[3-(2,3-epoxypropoxy)propyl]triethoxysilane

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

(Q)SAR

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: The result was obtained by an appropriate predictive method.

Justification for type of information:

QSAR prediction: migrated from IUCLID 5.6

Principles of method if other than guideline:

The result was obtained using an appropriate QSAR method (see attached QMRF and QPRF for details).

Test no.:

#1

Temp.:

25 °C

Vapour pressure:

0.07 Pa

Conclusions:

A vapour presssure of 0.07 Pa at 25°C was determined for the substance using an appropriate estimation method. The result is considered reliable.

Description of key information

Vapour pressure [[3-(2,3-epoxypropoxy)propyl]triethoxysilane]: 0.07 Pa at 25°C (QSAR)

Vapour pressure [2,3-dihydroxypropoxypropylsilanetriol] : 1.7E-07 Pa at 25°C (QSAR)

Vapour pressure [ethanol]: 7910 Pa at 25°C

Key value for chemical safety assessment

Vapour pressure:

0.07 Pa

at the temperature of:

25 °C

Additional information

A predicted vapour pressure of 0.07 Pa at 25°C was determined for the registered substance using a validated QSAR estimation method; the result is considered to be reliable and is selected as key study.

 

In contact with water, [3-(2,3-epoxypropoxy)propyl]triethoxysilane will hydrolyse at a moderately rapidly rate to form 2,3-dihydroxypropoxypropylsilanetriol and ethanol.

 

The vapour pressure of the silanol hydrolysis product, 2,3-dihydroxypropoxypropylsilanetriol was determined to be 1.7E-07 Pa at 25°C using a validated QSAR estimation method.

 

Ethanol has a reported vapour pressure of 7910 Pa at 25°C (Daubert, T E and Danner R P (1985))

 

Reference:

 

Daubert, T E and Danner R P (1985).Physical and Thermodynamic properties of Pure Chemicals. Data Compilation)