File:Crystals of dimethyl sulfoxide-d6 with a different purity degree.jpg
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Captions
Captions
The inner layer of crystalline dimethyl sulfoxide-d6 contains an impurity painted in pink colour.
Summary
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| Description |
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. |
| Date | |
| Source | Own work |
| Author | Ryabitskii |
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I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution 4.0 International license.
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This image was uploaded as part of Science Photo Competition 2021 in Ukraine. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:09, 15 December 2021 | | 1,176 × 1,600 (207 KB) | Ryabitskii (talk | contribs) | Uploaded own work with UploadWizard |
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