Reaction mass of 7539-04-0 and pentaerythritol tetrakis(3-mercaptopropionate) and 2-{3-(3-mercaptopropionyl)thiopropionyl}oxymethyl-2-(3-mercaptopropionyl)oxymethyl-1,3-propanediyl bis(3-mercaptopropionate)

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 01 July 2015 to 26 July 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:

2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

1995

Deviations:

no

GLP compliance:

yes

Type of method:

OECD harmonised ring method

Key result

Surface tension:

65.8 mN/m

Temp.:

20 °C

Remarks on result:

other: Conc.= 90% of saturation

Table: Surface tension measurements

 

Measurement	Time passed after transfer test solution to test vessel [minutes]	Surface tension [mN/m]
		individual	mean (1)	mean multiplied by Φb and Harkins-Jordan corrected value
1	17	64.7
2	18	64.5	64.4	65.8
3	19	64.2
4	20	64.4
5	21	64.4
6	22	64.3

(1) Mean calculated from measurements 2 to 6. 

Conclusions:

The surface tension at 20°C of a 90% saturated aqueous solution of PEMP product was determined to be 65.8 mN/m.

Executive summary:

Using the OECD harmonized ring method in a GLP study according to EC A.5 and OECD 115, the surface tension at 20°C of a 90% saturated aqueous solution of PEMP product was determined to be 65.8 mN/m. According to the EC A.5 guideline the substance is not surface active.

Description of key information

 Surface tension at 20°C: 65.8 mN/m (EC A.5, OECD 115: OECD harmonised ring method)

Key value for chemical safety assessment

Surface tension:

65.8

Additional information

 Tested concentration: 90% of the saturation concentration.