1,3,5-tris(2,3-dibromopropyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

25 July 2022 to 26 July 2022

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

GLP compliance:

yes (incl. QA statement)

Type of method:

OECD harmonised ring method

Key result

Surface tension:

68.776 mN/m

Temp.:

20 °C

Conc.:

90 other: % saturation in distilled water

Triplicate samples of AP 729 were prepared for the analysis and the individual values observed were 68.986 mN/m, 69.234 mN/m and 69.192 mN/m for replicates R1, R2 and R3 respectively at 20.0ºC.

The observed values were corrected using the mean water calibration correction factor of 1.0019. The initially corrected mean surface tension of test item resulted to be 69.270 mN/m. 

This value was further corrected as per Harkins-Jordan table and the surface tension of test item was found to be 68.776 mN/m.

All details are provided in Table 2 below: 

Table 2 - DETERMINATION OF SURFACE TENSION OF TEST ITEM

Replication Number	Apparent Surface Tension of sample (mN/m) (20℃)	Mean water Calibration Correction Factor	Initially corrected Surface Tension (mN/m)	Mean of initially corrected Surface Tension (mN/m)	Corrected Surface Tension as per Harkins-Jordan table
1	68.986	1.0019	69.118	69.270	68.776
2	69.234	1.0019	69.367
3	69.192	1.0019	69.325

Conclusions:

The surface tension of a 90% saturation solution of AP 729 was found to be 68.776 mN/m at 20.0ºC.

Executive summary:

The surface tension of AP 729 was determined according to OECD Guideline 115 (OECD harmonized ring method).

The calibration of the interfacial tensiometer was performed using water. 

Since the solubility of the test item does not exceed 1 g/L, a 90% saturation solution was used for the analysis.
Triplicate samples were prepared and the individual values were measured at 20ºC. The observed values were corrected with the mean water calibration correction factor and the corrected mean surface tension of test item resulted to be 69.270 mN/m.
This value was further corrected as per Harkins-Jordan table and the surface tension of test item was found to be 68.776 mN/m.

Description of key information

The surface tension of AP 729 was determined according to OECD Guideline 115 (OECD harmonized ring method).

Since the solubility of the test item does not exceed 1 g/L, a 90% saturation solution was used for the analysis.
Triplicate samples were prepared and the individual values were measured at 20ºC. 
The corrected mean surface tension value was further corrected as per Harkins-Jordan table: the surface tension of test item was found to be 68.776 mN/m.

Key value for chemical safety assessment

Surface tension:

68.776