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EC number: 800-172-4
CAS number: 398141-87-2
The mean total peak areas relating to
the standard and sample solutions are shown in the following table:
Mean total Peak Areas
Standard 25.2 mg/l
8.569 x 105
7.694 x 105
4.595 x 105
4.428 x 105
Mean sample solution concentration = 5.00 x 10-2g/l
The matrix blank contained some peaks
within the retention range of the test item but were not subtracted as
they were probably in the standards and sample.
The readings, temperatures and the
corresponding calibration factors for glass double-distilled water are
shown in the following table:
Literature Value (mN/m)
Mean Calibration Factor = 1.000
The readings, times and temperatures
for the sample solution are shown in the following table:
reading : 46.5 mN/m
Surface tension = reading x calibration factor
= 46.5 x 1.000
= 46.5 mN/m
Temperature : 21.2 ± 0.5°C
pH of sample solution : 5.9
The linearity of the detector response
with respect to concentration was assessed over the nominal
concentration range of 5 to 50 mg/l. This was satisfactory with a
correlation coefficient (r2) of 0.991 being obtained.
surface tension was 46.5 mN/m at 21.2 ± 0.5°C for a 5.00 x 10-2 g/l
solution of test item, using a ring method based on ISO 304 designed to
be compatible with Method A5 Surface Tension of Commission Regulation
(EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines
for Testing of Chemicals, 27 July 1995. The
test item was considered to be surface-active.
The surface tension of the substance was determined to be 46.5 mN/m; study conducted in accordance with OECD 115 and EU Method A.5; Fox and White (2011)
In a GLP compliant surface tension study conducted in accordance with
standardised guidelines, the surface tension of the test substance was
determined. Under the conditions of the test, the surface tension of the
substance was determined to be 46.5 mN/m at 21.2 ± 0.5°C and
concentration of 50 mg/L.
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