Pregna-1,4,6-triene-3,20-dione, 17-hydroxy-

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

other information

Study period:

2002

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

GLP compliance:

no

Type of method:

effusion method: vapour pressure balance

Key result

Test no.:

#1

Temp.:

25 °C

Vapour pressure:

< 0.001 Pa

Since the evaporation rate of the mixture was below the value derived from the lower limit of the vapor pressure range recommended for the use of a vapor pressure balance (10-3 Pa, EC Testing Guideline A.4) it can be assumed that the vapor pressure of the

mixture is lower than 10-3 Pa. Considering this fact, the vapor pressure of the single compounds in the mixture has also to be

lower than 10-3 Pa. Therefore, the vapor pressure of 1,4,6 -Trienol can be estimated to be at 25°C: < 10-3 Pa

Conclusions:

The vapour pressure of the substance is < 0.001 Pa at 25 °C.

Executive summary:

The vapour pressure of the substance is < 0.001 Pa at 25 °C determined using a screening method based on the detection of the evaporation rate from Knudsen cell vapor pressure balance.

Description of key information

The determined value for the vapour pressure of the substance was measured to be < 0.001 Pa, 25°C.

Key value for chemical safety assessment

Vapour pressure:

0.001 Pa

at the temperature of:

25 °C