Exo-1,7,7-trimethylbicyclo[2.2.1]hept-2-yl acrylate

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental starting date: August 09, 2021 - Experimental completion date: August 10, 2021

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

OECD 115, GLP.

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

European Commission Regulation (EC) No. 440/2008

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

OECD harmonised ring method

Specific details on test material used for the study:

TEST MATERIAL:
- Name of test material: VISIOMER IBOA TG
- Chemical name: Isobornyl acrylate
- CAS: 5888-33-5
- Appearance: Clear colourless liquid
- Storage conditions: Ambient temperature (10 °C to 30 °C), dark

Key result

Surface tension:

69.6 mN/m

Temp.:

20 °C

Remarks on result:

other: As the surface tension was higher than 60 mN/m, the test item had no surface-active properties.

The test item had a water solubility 19.8 mg/L (20 °C, OECD 105). Therefore, 20.1 mg of the test item were filled up to 1000 ml with demineralized water and stirred at ambient temperature for approx. 21 h. Very small phase drops could be observed after the stirring period. So, the test item was not completely solved, and the solution was centrifuged for 30 min at 20 °C (15 000 rpm). Subsequently an aliquot was taken from the clear colourless aqueous phase and diluted to 90 %. After adapting to 20 °C the measurement of the surface tension with the test item was carried out at 20 ±0.5°C (20.5 °C), as follows:

The solution to be measured was transferred to the measurement vessel, taking care to avoid foaming. The measurement vessel was placed on the table of the test apparatus. The measurement vessel was raised until the ring was immersed below the surface of the solution. The time from starting the measurement was recorded (see Table1 below). Subsequently, the table top was lowered gradually and evenly at a rate of 0.3 cm/min to detach the ring from the surface until the maximum force was reached. The force was read on the tensiometer. The measurements were repeated until 6 measurements were within the limits of the stability criterion.

 

Table1: Surface tension

Measurement	1	2	3	4	5	6
Time (s)	393	515	636	758	880	1001
σ(mN/m) uncorrected	75.24	75.15	75.02	75.11	75.00	75.02
σ(mN/m) corrected according to Zuidema and Waters[1]	69.72	69.64	69.51	69.59	69.49	69.51

Mean value:   σ= 69.6 mN/m (corrected according to Zuidema and Waters¹)

[1]Zuidema, H., Waters, C.W.,Ind. Eng.Chem. Analyt.13 (1941), S. 312

Conclusions:

In a valid guideline study the surface tension of the test item IBOA was determined to be 69.6 mN/m at 20°C according to OECD 115 and EU Method A.5 (Surface Tension).

Considering that distilled water has a surface tension of 72.75 mN/m at 20 °C and the test item showed a surface tension above 60 mN/m under the conditions of this referring method, the test item should be regarded as being not surface-active material.

Executive summary:

In a valid guideline study the surface tension of the test item IBOA was determined to be 69.6 mN/m at 20°C according to OECD 115 and EU Method A.5 (Surface Tension).

Considering that distilled water has a surface tension of 72.75 mN/m at 20 °C and the test item showed a surface tension above 60 mN/m under the conditions of this referring method, the test item should be regarded as being not surface-active material.

NOTE: Any of data in this dataset are disseminated by the European Union on a right-to-know basis and this is not a publication in the same sense as a book or an article in a journal. The right of ownership in any part of this information is reserved by the data owner(s). The use of this information for any other, e.g. commercial purpose is strictly reserved to the data owners and those persons or legal entities having paid the respective access fee for the intended purpose.

Description of key information

In a valid guideline study the surface tension of the test item IBOA was determined to be 69.6 mN/m at 20°C according to OECD 115 and EU Method A.5 (Surface Tension). (Acrylate REACH Task Force (ARTF), 2021)

Considering that distilled water has a surface tension of 72.75 mN/m at 20 °C and the test item showed a surface tension above 60 mN/m under the conditions of this referring method, the test item should be regarded as being not surface-active material.

Key value for chemical safety assessment

Surface tension:

69.6