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Physical & Chemical properties

Vapour pressure

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Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2014-03-27 to 2014-04-29
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014
Report date:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: Knudsen cell

Test material

Constituent 1
Chemical structure
Reference substance name:
4,5-dihydro-2-undecyl-1H-imidazole-1-ethanol
EC Number:
205-271-0
EC Name:
4,5-dihydro-2-undecyl-1H-imidazole-1-ethanol
Cas Number:
136-99-2
Molecular formula:
C16H32N2O
IUPAC Name:
4,5-dihydro-2-undecyl-1H-imidazole-1-ethanol
Test material form:
solid: crystalline
Details on test material:
- State of aggregation:
- Particle size distribution:
- Mass median aerodynamic diameter (MMAD):
- Geometric standard deviation (GSD):
- Shape of particles:
- Surface area of particles:
- Crystal structure:
- Coating:
- Surface properties:
- Density:
- Moisture content:
- Residual solvent:
- Activation:
- Stabilisation:
- Other:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material:
- Expiration date of the lot/batch:
- Purity test date:

RADIOLABELLING INFORMATION (if applicable)
- Radiochemical purity:
- Specific activity:
- Locations of the label:
- Expiration date of radiochemical substance:

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Store in a cool, dry and well ventilated place and away from foodstuffs. In darkness at room temperature.
- Stability under test conditions: Yes
- Solubility and stability of the test substance in the solvent/vehicle: Slighthly soluble in water 33.9 mg/L
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium: Reacts with strong acids

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing:
- Preliminary purification step (if any): None
- Final dilution of a dissolved solid, stock liquid or gel: N/A
- Final preparation of a solid:

FORM AS APPLIED IN THE TEST (if different from that of starting material)

Remark: Environmental precautions: Do not allow to enter drains or waterways.
Do not discharge into the subsoil/soil
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: NIPPONT AUTOMOTIVE COATINGS Co. Ltd.
- Expiration date of the lot/batch: 5C12AA
- Purity test date: 96%STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: In darkness at room temperature
- Solubility and stability of the test substance in the solvent/vehicle:
SOLUBILITY IN WATER(20℃) : Dispersible in water.
SOLVENT SOLUBILITY : Soluble in MeOH,EtOH,Xylene,Toluene
- Stability under test conditions:
STABILITY :Stable under normal temperature and pressure.
CONDITION TO AVOID :May burn but does not ignite readily.Flammable poisonous
gases may accumulate in tanks and hopper cars.
May ignite combustible (wood,paper,oil,etc.).
INCOMPATABILITIES :OXIDIZERS(STRONG)- Fire and explosion hazard.
HAZARDOUS :Thermal decomposition products may include toxic oxides
DECOMPOSITION of carbon and nitrogen.
POLYMERIZATION :Hazardous polymerization has not been reported to
occur under normal temperatures and pressures.

TREATMENT OF TEST MATERIAL PRIOR TO TESTING: According to the requirements of the Guideline

FORM AS APPLIED IN THE TEST (if different from that of starting material)Not different from the form applied of starting material.

Results and discussion

Vapour pressure
Key result
Test no.:
#1
Temp.:
80 °C
Vapour pressure:
>= 0 Pa
Transition / decomposition
Key result
Transition / decomposition:
no

Any other information on results incl. tables

Results and Discussion

- Results: The weight loss below melting point was not significant and not reproducible. Under these conditions the vapour pressure cannot be determined with sufficient accuracy.

The determination was done applying temperatures above the melting point. The detailed results are shown in the following table:

Temperature (°C)              Weight loss (µg/min)       vT (g/cm²h)       Log vT

120              18.160       0.000218       -36.617.029

120              18.270       0.000219       -36.590.802

120              19.510       0.000234       -36.305.615

130              27       0.000320       -34.943.075

130              26       0.000317       -34.987.216

130              26       0.000315       -35.013.587

140              51       0.000611       -32.137.598

140              50.02       0.000600       -32.216.751

140              50.73       0.000609       -32.155.539

150              92       0.001104       -29.568.893

150              92       0.001107       -29.558.995

150              93.0       0.001116       -29.523.358

Estimation of log vT at 20°C= -7.0987044

Estimation of log pT at 20°C= -3.4326034

Estimation of pT at 20°C= 0.000369315 Pa = 3.69*10-4 Pa

Extrapolation of the curve to 20 °C and fitting this value in the regression curve, a vapour pressure of 3.69 × 10-4 Pa was obtained.

The determination was performed above the melting range of the test item; this value however is expected to be overestimated, because it was determined from the molten material.

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the test item at 20°C was extrapolated to be 0.000369 Pa.Executive summary:
The vapour pressure of the test item was measured with the Isothermal Thermogravimetry method according to OECD 104, EU A.4 and GLP. No deviation from the guideline was observed during the study.
The vapour pressure of the test item at 20°C was extrapolated to be 0.000369 Pa. Based on this results, the test item was considered as non volatile.
Executive summary:

The vapour pressure of the test item at 20°C was extrapolated to be 0.000369 Pa.Executive summary:

The vapour pressure of the test item was measured with the Isothermal Thermogravimetry method according to OECD 104, EU A.4 and GLP. No deviation from the guideline was observed during the study.

The vapour pressure of the test item at 20°C was extrapolated to be 0.000369 Pa. Based on this results, the test item was considered as non volatile.