicted for representative structures within the UVCB. The vapour pressure QSAR study is assigned a reliability score of 2 (reliable with restrictions) as it is an accepted calculation method. The vapour pressure of the representative structures of zinc naphthenate were estimated with the QSAR model (MPVPBP) using the Modified Grain Method. The QSAR estimated vapour pressures of representative constituents of zinc naphthenate are in the range of 3.41 E-05 to 31.5 Pa.
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