Reaction mass of (S)-2-[(R)-2-Oxo-4-propyl-1-pyrrolidinyl]butyramide and (S)-2-[(S)-2-Oxo-4-propyl-1-pyrrolidinyl]butyramide

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

24 Dec 2018 - 15 Feb 2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2019

Report date:

2019

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

2016

Deviations:

no

Test guideline 2

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

Test material

Test material information

Constituent 1

Reference substance name:

Reaction mass of (S)-2-[(R)-2-Oxo-4-propyl-1-pyrrolidinyl]butyramide and (S)-2-[(S)-2-Oxo-4-propyl-1-pyrrolidinyl]butyramide

Cas Number:

943986-70-7

Molecular formula:

C11H20N2O2

IUPAC Name:

Reaction mass of (S)-2-[(R)-2-Oxo-4-propyl-1-pyrrolidinyl]butyramide and (S)-2-[(S)-2-Oxo-4-propyl-1-pyrrolidinyl]butyramide

Test material form:

solid

Details on test material:

- Appearance: Off-white solid
- Storage condition of test material: At room temperature protected from light

Results and discussion

Surface tension

Key result

Surface tension:

61.61 mN/m

Temp.:

20 °C

Conc.:

1 g/L

Any other information on results incl. tables

Table: Surface tension measurements

Measurement	Time passed after measurement start [seconds]	Surface tension (mN/m)
		individual (Harkins-Jordan corrected value)	mean
1	41.81	61.69	61.61
2	67.61	61.63
3	93.82	61.60
4	120.06	61.56
5	146.52	61.54

Applicant's summary and conclusion

Conclusions:

The surface tension of an aqueous substance solution at 1 g/L was determined to be 61.61 mN/m (at 20°C).

Executive summary:

The OECD harmonized ring method was used in a GLP study based on EC A.5 and OECD 115. The surface tension of an aqueous substance solution at 1 g/L was determined to be 61.61 mN/m (at 20°C). According to EC A.5 the substance is not surface active.