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EC number: 500-465-4
CAS number: 160901-28-0
1 - 2.5 moles ethoxylated
Water calibration: Temp. = 24 °C,
σ = 0.997 g/cm3
Surface tension of purified water, mN/m
Arithmetic mean 71.1 mN/m, standard deviation 0.0 mN/m (theoretical
value: 72.0 mN/m →correction factor 1.0056)
First test solution
(c = 1005.0 mg/L), Temp. = 22 °C,
σ = 0.998 g/cm3, age of solution = 32
Surface tension of solution 1, mN/m
Arithmetic mean 32.6 mN/m, standard deviation 0.2 mN/m
Second test solution
(c = 1.005 mg/L), Temp. = 22 °C,
σ = 0.997 g/cm3, age of solution = 39
Surface tension of solution 2, mN/m
By adjusting the temperature setting of the tensiometer, differences in
the density of the liquid can be compensated automatically.
Arithmentic mean of two test solutions: 32.6 mN/m (+
Arithmetic mean corrected by calibration factor
determined via water calibration: 32.8 mN/m
The sample was dissolved in water and tempered at 20 °C. Then the
automatic measurement was initiated. The measurement was completed after
The surface tension was determined at a concentration of 1 g/L.
32.8 mN/m at 22 °C, concentration: 1 g/L
The surface tension was determined by the ring method according to EU
test method A.5. (similar to OECD 115).
The substance should be regarded as being surface active material.
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