Sebastian Tanatar
Sevast'ian (or Sebastian) Moiseevich Tanatar (; 7 (19) October 1849, Odesa – 30 November (19 December) 1917, Odesa) was a Russian chemist. He was born into a family of Karaite merchants in Odesa. When he was 14, his family moved to Simferopol, Crimea, where he graduated from the Simferopol gymnasium three years later. In 1867, he returned to Odesa to attend Novorossiyskiy University (now Odesa University), from where he graduated in 1872. In 1873–1874 he studied abroad. He later returned to Odesa University, where he achieved the rank of a Full Professor in 1896. Tanatar made several pioneering contributions to chemistry. In 1880, he showed that fumaric and maleic acid, upon oxidation, yield two isomeric hydroxycarboxylic acids, later shown to be racemic and mesotartaric acids. In 1895, he accomplished the transformation of cyclopropene into propylene at high temperature. In 1898–99 he produced perborates and percarbonates by electrolysis. Tanatar also discovered ...
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Odesa
Odesa, also spelled Odessa, is the third most populous List of cities in Ukraine, city and List of hromadas of Ukraine, municipality in Ukraine and a major seaport and transport hub located in the south-west of the country, on the northwestern shore of the Black Sea. The city is also the administrative centre of the Odesa Raion and Odesa Oblast, as well as a multiethnic cultural centre. As of January 2021, Odesa's population was approximately On 25 January 2023, its Historic Centre of Odesa, historic city centre was declared a World Heritage Site and added to the List of World Heritage in Danger by the UNESCO World Heritage Committee in recognition of its multiculturality and 19th-century urban planning. The declaration was made in response to the Odesa strikes (2022–present), bombing of Odesa during the Russian invasion of Ukraine, which has damaged or destroyed buildings across the city. In classical antiquity a large Greek settlement existed at its location no later than t ...
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Hydrogen Peroxide
Hydrogen peroxide is a chemical compound with the formula . In its pure form, it is a very pale blue liquid that is slightly more viscosity, viscous than Properties of water, water. It is used as an oxidizer, bleaching agent, and antiseptic, usually as a dilute solution (3%–6% by weight) in water for consumer use and in higher concentrations for industrial use. Concentrated hydrogen peroxide, or "high-test peroxide", decomposes explosively when heated and has been used as both a monopropellant and an oxidizer in rocketry. Hydrogen peroxide is a reactive oxygen species and the simplest peroxide, a compound having an oxygen–oxygen single bond. It decomposes slowly into water and elemental oxygen when exposed to light, and rapidly in the presence of organic or reactive compounds. It is typically stored with a Stabilizer (chemistry), stabilizer in a weakly acidic solution in an opaque bottle. Hydrogen peroxide is found in biological systems including the human body. Enzymes that u ...
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Ukrainian Chemists
Ukrainian may refer or relate to: * Ukraine, a country in Eastern Europe * Ukrainians, an East Slavic ethnic group native to Ukraine * Demographics of Ukraine * Ukrainian culture, composed of the material and spiritual values of the Ukrainian people * Ukrainian language, an East Slavic language of the Indo-European language family, spoken primarily in Ukraine * Ukrainian cuisine, the collection of the various cooking traditions of the people of Ukraine See also * Languages of Ukraine The official language of Ukraine is Ukrainian language, Ukrainian, an East Slavic languages, East Slavic language of the Indo-European languages family. It is spoken regularly by 88% of Ukraine's population at home in their personal life, and as ...