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EC number: 222-359-4
CAS number: 3445-11-2
1-2-hydroxyethylpyrrolidin-2-one is miscible with water at room temperature (T = 23°C) and at T = 20.0°C ± 0.5°C in any ratio.
A GLP study was conducted. The water
solubility of substances with an expected high solubility is normally
determined according to flask method described in OECD Guideline for the
Testing of Chemieals 105. To apply this method, the preparation of a
saturated solution of test item in water is required. Since this is not
possible for this test item, a homemade method described in the External
method EM/00408/01 from Competence Center Analytics, BASF SE (chapter 4:
visual method) was applied to investigate complete miscibility. The GLP
study determined that 1-2-hydroxyethylpyrrolidin-2-one is miscible with
water at room temperature (T = 23°C) and at T = 20.0°C ± 0.5°C in any
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