reaction product of cocoalkyldiethanolamides and cocoalkylmonoglycerides and molybdenumtrioxide (1.75-2.2: 0.75-1.0:0.1-1.1)

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

3 March 1997 - 10 April 1997

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: vapour pressure balance

Specific details on test material used for the study:

Name: Molyvan® 855 (Oil-Free)
Description: Dark brown paste
Storage conditions: Room temperature in the dark

Temp.:

25 °C

Vapour pressure:

<= 0 Pa

No statistical analyses were performed because the balance readings were too low and variable for a line of best fit to have any meaning. Instead it was considered more appropriate to impose a regression slope on a chosen data point to provide an estimate of the maximum value for the vapour pressure at 25 deg. C.

Run 3 was chosen because the sample had been under vacuum for the longest period prior to this run so degassing would have been most complete. The reading at 85 deg. C (358.15K) was chosen because this is the data point which gives the highest estimated vapour pressure at any given temperature when a slope of -1500 K is imposed upon it.

The value of -1500 K is an in-house value and is the shallowest slope observed whilst determining the vapour pressure on a wide range of samples using the vapour pressure balance method. Extrapolation to 25 deg. C gave a vapour pressure of 4.127x10^-4 Pa which has been taken as a maximum value for the test item.

The test material did not change in appearance under the conditions used in determination, however it did dry out.

Conclusions:

The vapour pressure of the test item has been determined to be less than 4.2E-04 Pa at 25 deg. C.

Executive summary:

In an EU Method A.4 109 study, conducted according to GLP, the vapour pressure of the test item is less than 4.2E-04 Pa at 25 deg.C (SafePharm Laboratories Limited, 1997)

Description of key information

The vapour pressure of the test item has been determined to be less than 4.2E-04 Pa at 25 deg C.

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

25 °C

Additional information

In an EU Method A.4 109 study, conducted according to GLP, the vapour pressure of the test item is less than 4.2E-04 Pa at 25 deg.C (SafePharm Laboratories Limited, 1997).