Íomhá:Crystals of dimethyl sulfoxide-d6 with a different purity degree.jpg

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English: Dimethyl sulfoxide in which all isotopes of hydrogen 1H (Protium) are replaced by 2H (Deuterium), is used for the analysis of substances by the NMR method. This substance has a melting point of 20 degrees Celsius and crystallizes from a liquid state just in a cold room. Crystallization begins at the glass surface because of releasing of heat from there to the environment. During the crystallization process of the impurity solution, the purest colorless dimethyl sulfoxide crystallizes first. In the center of the flask, a liquid solution of a pink-colored impurity is concentrated, which also crystallizes.
Русский: Диметилсульфоксид, в котором все изотопы водорода 1H (протий) заменены на 2Н (дейтерий), применяется для анализа веществ методом ЯМР. Данное вещество имеет температуру плавления 20 градусов Цельсия и кристаллизуется из жидкого состояния просто в холодной комнате. Кристаллизация начинается у поверхности стекла потому что оттуда происходит отвод (утечка) тепла в окружающую среду. При кристаллизации раствора примесного вещества прежде всего кристаллизуется наиболее чистый диметилсульфоксид, не имеющий окраски. В центральной части колбы концентрируется жидкий раствор примеси, окрашенной в розовый цвет, который также кристаллизуется.
English: Dimethyl sulfoxide in which all isotopes of hydrogen 1H (Protium) are replaced by 2H (Deuterium), is used for the analysis of substances by the NMR method. This substance has a melting point of 20 degrees Celsius and crystallizes from a liquid state just in a cold room. Crystallization begins at the glass surface because of releasing of heat from there to the environment. During the crystallization process of the impurity solution, the purest colorless dimethyl sulfoxide crystallizes first. In the center of the flask, a liquid solution of a pink-colored impurity is concentrated, which also crystallizes.
Dáta
Foinse Obair féin
Údar Ryabitskii

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The inner layer of crystalline dimethyl sulfoxide-d6 contains an impurity painted in pink colour.

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15 Nollaig 2021

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