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EC number: 950-718-1 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- The study was conducted between 08 January 2019 and 10 January 2019.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Specific details on test material used for the study:
- Identification: PG-RAW-90-032
Appearance/physical state: Clear colorless liquid
Storage Conditions: Approximately 4 °C in the dark - Test no.:
- #1
- Temp.:
- 25 °C
- Vapour pressure:
- 1.15 Pa
- Conclusions:
- The vapour pressure of PG-RAW-90-032 was investigated using the vapour pressure balance method according to OECD TG 104, in a reliable GLP study. The vapour pressure of PG-RAW-90-032 was found to be 1.15 Pa at 25 °C.
- Executive summary:
The vapour pressure of PG-RAW-90-032 was investigated using the vapour pressure balance method according to OECD TG 104, in a reliable GLP study. The vapour pressure of PG-RAW-90-032 was found to be 1.15 Pa at 25 °C.
Reference
Recorded temperatures, mass differences and the resulting calculated values of vapor pressure are shown in the following tables:
Run 1
Vapour Pressure Data
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
5 |
278.15 |
0.003595 |
95.98 |
9.598e-08 |
0.13324 |
-0.87537 |
6 |
279.15 |
0.003582 |
106.61 |
1.066e-07 |
0.14800 |
-0.82974 |
7 |
280.15 |
0.003570 |
117.65 |
1.177e-07 |
0.16333 |
-0.78693 |
8 |
281.15 |
0.003557 |
135.06 |
1.351e-07 |
0.18750 |
-0.72700 |
9 |
282.15 |
0.003544 |
153.84 |
1.538e-07 |
0.21357 |
-0.67046 |
10 |
283.15 |
0.003532 |
165.17 |
1.652e-07 |
0.22930 |
-0.63960 |
11 |
284.15 |
0.003519 |
187.60 |
1.876e-07 |
0.26044 |
-0.58429 |
12 |
285.15 |
0.003507 |
203.04 |
2.030e-07 |
0.28187 |
-0.54995 |
13 |
286.15 |
0.003495 |
233.13 |
2.331e-07 |
0.32364 |
-0.48994 |
14 |
287.15 |
0.003483 |
259.46 |
2.595e-07 |
0.36020 |
-0.44346 |
15 |
288.15 |
0.003470 |
290.47 |
2.905e-07 |
0.40325 |
-0.39443 |
A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 1 gives the following statistical data using an unweighted least squares treatment.
Slope: |
-3.85 x 103 |
Standard error in slope: |
47.0
|
Intercept: |
13.0 |
Standard error in intercept: |
0.166 |
The results obtained indicate the following vapor pressure relationship:
Log10(Vp (Pa)) = -3.85 x 103/temp(K) + 13.0
The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of 5.08 x 10-2.
Run 2
Vapor Pressure Data
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
5 |
278.15 |
0.003595 |
96.95 |
9.695e-08 |
0.13459 |
-0.87099 |
6 |
279.15 |
0.003582 |
107.15 |
1.072e-07 |
0.14875 |
-0.82754 |
7 |
280.15 |
0.003570 |
118.84 |
1.188e-07 |
0.16498 |
-0.78257 |
8 |
281.15 |
0.003557 |
128.25 |
1.282e-07 |
0.17804 |
-0.74948 |
9 |
282.15 |
0.003544 |
146.26 |
1.463e-07 |
0.20305 |
-0.69240 |
10 |
283.15 |
0.003532 |
161.63 |
1.616e-07 |
0.22438 |
-0.64902 |
11 |
284.15 |
0.003519 |
177.67 |
1.777e-07 |
0.24665 |
-0.60792 |
12 |
285.15 |
0.003507 |
204.24 |
2.042e-07 |
0.28354 |
-0.54739 |
13 |
286.15 |
0.003495 |
221.35 |
2.214e-07 |
0.30729 |
-0.51245 |
14 |
287.15 |
0.003483 |
256.12 |
2.561e-07 |
0.35556 |
-0.44909 |
15 |
288.15 |
0.003470 |
340.98 |
3.410e-07 |
0.47337 |
-0.32480 |
A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 2 gives the following statistical data using an unweighted least squares treatment.
Slope: |
-4.04 x 103 |
Standard error in slope: |
200
|
Intercept: |
13.6 |
Standard error in intercept: |
0.706 |
The results obtained indicate the following vapor pressure relationship:
Log10(Vp (Pa)) = -4.04 x 103/temp(K) + 13.6
The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of 8.24 x 10-2.
Run 3
Vapor Pressure Data
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
5 |
278.15 |
0.003595 |
95.17 |
9.517e-08 |
0.13212 |
-0.87903 |
6 |
279.15 |
0.003582 |
101.07 |
1.011e-07 |
0.14031 |
-0.85291 |
7 |
280.15 |
0.003570 |
117.05 |
1.171e-07 |
0.16250 |
-0.78915 |
8 |
281.15 |
0.003557 |
130.00 |
1.300e-07 |
0.18047 |
-0.74359 |
9 |
282.15 |
0.003544 |
170.29 |
1.703e-07 |
0.23641 |
-0.62633 |
10 |
283.15 |
0.003532 |
168.77 |
1.688e-07 |
0.23430 |
-0.63023 |
11 |
284.15 |
0.003519 |
180.78 |
1.808e-07 |
0.25097 |
-0.60038 |
12 |
285.15 |
0.003507 |
204.17 |
2.042e-07 |
0.28344 |
-0.54754 |
13 |
286.15 |
0.003495 |
230.28 |
2.303e-07 |
0.31969 |
-0.49527 |
14 |
287.15 |
0.003483 |
253.27 |
2.533e-07 |
0.35160 |
-0.45395 |
15 |
288.15 |
0.003470 |
286.49 |
2.865e-07 |
0.39772 |
-0.40042 |
A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 3 gives the following statistical data using an unweighted least squares treatment.
Slope: |
-3.86 x 103 |
Standard error in slope: |
166
|
Intercept: |
13.0 |
Standard error in intercept: |
0.586 |
The results obtained indicate the following vapor pressure relationship:
Log10(Vp (Pa)) = -3.86 x 103/temp(K) + 13.0
The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of 4.95 x 10-2.
The values of vapor pressure at 25 °C, extrapolated from each graph, are summarized in the following table:
Summary of Vapor Pressure Data
Run |
Log10[Vp(25 ºC)] |
1 |
5.08 x 10-2 |
2 |
8.24 x 10-2 |
3 |
4.95 x 10-2 |
Mean |
6.09 x 10-2 |
Vapor Pressure |
1.15 Pa |
Description of key information
The vapour pressure of PG-RAW-90-032 was investigated using the vapour pressure balance method according to OECD TG 104, in a reliable GLP study. The vapour pressure of PG-RAW-90-032 was found to be 1.15 Pa at 25 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 1.15 Pa
- at the temperature of:
- 25 °C
Additional information
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