Reaction products of 4-alkylalkanol and diphosphorus pentaoxide with 2-ethylhexylamine

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 start date: 12 January 2016 Experimental completion date: 25 March 2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

The determination was carried out by a ring method, using a procedure designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for the Testing of Chemicals,
27 July 1995.

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Key result

Surface tension:

40 mN/m

Temp.:

21.8 °C

Conc.:

1 g/L

Remarks on result:

other: The mean surface tension of a duplicate solutions prepared at nominally 1 g/L solutions of test item in water has been determined to be 40.0 mN/m at 21.8 ± 0.5 °C. The test item was considered to be surface-active.

The readings, times and temperatures for the sample solutions are shown in the following tables:

 

Table 9 - Sample 1

 

Time (mins)	Reading (mN/m)	Temperature (°C)
90	40.0	21.8
101	40.0	21.8
112	40.0	21.8
123	40.0	21.8
134	40.0	21.8

Table 10 - Sample 2

 

Time (mins)	Reading (mN/m)	Temperature (°C)
166	40.0	21.8
177	40.0	21.8
188	40.0	21.8
199	40.0	21.8
210	40.0	21.8

 

Mean Sample 1 result	40.0 mN/m	pH of Sample 1 :	3.8
Mean Sample 2 result	40.0 mN/m	pH of Sample 2 :	3.7

 

Mean result:           40.0mN/m

Overall temperature:      21.8 ± 0.5 ºC

Conclusions:

The mean surface tension of a duplicate solutions prepared at nominally 1 g/L solutions of test item in water has been determined to be 40.0 mN/m at 21.8 ± 0.5 °C. The test item was considered to be surface-active.

Executive summary:

Surface Tension. 40.0 mN/m (1 g/L solution) at 21.8 ± 0.5 °C, using a ring method, designed to be compatible with Method A5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be surface-active.

Description of key information

The mean surface tension of a duplicate solutions prepared at nominally 1 g/L solutions of test item in water has been determined to be 40.0 mN/m at 21.8 ± 0.5 °C. The test item was considered to be surface-active.

Key value for chemical safety assessment

Surface tension:

40

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

1 000

Additional information

The mean surface tension of a duplicate solutions prepared at nominally 1 g/L solutions of test item in water has been determined to be 40.0 mN/m at 21.8 ± 0.5 °C. The test item was considered to be surface-active.