The tanning

Published January 01, 2017

The tanning

A tanning in a tanning industry is the processing of leather tanning agents to impart plasticity, strength, wear resistance and other properties required in the development of leather and fur products; tanning agents reacting with the functional groups of linear polymers of the amino acid to form a stable cross-linking between collagen molecules themselves...

Water treatment

Published January 01, 2017

Water treatment

To bring the water quality into compliance with the requirements of users conducted water treatment coming from a natural water source. This treatment can be carried out on plants or water treatment plants for the needs of utilities, in almost all industries...

The carbon monoxide

Published January 01, 2017

The carbon monoxide

The carbon monoxide a deadly poison, which binds to the hemoglobin in blood is significantly stronger than the life-giving oxygen. It is a colorless, poisonous gas (under normal conditions), odorless and tasteless. The chemical formula CO. Death occurs already when carbon monoxide binds to hemoglobin of 80%. The carbon monoxide contained (12%) in vehicle exhaust gases...

The iron

Published January 01, 2017

The iron

The iron is an element of the eighth group of the fourth period of the periodic table of chemical elements with atomic number 26. Iron is one of the most common metal in the earth's crust. This malleable metal silvery white color with high chemical reactivity. Iron corrodes rapidly at high temperatures or high humidity air. In pure oxygen it burns, and in finely divided iron ignites spontaneously in air...

The white phosphorus

Published January 01, 2017

The white phosphorus

The white phosphorus is a white solid (due to impurities may have a yellowish tint). In appearance, it looks like a wax or refined paraffin wax and cut with a knife easily deformed by small forces...

The cobalt

Published January 01, 2017

The cobalt

The cobalt is a silvery-white, slightly yellow metal with an atomic number of 27. Mass fraction of it in the earth's crust is 4*10-3%. It is a member of minerals: carolite CuCo2S4, linneite Co3S4, cobaltite CoAsS and other. There are about 30 cobalt-minerals...

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