Hydrochloric acid of 0,1 N.

Hydrochloric acid of 0,1 N.

Hydrochloric acid (chlorohydrogen, hydrochloric, hydrogen chloride) ^[1] — HCl, chlorohydrogen solution in water; strong monobasic acid. Colourless (technical hydrochloric acid yellowish because of Fe impurity, _Cl2, etc. ), the "smoking" on air, caustic liquid. The maximum concentration at 20 °C is equal to 38% on weight, density of such solution of 1,19 g/cm ³. Molar mass is 36,46 g/mol. Solisolyany acid are called chlorides. Hydrochloric acid is received dissolution of gaseous chlorohydrogen in water. Chlorohydrogen is received combustion of hydrogen in chlorine, the acid received in such a way is called synthetic. Also hydrochloric acid is received from abgaz — the collateral gases which are formed at different processes, for example, at chlorination of hydrocarbons. The chlorohydrogen which is contained in these gases is called abgazny, and the acid received thus — abgazny. In the last decades the share of abgazny hydrochloric acid in output gradually increases, forcing out the acid received by combustion of hydrogen in chlorine. The hydrochloric acid received by method of combustion of hydrogen in chlorine contains less impurity and is applied in need of high purity.

• Apply in hydrometallurgy and galvanoplasty (etching, dekapirovaniye), to surface cleaning of metals during the soldering and tinning, to receiving zinc chlorides, manganese, iron, etc. metals. In mix with Pavispolzuyetsya for cleaning of ceramic and metal products (inhibited acid is necessary here) of pollution and disinfection.
• In the food industry it is registered as the acidity regulator (rn), food dobavkiye507. It is applied to production of zeltersky (soda) water.
• Natural component of gastric juice of the person. Solutions of hydrochloric acid, 0,3 — 0,5% , usually in mix with enzyme pepsin, appoint inside the patient with hypoacidity.