5-[(2-hydroxyethyl)amino]-o-cresol

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 2017-09-06 to 2017-11-02

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

other: DIN EN 14370 Bestimmung der Oberflächenspannung; Novem-ber 2004

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Test material

Test material information

Constituent 1

Reference substance name:

5-[(2-hydroxyethyl)amino]-o-cresol

EC Number:

259-583-7

EC Name:

5-[(2-hydroxyethyl)amino]-o-cresol

Cas Number:

55302-96-0

Molecular formula:

C9H13NO2

IUPAC Name:

5-[(2-hydroxyethyl)amino]-2-methylphenol

Test material form:

solid: particulate/powder

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: 1-I00931
- Expiration date of the lot/batch: 2019-02-01
- Purity test date: 2017-02-03

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At 20 °C ± 5 °C, in the dark (Stored in tightly closed containers in cool, dry, well-ventilated area)
- Stability under test conditions: not reported

TREATMENT OF TEST MATERIAL PRIOR TO TESTING no

Results and discussion

Surface tension

Key result

Surface tension:

71.9 mN/m

Temp.:

20 °C

Conc.:

1 g/L

Any other information on results incl. tables

Surface Tension of Water: 72.8 mN/m at 20 °C ± 0.5 °C

Calibration Factor: The calibration factor was calculated to be: 72.8 mN/m73.1 mN/m=0.996

Remark: The test item which lowers the surface tension of the medium in which it is dissolved, and/or the interfacial tension with other phases, and, accordingly, is positively adsorbed at the liquid/vapour and/or at other interfaces - is a surface active test item.

Measured Surface Tension of the Test Item

Measurement n°  Time expired (min)  Temperature (°C)  Surface tension measured (mN/m)  Suface tension corrected 1 (mN/m) Surface tension corrected 2 (mN/m)   1  0  20.5  72.2      2  15  20.0  72.2      3  30  19.5  72.4      4  45  19.5  72.3      5  60  19.5  72.2          mean value (n=5) 72.3   72.0  71.9 1: corrected for the calibration factor (water): factor: 0.996 2: corrected by Harkins-Jordan-regression (y=0.7232*xE+1.0756)

Applicant's summary and conclusion

Conclusions:

The surface tension of an aqueous solution of the test item (1 g/L) was determined to be: 71.9 mN/m at 20 °C ± 0.5 °C.

Executive summary:

The purpose of the study was to determine the surface tension of an aqueous solution of the test item (1 g/L) by means of a ring tensiometer according to OECD 115 guideline and A.5 method following GLP. The surface tension of an aqueous solution of the test item (1 g/L) was determined to be: 71.9 mN/m at 20 °C ± 0.5 °C.