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EC number: 249-682-3 | CAS number: 29529-99-5
Vapour pressure
Administrative data
- 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
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- not specified
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
Test material
- Reference substance name:
- 6-(dibutylamino)-1,3,5-triazine-2,4(1H,3H)-dithione
- EC Number:
- 249-682-3
- EC Name:
- 6-(dibutylamino)-1,3,5-triazine-2,4(1H,3H)-dithione
- Cas Number:
- 29529-99-5
- Molecular formula:
- C11H20N4S2
- IUPAC Name:
- 6-(dibutylamino)-1,3,5-triazine-2,4(1H,3H)-dithione
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Key result
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Key result
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Key result
- Test no.:
- #3
- Temp.:
- 50 °C
- Vapour pressure:
- 0 Pa
Any other information on results incl. tables
The vapour pressure was measured in the temperature range of 80 °C to 120 °C. The measured vapour pressures at the corresponding temperatures are listed in Table 1. After the measurement a mass loss of approx. 2%(w/w) was determined.
Table1: Measured vapour pressures and corresponding temperatures
Temperature / °C |
Vapour pressure / hPa |
80 |
3.1 × 10-5 |
90 |
9.6 × 10-6 |
100 |
1.9 × 10-5 |
110 |
6.0 × 10-5 |
120 |
2.0 × 10-4 |
100 |
1.6 × 10-5 |
The data point measured at 80 °C was not included in the linear regression because it shows a typical deviation caused by volatile impurities at the beginning of a measurement. The data point measured at 90 °C was below the detection limit of 10-5 hPa. For this reason it was not included in the linear regression.
Figure1on page7 gives the vapour pressure (logarithmic scale) as a function of the inverse temperature (1/T, T in Kelvin). Only for better readability the temperature is also reported in a centigrade scale
Applicant's summary and conclusion
- Conclusions:
- T / °C p / hPa p / Pa
20 3.5 × 10-11 3.5 × 10-9
25 9.7 × 10-11 9.7 × 10-9
50 1.0 × 10-8 1.0 × 10-6
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