Potassium carbonate

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Potassium carbon dioxide

 

Carbonate potassium (potassium carbonate, potash) K2CO3 — medium the potassium salt of carbonic acid. It is a white crystalline substance, soluble in water. Low-toxic, relates to III class of hazard. The old name of salt — potash from gall. роtаsсh directly or through him. Pottasche, FR. potasse.

Temperature melting point is 891 °C. Soluble in water, hygroscopic. Forms a hydrate with 1.5 H2O during crystallization from aqueous solutions and storing the anhydrous form in the air.

Carbonate potassium get:

• as a byproduct in the processing nepheline;

• by electrolysis of potassium chloride, produce potassium hydroxide, which reacts with carbon dioxide, to form water and potassium carbonate;

• the influence of CO2 in the hydroxide solution potassium.

For use as a fertilizer, potash is produced from lye by leaching water ash of grasses or seaweed, as it is potassium most in soluble part of plant residues (white "ash" from the fire — mostly potash). The principle of production: burnt clay vessel with a small hole in bottom poured the ash and lightly stamped. Then he poured a certain with plenty of water. Water that has passed through the vessel, carefully collected and it was filled next batch. And so until, until the liquid has acquired a syrupy consistency. After excess liquid was evaporated in a metal dish and received potash.

In industry uses the following types of potash: calcined and polusharovidnye. Depending on the physico-chemical properties of potash consists also on the first, second and third grade.

It used in chemical industry, glass, in case fire, light industry and in other industries. In the construction of the potash used as a antifreeze additive, in chemical industry is used for making of colors, and also, he's better than soda absorbs from gaseous mixtures of hydrogen sulfide. In light industry for the manufacture of leather. Also potash is used in the production detergents. It serves as raw material for the production of optical glass. In case fire with potash treated wood structures and designs. In agriculture, potash is used as fertilizer, since potassium is a vital element for plants.

Was as a dietary Supplement, E501.

Carbonate potassium is used:

• for the manufacture of liquid soap;

• for the production of pigments;

• crystal, optical or refractory glass;

• dyeing;

• cultivation of agricultural crops (potassium is a good fertilizer for plants);

• in pictures as part of the developers;

• as additives in construction mortar and concrete to reduce the temperature of freezing (gives white spots, therefore, developed special antifreeze additives, not giving divorce);

• for the production of other compounds potassium;

• as a scavenger of hydrogen sulfide in purification gas;

• dehydrating agent.

Transportation potash by rail and road. The carriage is in standard factory packaging, in covered vehicles. When transportation of potash by railway transport using wagons or containers. During transportation you should protect potash from moisture.

For packaging potash use laminated paper, laminated plastic bags weighing 20-50 kg. in addition, potash can be Packed in big bags weighing 1 ton

Storage potash is carried out in dry and closed rooms in standard factory package. During the storage protect the potash from moisture.

 

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