Reaction products of monoethanolamine and boric acid (1:3)

Vapour pressure

Link to relevant study record(s)

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

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 [µg/min]	νT [g/cm^2/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