2,2'-butyliminodiethanol

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

calculation (if not (Q)SAR)

Remarks:

estimated by calculation

Adequacy of study:

key study

Study period:

2015-05-20

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: applied equation is based on newly generated data

Justification for type of information:

A two parameter correlation was developed for BDEA using measured data on boiling point. The vapour pressure of BDEA can be calculated with the developed formula without the use of in silico tools.

Qualifier:

no guideline followed

Principles of method if other than guideline:

The vapour pressure can be estimated by using the following equation:
ln (P) = -7298/T + 20.030, whereby
P = pressure (Pa), and T = temperature (K).

GLP compliance:

no

Remarks:

not applicable

Type of method:

other: calculation method

Temp.:

25 °C

Vapour pressure:

1.2 Pa

Remarks on result:

other: based on calculation

no other infromation provided

Conclusions:

A vapour pressure of 1.2 Pa at 25 °C was calculated.

Executive summary:

The vapour pressure estimation is performed by using a correlation equation (Chemservice S.A., 2015) which is based on experimental data (ESC, 2013). Pressure/Temperature data point pairs at different absolute pressures have been carefully collected for pure BDEA using vacuum distillation. Based on these data, a two-parameter correlation equation has been determined which was applied to calculate the vapour pressure at 25 °C. As final result, a vapour pressure of 1.2 Pa was calculated.

Description of key information

Vapour pressure_Calculation method: 1.2 Pa at 25 °C

Key value for chemical safety assessment

Vapour pressure:

1.2 Pa

at the temperature of:

25 °C

Additional information

The vapour pressure estimation for Butyldiethanolamine (CAS 102 -79 -4) is performed by using a correlation equation (Chemservice S.A., 2015) which is based on experimental data (ESC, 2013). Pressure/Temperature data point pairs at different absolute pressures have been carefully collected for pure BDEA using vacuum distillation. Based on these data, a two-parameter correlation equation has been determined which was applied to calculate the vapour pressure at 25 °C. As final result, a vapour pressure of 1.2 Pa was calculated.

According to information provided in the Material Safety Data Sheet (Taminco BVBA, 2010), the substance has a vapour pressure of 1.33 Pa at 25 °C.