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The year 2006 is the 125th anniversary of a chemical reaction, the discovery of which by Mikhail Kucherov had a profound effect on the development of industrial chemistry in the 19-20th centuries. This was the hydration of alkynes catalyzed by mercury ions that made possible industrial production of acetaldehyde from acetylene. Historical circumstances of this discovery and subsequent events are discussed. (Contains 1 figure.)

The article is based on the idea that in the setting of multiculturalism of the Russian society, the escalation of ethnic conflict is fraught with grave risks to the territorial integrity of the state; therefore, there is much tension around the issue of ensuring the spiritual security of the Russian society as a key factor in preserving the national sovereignty and cultural identity of the Russian Federation. The analysis of ethnocultural education as a social institution and sociocultural space of the socialization of an individual has made it possible to suggest that it has the potential to ensure the spiritual security of the Russian society, particularly in regard to interethnic relations. The authors conclude that the continuity of traditions, the interaction of ethnocultures, their sustainability and renewal in the dynamic changes of modern society is comprehended through ethnocultural education, which allows preserving the heritage of local cultures within the context of the nationhood of the Russian Federation. Hence, ethnocultural education serves as a factor of the spiritual security of the Russian multicultural society, ensuring the continuity of reproduction of historical traditions of long-term cohabitation and cooperation of various ethnic cultures in the common cultural and political space of the Russian Federation, having a beneficial effect on the harmonization of interethnic relations and paving the way for the sustainable development of the Russian society. [ABSTRACT FROM AUTHOR]