2,20:3,19-Dimethano-2,3,4a,5a,6a,7a,8a,9a,10a,11a, 12a,13a,14a,15a,16a,17a,19 ,20,21a,22a,23a,24a,25a,26a,27a,28a,29a,30a,31a,32a,33a,34a-dotriacontaazabispentaleno [1''',6''':5'',6'',7''] cycloocta[1'',2'',3'':3'',4'']pentaleno[1'',6'':5',6',7']cycloocta[1',2',3':3',4']pentaleno[1',6':5,6,7]cycloocta[1,2,3-gh:1',2',3'-g'h']cycloocta[1,2,3-cd:5,6,7-c'd']dipentalene-1,4,6,8,10,12,14,16,18,21,23,25,27,29,31,33-hexadecone, hexadecahydro-, stereoisomer,2,18:3,17-Dimethano-2,3, ,4a,5a,6a,7a,8a,9a,10a,11a,12a,13a,14a,15a,17,18,19a, 20a,21a,22a,23a,24a, 25a,26a,27a,28a,29a,30a-octacosaazabispentaleno[1''',6''':5'',6'',7'']cycloocta [1'',2'',3'':3'',4''] pentaleno[1'',6'':5',6',7']cycloocta[1',2',3':3',4']pentaleno[1',6':5,6,7]cycloocta[1,2,3-cd:1',2',3'-gh]pentalene-1,4,6,8,10,12,14,16,19,21,23,25,27,29-tetradecone, tetradecahydro-, stereoisomer, 1H,4H,12H,15H-2,14:3,13-Dimethano-5H,6H,7H,8H,9H,10H,11H,16H,17H,18H,19H,20H,21H,22H-2,3,4a,5a,6a,7a,8a,9a,10a,11a,13,14,15a,16a,17a,18a,19a,20a,21a,22a-eicosaazabispentaleno [1'',6'':5',6',7']cycloocta[1',2',3':3',4']pentaleno[1',6':5,6,7]cycloocta[1,2,3-cd:1',2',3'-gh]pentalene-1,4,6,8,10,12,15,17,19,21-decone, decahydro-, stereoisomer

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11'/2019

Reliability:

1 (reliable without restriction)

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

not applicable

Principles of method if other than guideline:

The surface tension of the substance was determined by the Wilhelmy plate method, equivalent or similar to OECD 115.

GLP compliance:

no

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Type of method:

plate method

Key result

Surface tension:

72.75 mN/m

Temp.:

20 °C

Conc.:

500 mg/L

Table: Surface Tension Measurement Data

 

	Surface tension [mN/m]
Sample	#	0.05%	#	0.5%
	1	72.75	1	72.93
	2	72.74	2	72.60
	3	72.76	3	72.27
	Mean value	72.75		72.60
	Std. dev.	0.01		0.33

 

There is no significant difference between the surface tension values of the 0.50% solution and the 0.05% solution

Conclusions:

The substance is not surface active.

Executive summary:

The objective of the study was to evaluate the surface tension of two aqueous solutions of the substance (0.05 and 0.5% w/w) using the Wilhelmy plate method. Mean surface tension values of the 0.50% and the 0.05% solution were 72.60 and 72.75 mN/m. Hence, the substance has no surface activity.

Description of key information

The substance did not have surfactant properties when tested at two concentrations (500 and 5000 mg/L) with the plate method. The results are consistent with those of CB[8], which had a surface tension of 72.7 mN/m in a GLP study using the ring method in accordance with OECD guideline 115 and EU method A5.

Key value for chemical safety assessment

Surface tension:

72.7

in mN/m at 20°C and concentration in mg/L:

500