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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
13 July 2017 - 31 July 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes
Type of method:
effusion method: isothermal thermogravimetry
Key result
Temp.:
20 °C
Vapour pressure:
< 0 Pa
Temp.:
25 °C
Vapour pressure:
< 0 Pa

Table 1           Results of the Vapour pressure Isothermal TGA Analysis

Temperature
[
°C]

Weight loss
g/min]

νT
[g/cm2/h]

logνT

logPT

PT
[Pa]

200

5.59559

6.68 x 10-4

-3.18

0.98

9.6

 

3.31320

3.95 x 10-4

-3.40

0.70

5.0

210

5.10081

6.09 x 10-4

-3.22

0.93

8.5

 

2.94641

3.52 x 10-4

-3.45

0.63

4.3

220

4.83926

5.78 x 10-4

-3.24

0.90

8.0

 

2.79286

3.33 x 10-4

-3.48

0.60

4.0

230

4.67520

5.58 x 10-4

-3.25

0.88

7.7

 

2.91369

3.48 x 10-4

-3.46

0.63

4.2

 

Conclusions:
The vapour pressure of Reaction products of monoethanolamine and boric acid (1:3) in an EU Method A.4 study conducted under GLP conditions was < 1.3 x 10(-8) Pa and < 3.9 x 10(-8) at 20°C (293K) and 25°C (298K), respectively.


Executive summary:

The isothermal TGA effusion method was applied for the determination of the vapour pressure of MEA Polyborate 1:3.

The vapour pressure of the test item at 20°C (293K) and 25°C (298K) was:

   

 

20°C

25°C

 

[Pa]

[mm Hg]

[Pa]

[mm Hg]

Test item

< 1.3 x 10-8

<1.0 x10-10

< 3.9 x10-8

<3.0 x10-10

Description of key information

The vapour pressure of Reaction products of monoethanolamine and boric acid (1:3) in an EU Method A.4 study conducted under GLP conditions was < 1.3 x 10(-8) Pa and < 3.9 x 10(-8) at 20°C (293K) and 25°C (298K), respectively.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
20 °C

Additional information