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

Density

Administrative data

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental starting date: 26 October 2017 Experimental completion date: 07 March 2018

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 109 (Density of Liquids and Solids)

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

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
CAS No.: 1732-96-3
Chemical name: Ethylene bis[1,3-dihydro-1,3-dioxoisobenzofuran-5-carboxylate]
Appearance/physical state: cream colored powder
Batch: 5259
Purity: 81.1%
Expiry date: 24 April 2018
Storage conditions: room temperature, in the dark

Results and discussion

Density

Density 1

Type:

density

Density:

1 520 kg/m³

Temp.:

20 °C

Density 2

Type:

relative density

Density:

1.52 other: no dimensions

Temp.:

20 °C

Any other information on results incl. tables

Calibration

The pressure readings and the calculated volume for the reference and sample cells are shown in the following table:

Determination	P1 (psig)	P2 (psig)	P3 (psig)	P4 (psig)	Reference Cell Volume (cm^3)	Sample Cell Volume (cm^3)
1	17.469	6.614	17.342	8.592	90.810	149.039
2	17.598	6.665	17.417	8.632	90.838	149.007
3	17.260	6.537	17.438	8.644	90.785	148.919

Mean reference cell volume: 90.811 cm³
Mean sample cell volume: 148.988 cm³

As the reference cell volume and sample cell volume were within the defined tolerance (90.953 ± 1.0 cm³and 149.225 ± 1.0 cm³for the reference and sample cell volumes respectively) the gas comparison pycnometer was therefore considered acceptable for use.

Sample

The pressure readings, calculated volumes and density values obtained for the test item are shown in the following table:

 

Determination	Test	P1(sample) (psig)	P2(sample) (psig)	Volume (cm^3)	Density (kg/m^3)	Mean Density (kg/m^3)
1	A	17.223	7.728	37.414[1]	not applicable	1.52 x 10^3
	B	17.238	7.750	37.812	1.52 x 10^3
	C	17.204	7.732	37.741	1.52 x 10^3
2	A	17.177	7.540	32.921^*	not applicable	1.52 x 10^3
	B	17.277	7.598	33.305	1.52 x 10^3
	C	17.482	7.688	33.301	1.52 x 10^3

Mean density: 1.52 x 10³ kg/m³
Relative density: 1.52
Temperature:  20.0 ± 0.5 °C

Discussion

On calibration of the instrument, a single set of readings resulted in calculated reference and sample cell volumes which were out of the defined acceptable tolerance. On statistical evaluation, these readings were identified as statistically significant outliers (Grubbs’ test, P = 0.05) and thus excluded from the calculation process. This was considered not to impact on the validity of the determination, as they could be dismissed as atypical, with the remaining, retained values resulting in accurate and repeatable calibration values.

On evaluation of the test item, a moderately elevated apparent volume was achieved for the first reading of each determination. This was attributed to incomplete gas penetration/exchange in the samples, such that the first pressurization and depressurization essentially purged the sample with helium. For this reason, the sample volumes from reading B and C only have been used in the calculation of the test item density.

Applicant's summary and conclusion

Conclusions:

The density of the test item was determined to be 1.52 x 103 kg/m3 at 20.0 ± 0.5 °C; relative density: 1.52.

Executive summary:

Density. 1.52 x 10³ kg/m³at 20.0 ± 0.5 °C; relative density: 1.52,determined using a gas comparison pycnometer procedure designed to be compatible with Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012.