Amines, C12-18-alkyldimethyl

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Justification for type of information:

For details on endpoint-specific justification, please see read-across justification document (analogue approach) in section 13.

Reason / purpose for cross-reference:

read-across source

Reason / purpose for cross-reference:

assessment report

Key result

Surface tension:

30.5 mN/m

Temp.:

25 °C

Conc.:

1 g/L

Individual results of duplicate measurements were:

#1       30.76 ± 0.07 mN/m.

#2       30.34 ± 0.04 mN/m

Taking into account the different values and their nominal uncertainty, the uncertainty of the mean value (30.5 mN/m) is estimated as 0.3 mN/m.

Executive summary:

The study used as source investigated the surface tension of C12-18-DMA hydrochloride (C12-18-DMA HCl). The study results of the source substance were considered applicable to the target substance. Justification and applicability of the read-across approach (structural analogue) is outlined in the read-across report in section 13.

Description of key information

The surface tension of a 1 g/L aqueous solution of C12-18-DMA hydrochloride is 30.5 ± 0.3 mN/m at 25 °C.

Key value for chemical safety assessment

Surface tension:

30.5

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

1 000

Additional information

The surface tension of a 1 g/L aqueous solution of the structural analogue C12-18-DMA hydrochloride was determined according to the OECD Guideline 115 using the plate method. At 25 °C, the surface tension is 30.5 ± 0.3 mN/m. The study results of the source substance were considered applicable to the target substance. Justification and applicability of the read-across approach (structural analogue) is outlined in the read-across report in section 13.