History of the company dates back to September 25, 1915.

The place where the plant was erected was formerly called Tchernorechye, by the name of a brook Tchernaya (“Black”) which flows into the Oka river.

It was here, “on the land of a state summer residence in Tchernorechye of Balakhna district, 30 versts from Nizhny Novgorod, at the station Rastyapino, in one and a half versts from the Oka river”, that a plant of mineral acids was established, future Tchernorechensky Chemical Plant, and now – LLC “Korund”.

In October 1916 sulfuric and nitric acid production was set in operation.

On November 22, 1920 first tons of superphosphate were produced. Following superphosphate there were built production capacities for alumina, copper vitriol and Glauber’s salt.

Later on the defining words in the history of the plant have become “the first”, “the only” and “unique”. Dozens of chemicals have been produced here for the first time in the country. The enterprise is unique because most of the floors work by their own technologies, developed by the plant specialists. The enterprise has always owned a unique research base and served testing ground for development of new technologies; the experience of their application was afterwards shared with other companies of the industry. Modern chemical enterprises all over the country are now using technological experience of Tchernorechensky Plant.

	In 1925 there was started construction of ammonium sulfate, red phosphorus and calcium carbide plants, and the first in the country floor of ammonia synthesis. The day of launching the floor – February 9, 1928 – is considered to be birthday of Russian nitrogen industry.
	In the 1930s, as a result of development of watch and precision instrument-making industry, it was decided to build the first in the country production of synthetic corundum. In 1936 the first home pilot unit for corundum growing was launched, and by 1938 corundum production had been mastered.
	In 1941, already in the first month of the war, production of a legendary antitank self-inflammable liquid “KS” was organized at Tchernorechye. In September 1941 a production floor of cyanides was put into operation. Its products were applied for steel hardening for military purposes.

During the war delivery of potassium nitrate was completed to produce gunpowder. Ammonia output was increased to the maximum. Altogether there were 18 types of new chemicals, production of which was completed at the plant in the war period.

On May 8, 1943, for performance of governmental defense tasks, Tchernorechensky Chemical Plant was awarded Order of the Red Banner of Labour.

In the post-war 1950s the plant chemists obtained the first domestic antituberculous preparation PASK, and first in the country there was developed and introduced a hexachloran  technology.

During the 1950s corundum production expanded, first crystals of dark-red ruby were grown, and technologies of alexandrite, sapphire, amethyst and topaz growth were developed for jewellery applications.

In the 1960s thread guide production for textile industry was mastered.

On September 25, 1965 the plant was awarded a second Order of the Red Banner of Labour.

During the 1970s there was put into operation a floor of household chemical goods, built a large-capacity production of liquid sulfurous anhydride, a new floor for potassium ferrocyanide was launched, urea and synthetic detergent production floors were put into operation, and the first in the country frothing agent production was created.

In 1971 the first domestic polyisocyanate was produced – the main component for obtaining polyurethane foam. In 1978 there was built the first in the country floor to produce flexible polyurethane foam compounds for automotive and furniture industries.

With the development of defense technologies and advent of laser oscillations unique methods were designed and first rod corundums for laser active components were created.

In 1974 the plant started commercial production of laser rubies.

In the 1980s there were built production departments of polyurethane foam blocks and PVC pipes.

In the 1990s the enterprise suffered a crisis, like the whole chemical industry in the country.

	It was in 2004 that the company began to revive. On April 30, 2004 the material complex “Korund” was sold at an auction. A new owner has come to the enterprise, and since then a new life has begun for one of the oldest chemical plants of Russia.
	On September 25, 2005 the plant celebrates its 90th anniversary.