Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 682-239-6 | CAS number: 1190931-41-9
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 05 January 2011 to 20 January 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 113 (Screening test for thermal stability and stability in air)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- dynamic method
Test material
- Reference substance name:
- 2,2-difluoro-2-{[2,2,4,5-tetrafluoro-5-(trifluoromethoxy)-1,3-dioxolan-4-yl]oxy}acetic acid
- EC Number:
- 682-239-6
- Cas Number:
- 1190931-41-9
- Molecular formula:
- C6HF9O6
- IUPAC Name:
- 2,2-difluoro-2-{[2,2,4,5-tetrafluoro-5-(trifluoromethoxy)-1,3-dioxolan-4-yl]oxy}acetic acid
- Details on test material:
- Sample description according to the CoA:
cC6O4 Acid, sample 240/13
- Substance type: pure organic substance
- Physical state: liquid
- Analytical purity: 99.99% (referred to the organic substance)
- Impurities (identity and concentrations):
HF < 10 ppm,
organic impurity < 150 ppm
water: 1.1 % w/w
- Isomers composition: not reported
- Purity test date: 17-01-2011
- Lot/batch No.: 240/13
- Expiration date of the lot/batch: not reported
- Stability under test conditions: not reported
- Storage condition of test material: Room temperature, protected from moisture and light.
Constituent 1
- Specific details on test material used for the study:
- - Source: Solvay Solexis (manufacturer)
- Lot/batch number of test material: Sample 240/13
- Substance type: pure organic substance
- Physical state: liquid
- Analytical purity: 99.99% (referred to the organic substance)
- Impurities (identity and concentrations):
HF < 10 ppm,
organic impurity < 150 ppm
water: 1.1 % w/w
- Isomers composition: not reported
- Purity test date: 17-01-2011
- Lot/batch No.: 240/13
- Expiration date of the lot/batch: 31 December 2020
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- ca. 20 °C
- Vapour pressure:
- ca. 0.16 hPa
- Remarks on result:
- other: Calculated according to the Antoine equation.
- Key result
- Temp.:
- ca. 25 °C
- Vapour pressure:
- ca. 0.26 hPa
- Remarks on result:
- other: Calculated according to the Antoine equation.
- Key result
- Temp.:
- ca. 50 °C
- Vapour pressure:
- ca. 2.5 hPa
- Remarks on result:
- other: Calculated according to the Antoine equation.
Any other information on results incl. tables
Thermal Stability (DSC)
ADSC-measurement in closed glass crucible showed no endothermic or thermal effects up to the final temperature of 250 °C. An additional measurement in an open aluminium crucible showed an endothermic effect in the temperature range of 70 – 100 °C and a second one in the temperature range of 150 – 180 °C with an onset of 166.6 °C (most likely boiling).
Graphical representationsof the DSC analysis are reported (Figure 1 and Figure 2).
Vapour Pressure (Dynamic Method)
The vapour pressure was measured with the dynamic method in the temperature range of 69 °C to 164 °C.The measured vapour pressures at the corresponding temperatures are listed in the following table:
Temperature / °C |
Vapour pressure / hPa |
69.4 |
10.3 |
80.6 |
21.1 |
95.6 |
50.4 |
109.7 |
101.1 |
118.3 |
149.5 |
124.7 |
200.5 |
134.2 |
298.2 |
141.8 |
400.8 |
147.4 |
500.4 |
152.4 |
600.6 |
156.8 |
699.7 |
164.4 |
898.8 |
On figure 3 (attached), the vapour pressure (logarithmic scale) as a function of the inverse temperature (1/T, T in Kelvin) is reported.
The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C. For a better correlation the first measured value was not considered.
Applicant's summary and conclusion
- Conclusions:
- The vapor pressure values calculated through the Antoine equation and based on experimental measurements conducted in the temperature range of 69 °C-164 °C are the following:
0.16 hPa at 20 °C
0.26 hPa at 25 °C
2.50 hPa at 50 °C - Executive summary:
The vapour pressure of the test item C6O4 Acidwas determined under GLPaccording to theEU method A.4. “Vapour pressure: Dynamic method”, to the OECD guideline 104 (2006) “Vapour pressure” and to the OECD guideline 113 (1981) “Screening test for thermal stability and stability in air”.
As a preliminary measurement the determination of the thermal stability was carried out by differential scanning calorimetry (DSC). ADSC-measurement in closed glass crucible showed no endothermic or thermal effects up to the final temperature of 250 °C. An additional measurement in an open aluminium crucible showed an endothermic effect in the temperature range of 70 – 100 °C and a second one in the temperature range of 150 – 180 °C with an onset of 166.6 °C (most likely boiling).
For determining the vapour pressure, the dynamic method was used. According to this method the vapour pressure is measured by determining the boiling point of the test item at various specified pressures between roughly 10 and 1000 hPa. The temperature is measured by a resistance thermometer. Equilibrium is reached when a constant boiling temperature is achieved at a given pressure. After recording this point the pressure is increased step by step and if possible up to the boiling point.
12 measuring points was taken in the temperature range of 69 °C to 164 °C.
Vapour pressure values for 20, 25 and 50 °C were calculated through the Antoine equation using the A,B,C constants as reported in the equation. For a better correlation the first measured value was not considered.
The calculated values for vapor pressure of the test item C6O4 acid are the following:
0.16 hPa at 20 °C
0.26 hPa at 25 °C
2.50 hPa at 50 °C
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
