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

Surface tension

Administrative data

Endpoint:

surface tension

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 115 (Surface Tension of Aqueous Solutions)

GLP compliance:

yes (incl. QA statement)

Type of method:

ring 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

Surface tension

Surface tension:

56.1 mN/m

Temp.:

20 °C

Conc.:

90 other: % saturation concentration

Any other information on results incl. tables

The readings, times and temperatures for the sample solutions are shown in the following tables:

Sample 1

Time (mins)	Reading (mN/m)	Temperature (°C)
76	58.5	20.4
87	56.5	20.4
120	58.0	20.4
129	56.0	20.4
139	56.5	20.4
150	56.0	20.4
162	56.0	20.4
174	56.0	20.4

Sample 2

Time (mins)	Reading (mN/m)	Temperature (°C)
193	52.0	20.4
203	54.5	20.4
214	56.0	20.4
224	56.0	20.4
234	56.0	20.4
243	56.5	20.4
252	56.0	20.4

Mean Sample 1 result:          56.1 mN/m[1]                pH of Sample 1 :        3.0

Mean Sample 2 result:          56.1 mN/m^*                pH of Sample 2 :        3.0

Mean result                :          56.1 mN/m

Overall temperature   :          20.0 ± 0.5 ºC

[1]Final five sample solution surface tension readings considered to be on a stable plateau and therefore used in the calculation of the mean.

Discussion

According to criteria mentioned in EC Method A.5, substances showing a surface tension lower than 60 mN/m under the conditions of this method should be regarded as being surface active.

Based on the observed reactivity of the test item with water, the dissolved content within the sample solutions was attributed to hydrolysis products and not the parent test item.

Applicant's summary and conclusion

Conclusions:

The mean surface tension of duplicate aqueous solutions of test item prepared at a 90 % saturation concentration has been determined to be 56.1 mN/m at 20.0 ± 0.5 °C. The test item was considered to be surface-active. Based on the observed reactivity of the test item with water, the dissolved content within the sample solutions was attributed to hydrolysis products and not the parent test item.

Executive summary:

Surface Tension. 56.1mN/m at 20.0 ± 0.5 °C (mean value from duplicate aqueous solutions prepared at a 90% saturation concentration). Testing was performedusing a ring method designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be surface-active. Based on the observed reactivity of the test item with water, the dissolved content within the sample solutions was attributed to hydrolysis products and not the parent test item.