Ethylene bis[1,3-dihydro-1,3-dioxoisobenzofuran-5-carboxylate]

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental starting date: 15 December 2017 Experimental completion date: 19 December 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

GLP compliance:

yes (incl. QA statement)

Type of method:

effusion method: vapour pressure balance

Test material

Test material information

Constituent 1

Reference substance name:

Ethylene bis[1,3-dihydro-1,3-dioxoisobenzofuran-5-carboxylate]

EC Number:

217-062-1

EC Name:

Ethylene bis[1,3-dihydro-1,3-dioxoisobenzofuran-5-carboxylate]

Cas Number:

1732-96-3

Molecular formula:

C20H10O10

IUPAC Name:

2-(1,3-dioxo-1,3-dihydro-2-benzofuran-5-carbonyloxy)ethyl 1,3-dioxo-1,3-dihydro-2-benzofuran-5-carboxylate

impurity 1

Reference substance name:

Benzene-1,2,4-tricarboxylic acid 1,2-anhydride

EC Number:

209-008-0

EC Name:

Benzene-1,2,4-tricarboxylic acid 1,2-anhydride

Cas Number:

552-30-7

Molecular formula:

C9H4O5

IUPAC Name:

Benzene-1,2,4-tricarboxylic acid 1,2-anhydride

impurity 2

Reference substance name:

not assignable

IUPAC Name:

not assignable

Specific details on test material used for the study:

Identification: RIKACID TMEG-500
Identification (chemical name); Ethylene bis[1,3-dihydro-1,3-dioxoisobenzofuran-5-carboxylate]
CAS No: 1732-96-3
Appearance/Physical state: Cream colored powder
Batch: 5259
Purity: 81.1% TMEG
Expiry date: 24 April 2018
Storage conditions: Room temperature in the dark

Results and discussion

Vapour pressure

Temp.:

25 °C

Vapour pressure:

0.002 Pa

Any other information on results incl. tables

The test item did not change in appearance under the conditions used in the determination.

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 vapor pressure at 25 ºC.

Run 6 was chosen because the sample had been under vacuum for the longest period prior to this run and so degassing would have been the most complete. The reading at 113 ºC (386.15 K) was chosen because this is the data point which gives the highest estimated vapor 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 vapor pressure on a wide range of samples using the vapor pressure balance method. Extrapolation to 25 ºC gave a vapor pressure of 1.62 x 10^-3 Pa which has been taken as a maximum for this material.

The results may represent rounded values obtained by calculations based on the exact raw data.

Applicant's summary and conclusion

Conclusions:

The vapor pressure of the test item has been determined to be less than 1.7 x 10^-3 Pa at 25 ºC.

Executive summary:

The vapor pressure of RIKACID TMEG-500 has been determined to be less than 1.7 x 10^-3 Pa at 25 °C, using the vapor pressure balance method, designed to be compatible with Method A.4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.