Pyrolytic sugar

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Nov 2020

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:

2020

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

July 1995

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

May 2008

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

OECD harmonised ring method

Test material

Test material information

Constituent 1

Reference substance name:

1,6-anhydro-β-D-glucose

EC Number:

207-855-0

EC Name:

1,6-anhydro-β-D-glucose

Cas Number:

498-07-7

Molecular formula:

C6H10O5

IUPAC Name:

(1R,2S,3S,4R,5R)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triol

Constituent 2

Reference substance name:

Glycollaldehyde

EC Number:

205-484-9

EC Name:

Glycollaldehyde

Cas Number:

141-46-8

Molecular formula:

C2H4O2

IUPAC Name:

2-hydroxyacetaldehyde

Constituent 3

Reference substance name:

Organic acids

IUPAC Name:

Organic acids

Constituent 4

Reference substance name:

Ketones

IUPAC Name:

Ketones

Constituent 5

Reference substance name:

Phenols

IUPAC Name:

Phenols

Constituent 6

Reference substance name:

Water

EC Number:

231-791-2

EC Name:

Water

Cas Number:

7732-18-5

Molecular formula:

H2O

IUPAC Name:

water

Constituent 7

Reference substance name:

Oligomers of sugars and anhydrosugars

IUPAC Name:

Oligomers of sugars and anhydrosugars

Test material form:

liquid: viscous

Results and discussion

Surface tension

Key result

Surface tension:

>= 54.91 - <= 57.43 mN/m

Temp.:

20 °C

Conc.:

1 g/L

Remarks on result:

other: As the determined surface tension was lower than 60 mN/m, the test item can be classified as surface active.

Any other information on results incl. tables

Measured Values Test Item First Series

Measurement- First Series-test item	Time	Mass	Surface Tension	Temperature
No.	s	g	mN/m	°C
1	4,2	0,2354	57,43	20,2
2	5,1	0,2339	57,06	20,2
3	6,1	0,2338	57,03	20,2
4	7,1	0,2336	56,99	20,2
5	8,1	0,2338	57,03	20,2
6	9,1	0,2331	56,86	20,2
7	10,1	0,2333	56,91	20,2
8	11,1	0,2332	56,89	20,2
9	12,1	0,2331	56,86	20,2
10	13,1	0,2332	56,89	20,2
Mean			57,00
Standard deviation			0,17
Measured Values Test Item Second Series
Measurement	Time	Mass	Surface Tension	Temperature
No.	s	g	mN/m	°C
1	4,2	0,2354	55,40	20,3
2	5,1	0,2339	55,03	20,3
3	6,2	0,2338	54,99	20,3
4	7,1	0,2336	54,96	20,3
5	8,2	0,2338	54,94	20,3
6	9,1	0,2331	54,91	20,3
7	10,1	0,2333	54,94	20,3
8	11,1	0,2332	54,91	20,3
9	12,2	0,2331	54,94	20,3
10	13,1	0,2332	54,91	20,3
Mean			54,99
Standard deviation			0,15

After the first and second measurement series, the difference between the mean values was less then 5% (3,53%), therfoere no additional measurement series were required.

Applicant's summary and conclusion

Conclusions:

As the determined surface tension of test item was lower than 60 mN/m (between 54.91 and 57.43 mN/m), the test item can be classified as surface active.

Executive summary:

The surface tension of the aqueous solution of the test item was determined according to OECD 115 resp. EU A.5.

The surface tension was determined as 57.00 +/- 0.17mM/m at 20.0 +/- 0.3°C in a concentration of 1 g/L. One measurement was performed for verification and no significant changes and no significant dependance on time were observed.

The substance is considered as surface active as the obtained result is <60mM/m.