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EC number: 224-246-5 | CAS number: 4264-83-9
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12 October 2017 - 24 January 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- 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 (incl. QA statement)
- Type of method:
- effusion method: Knudsen cell
Test material
- Reference substance name:
- Disodium 4-nitrophenyl phosphate
- EC Number:
- 224-246-5
- EC Name:
- Disodium 4-nitrophenyl phosphate
- Cas Number:
- 4264-83-9
- Molecular formula:
- C6H4NO6P.2Na
- IUPAC Name:
- disodium 4-nitrophenyl phosphate
- Reference substance name:
- Water
- EC Number:
- 231-791-2
- EC Name:
- Water
- Cas Number:
- 7732-18-5
- Molecular formula:
- H2O
- IUPAC Name:
- Oxidane
- Test material form:
- solid
- Details on test material:
- Batch Nr: 11674900
Storage: 2-8°C.
Constituent 1
impurity 1
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.15 hPa
- Remarks on result:
- other: estimated according to the measured vapour pressures
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.15 hPa
- Remarks on result:
- other: estimated according to the measured vapour pressures
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- 0.15 hPa
- Remarks on result:
- other: estimated according to the measured vapour pressures
Any other information on results incl. tables
In three measurements, the vapour pressure was determined for 7 temperatures in the temperature range of 25 – 56 °C.
Due to the fact that the test item showed a decreasing vapour pressure with increasing temperature, the Antoine constants cannot be evaluated in the measured temperature range. Therefore,the vapour pressure was estimated according to the measured vapour pressures for the temperatures 20, 25 and 50°C.
The measured vapour pressure values of the measurement together with the measured temperatures are listed in the table in the table in the section "overall remarks".
Applicant's summary and conclusion
- Conclusions:
- The test item 4-Nitrophenyl phosphate disodium salt (CAS no. 4264-83-9) showed no evaluable vapour pressure curve in the temperature range of 25 to 56 °C. Due to this result, the vapour pressures for the temperatures 20, 25 and 50 °C are estimated on the basis of the maximum measured vapour pressures, according to Regulation EC No. 440/2008 Method A.4. Vapour Pressure and OECD Test Guideline 104 (2006). The vapour pressure of the test item was 0.15 hPa at 20°C, 25°C and 50°C.
- Executive summary:
The test item 4-Nitrophenyl phosphate disodium salt (CAS no. 4264-83-9) showed no evaluable vapour pressure curve in the temperature range of 25 to 56 °C. Due to this result, the vapour pressures for the temperatures 20, 25 and 50 °C are estimated on the basis of the maximum measured vapour pressures, according to Regulation EC No. 440/2008 Method A.4. Vapour Pressure and OECD Test Guideline 104 (2006). The vapour pressure of the test item was 0.15 hPa at 20°C, 25°C and 50°C.
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