Poly(oxy-1,2-ethanediyl), α,α'-(iminodi-2,1-ethanediyl)bis[.omega.-hydroxy-, N-[3-(C10-16-alkyloxy)propyl] derivs., di-Et sulfate-quaternized

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

no

GLP compliance:

no

Type of method:

ring method

Specific details on test material used for the study:

Name: Poly(oxy-1,2-ethanediyl), .alpha.,.alpha.'-(iminodi-2,1-ethanediyl)bis[.omega.-hydroxy-, N-[3-(C10-16-alkyloxy)propyl] derivs., di-Et sulfate-quaternized
Product Description: C10-16-alkyletherpropylamine, ethoxylated, DES Quat
CAS No.: 70983-58-3
Physical state: yellowish to amber viscous liquid at 20 °C
Batch No.: PFS-755-173
Re-certification date of batch: 19 April 2018
Purity: 100 % (UVCB)
Color, Gardner 8.8
pH, 5% in water 5.76
Acid Value , mg KOH/g 20.1
Moisture, % 0.127
Total Amine, mg/g 11.18
Viscosity,cps, #4@60,25C 3280
Appearance @25C pass
Stability: stable under test conditions
Storage condition of test material: Room temperature, protected from light

Key result

Surface tension:

29.9 mN/m

Temp.:

21 °C

Conc.:

1 009 mg/L

Water calibration:       

Temp. = 21 °C, rho  = 0.998 g/cm3

Arithmetic mean: 71.7 mN/m, standard deviation 0.2 mN/m from 6 measurements (theoretical value: 72.4 mN/m -> correction factor 1.0098).

First test solution:      

c = 1009 mg/l, Temp. = 21 °C, rho = 0.998 g/cm3, age of the solution: 2697 min

Table 1: Surface tension of the first test solution

Value 1	29.9 mN/m
Value 2	29.9 mN/m
Value 3	29.9 mN/m
Value 4	29.8 mN/m
Value 5	29.8 mN/m
Value 6	29.8 mN/m
Arithmetic mean	29.9 mN/m
Standard deviation	0.1 mN/m

Arithmetic mean 29.9 mN/m, standard deviation 0.1 mN/m from 6 measurements.

Table 2: Surface tension of the second test solution

Value 1	30.3 mN/m
Value 2	30.4 mN/m
Value 3	30.3 mN/m
Value 4	30.3 mN/m
Value 5	30.3 mN/m
Value 6	30.3 mN/m
Arithmetic mean	30.3 mN/m
Standard deviation	0.0 mN/m

Arithmetic mean 30.3 mN/m, standard deviation 0.0 mN/m from 6 measurements.

Calculation

Arithmetic mean of three test solutions: 30.1 mN/m (± 0.3 mN/m)

Arithmetic mean corrected by calibration factor determined via water calibration: 30.4 mN/m

Conclusions:

The test item has a surface tension of 30.4 mN/m (c=approx.1 g/l) in accordance with the test method A.5. "Surface Tension".

Executive summary:

The test item has a surface tension of 30.4 mN/m (c=approx. 1 g/l) in accordance with the test method A.5. "Surface Tension" as described in the Commission Regulation (EC) No 440/2008 of 30 May 2008 laying down test methods pursuant Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), also similar to OECD guideline for testing of chemicals OECD 115.

Description of key information

The test item has a surface tension of 30.4 mN/m (c=approx. 1 g/l) in accordance with the test method A.5. "Surface Tension" as described in the Commission Regulation (EC) No 440/2008 of 30 May 2008 laying down test methods pursuant Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), also similar to OECD guideline for testing of chemicals OECD 115.

Key value for chemical safety assessment

Surface tension:

30.4

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

1 000