N,N-dimethyldecylamine N-oxide

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

24 January 2012-16 May 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Surface tension:

>= 31.4 - <= 31.5 mN/m

Temp.:

21.5 °C

Conc.:

1.02 g/L

Conclusions:

C10 AO is surface active

Executive summary:

The surface tension of N,N-dimethyldecylamine N-oxide has been determined to be in the range 31.4 -31.5 mN/m at a concentration of 1.02 g/L at 21.5 +/-0.5 °C using a ring method designed to be compatible with Method A5 Surface Tension of Commission Regulation (EC) No 440/2008 and OECD TG 115. The substance is considered to be surface-active.

Description of key information

The surface tension is 31.4 -31.5 mN/m at 21.5 +/-0.5 °C

Key value for chemical safety assessment

Surface tension:

31.4

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

1 020

Additional information

The surface tension of the substance was measured in a test conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A5 (ring method) under GLP [Woolley AJ (2012 )]. Due to the high solubility of the substance, a concentration of 1.02 g/L was used. Measurements were made in duplicate. The derived value for surface tension was 31.4 -31.5 mN/m at 21.5 +/-0.5 °C. The substance is considered to be surface-active.