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EC number: 931-338-5
CAS number: 90622-77-8
The CMC of the test material was found to be
13.6 mg/L and at 90% of this concentration, i.e., 12.2 mg/L, the surface
tension was determined to be 38.5 mN/m.
An analysis of variance test revealed that
there is no statistically significant difference (at P = 0.484) of the
mean values between pure water and water containing 0.1 – 0.5 mL/L of
methanol. It can therefore be assumed that a methanol content within
this range has no impact on the surface tension of the test solutions.
An OECD guideline 115 study was conducted to
determine the surface tension of amides, C8-18 and C18-unsatd.,
The critical micelle concentration (CMC) of
the test material was determined to be 13.6 mg/l.. This value of 13.6
mg/l was used as an approximation of the water solubility limit. At 90%
of the above estimated solubility limit (12.2 mg/l), using the
determined surface tension concentration dependence, the surface tension
was calculated to be 38.5 mN/m.
tension was determined according to OECD Guideline 115 (Lewandowska,
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