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EC number: 608-369-5
CAS number: 29514-94-1
Preliminary test :
The content of test item dissolved in the water sample was below the
limit of detection <0.018 mg/l
No test substance was detected in the pretreated sample from the blank
Despite all the precautions taken to avoid the loss of the test
substance (avoiding headspace in the flask as much as possible, adding
the test substance through the septum avoiding turbulent mixing of the
two phases, aqueous sample pipetted directed into an organic solvent), a
volatilisation of the test item has occurred. Therefore, the measured
concentration of the test substance in water could be affected by this
The magnitude of this effect is unknown, so the water solubility was
given as an estimated range of 0.005 to 0.01 g/l at 19.9°C.
water solubility study of the test item was carried out with the slow
stirring method according to recognized guidelines (EU A.6 method and
OECD 105) and under GLP.
SULFONYL VINYL ETHER PERFLUORURATE is a volatile liquid (vapour pressure
of 12 kPa at 20°C) and it possesses a limited solubility in water. As
consequence of its properties an evaporation of the test item was
observed from aqueous samples during the development of the analytical
method. As a result, very low accuracy and recovery results ( < 18%, 21%
at the two evaluated concentrations) were obtained from aqueous test
item solutions and it was not possible to fulfill the validation
criteria of the analytical method. Because of the substance properties
it was considered not possible to improve the performance of the method.
the water solubility studies all possible precautions [avoiding
headspace in the container as much as possible, adding test item through
the septum avoiding turbulent mixing of the two phases; stirring gently
at 100 rpm; samples pipetted directly into dichloromethane] were taken
to prevent loss of test item due to evaporation during the study.
of this, the magnitude of the error on
the analytical measurements due to volatilization of the test item from
water samples is unknown because
no measure of the accuracy of the analytical method is available.
a deviation from the requirement of
OECD guideline 105 was observed during the study. Indeed, the obtained
results differ by more than 15%. This high variation in the results, is
considered to be due to the test item properties (volatile liquid with
limited water solubility).
of the unkown accuracy on the measurements and the observed deviation to
the OECD guideline No. 105 the water solubility is given as an estimated
estimated range is between 0.005 to 0.01 g/l at 19.9°C.
substance is observed to be poorly soluble in water but the exact water
solubility value is unkown.
reliable measurement of the water solubility of SULFONYL VINYL ETHER
PERFLUORURATE is available
due to the lack of a reliable validated analytical method.
impossibility of establishing a reliable validated method is due to the
test item properties (volatile liquid with limited water solubility).
to the substance properties (high volatility, low water solubility) no
validated analytical method for the measurement of PFSVE in water is
the water solubility study of the test item was carried out with
according to recognized guidelines (EU A.6 method and OECD 105) and
under GLP. All the possible precautions to prevent loss of test item due
to volatilization during the experimental and the analytical phases were
to the lack of validation, the accuracy of the analytical measurements
obtained in the water solubility study is unknown.
concentrations in the different samples from the main study differed
more than 15% resulting in a deviation from
the requirements of OECD guideline No. 105.
on the the above, the results of this test are considered not reliable.
to substance properties more accurate results were not expected.
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