complex reaction mass of Chinese gum rosin post reacted with acrylic acid

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP - Guideline study.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1999

Report date:

1999

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

effusion method: vapour pressure balance

Test material

Reference

Name:

Unnamed

Type:

Constituent

Details on test material:

Sponsors identification: ARAKAWA KE-604
Description: pale yellow blocks
Batch No.: R61132
Purity: no data

Results and discussion

Vapour pressure

Temp.:

ca. 25 °C

Vapour pressure:

< 0 Pa

Any other information on results incl. tables

No statistical analyses were preformed since the balance readings were too low and variable for a line of best fit to have any meaning. Instead a regression slope was imposed on the chosen data point to provide and estimate of the maximum value of vapour pressure at 25°C.

Run 4 was chosen because the sample had been under the vacuum for the longest period prior to this run and so degassing would have to been most complete. The reading at 88°C was chosen as 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.

Applicant's summary and conclusion

Executive summary:

The vapour pressure of Arakawa KE-604 has been determined to be less than 8.9 x 10^-5 Pa at 25°C.