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EC number: 256-974-4 | CAS number: 51115-67-4
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- April 2017 - November 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- Vapour Pressure Balance Methodology, 2006
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
Test material
- Reference substance name:
- 2-isopropyl-N,2,3-trimethylbutyramide
- EC Number:
- 256-974-4
- EC Name:
- 2-isopropyl-N,2,3-trimethylbutyramide
- Cas Number:
- 51115-67-4
- Molecular formula:
- C10H21NO
- IUPAC Name:
- 2-isopropyl-N,2,3-trimethylbutyramide
- Test material form:
- solid
Constituent 1
- Specific details on test material used for the study:
- Batch number: 80100005
Expiration date: 13 October 2018
Purity: 99.8%
Stored at Room temperature (nominally 15 to 25C), dark
Physical state/appearance: White solid
Results and discussion
Vapour pressureopen allclose all
- Test no.:
- #1
- Temp.:
- 25 °C
- Vapour pressure:
- 0.31 Pa
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 0.32 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.3 Pa
- Remarks on result:
- other:
- Remarks:
- mean vapour pressure
Any other information on results incl. tables
Table 1: Full results of two runs performed.
| Run 1 | Run 2 | |
| Correlation (r): | -0.9842 | -0.9936 |
| Slope: | -6579 | -6214 |
| Intercept: | 21.56 | 20.35 |
| Vp (Pa) at 25C | 0.31 | 0.32 |
The runs yielded to a mean vapour pressure at 25°C of 0.3 Pa.
Applicant's summary and conclusion
- Conclusions:
- WS-23 was determined to have a vapour pressure of 0.3 Pa at 25°C.
- Executive summary:
The vapour pressure of WS-23 was determined by Vapour pressure balance. WS-23 was determined to have a vapour pressure of 0.3 Pa at 25°C.
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