Potash, Carbonate

Potassium was first isolated as a free metal in 1807 by Sir Humphry Davy. It was the first alkali metal to be discovered, produced by electrolysis of potassium carbonate (potash). The element was earlier called Kalium, derived from the Arabic word qili, meaning grass wort, the ash of which was a source of potash. The element derived its symbol K from Kalium. The English name potassium came from potash (pot ash), the carbonate salt of the metal. 

Sodium carbonate, Na2C03, and potassium carbonate (potash), K2CO3, were two... 

Hydrochloric acid is used in numerous applications, but it is generally obtained indirectly as a by-product in other chemical processes. The first large-scale production of hydrochloric acid resulted from the mass production of alkalis such as sodium carbonate (Na C ) and potassium carbonate (potash, K2C03). The depletion of European forests and international disputes made the availability of alkali salts increasingly uncertain during the latter part of the 18th century. This prompted the French Academy of Science to offer a reward to anyone who could find a method to produce soda ash from common salt (NaCl). Nicholas LeBlanc (1743—1806) was credited with solving the problem. LeBlanc proposed a procedure in 1783 and a plant based on LeBlanc s method was opened in 1791. LeBlanc s method uses sulfuric acid and common salt... 

In the all-in, also known as Rongalit C potash process, the print paste contains the dye and the chemicals necessary for fixation. The reducing agent hydroxy-methanesulfinate (Rongalit C), reaches its maximum reactivity under steaming conditions, but decomposes slowly already at room temperature [5, p. 296-298], Potassium carbonate (potash) is the preferred alkali. The dyes are fixed with saturated steam at 100-102°C for 5-15 min. The prints are then rinsed, reoxidized, neutralized, and soaped at the boil. 

Potassium oxide is introduced into glass as calcined potassium carbonate (potash) of various purities (80—97% K2CO3) or as the hydrate K2CO3 1.5 H2O (so-called hydrated potash, pearl ash). Both calcined K2CO3 and hydrate are hygroscopic this property makes precise dosing difficult and may lead to problems with the... 

By far the most important potassium compounds are the fertilizer salts (see Section 2.3). Only 5 to 6% of all potassium compounds consumed, as K2O, are utilized outside the fertilizer industry. In the Earth s crust potassium is the seventh most common element, almost as abundant as sodium. The most important potassium compounds are potassium hydroxide and potassium carbonate (potash). 

Manufacture Potassium carbonate (potash) was formerly produced by the ashing of wood and other plant raw materials. Since the middle of the nineteenth century, the saline residues from the rock salt industry and salt deposits have been the raw materials for potassium carbonate production. The currently industrially most important process is the carbonation of electrolytically produced potassium hydroxide. 50% potassium hydroxide solution (e.g. from the mercury process) is saturated with carbon dioxide, the solution partially evaporated and the potassium carbonate hydrate K2CO3 1.5H2O which precipitates out is separated. After drying, the product is either marketed as potash hydrate or is calcined in a rotary tube furnace at temperatures of 250 to 350°C to anhydrous potassium carbonate. Anhydrous potassium carbonate is also produced in a fluidized bed process in which potassium hydroxide is... 

The phenomenon of leftover ashes in the burning of charcoal can be explained through a kind of contamination minerals like white sodium carbonate, white potassium carbonate ( potash ) and sulfur are, among others, contained in common coal. If connections are made to the historic development of brown coal or hard coal from the remains of plants, it appears to be quite clear, that coal extracted in mining cannot be a pure product. 

K2CO3 Potassium Carbonate Potash. Weak Base. 

Potash. See Potassium carbonate Potash alum. See Potassium alum dodecahydrate Potassium alum anhydrous Potash blue. See Ferric ferrocyanide Potash chlorate. See Potassium chlorate Potash lye. See Potassium hydroxide Potash sulfurated. See Sulfurated potash Potassa. See Potassium hydroxide Potassic ascorbate. See Potassium ascorbate Potassium... 

Desorption of CO and H-S from carbonated potash and alkanolamine solutions... 

Potassium compounds are among the most important base chemicals, especially potassium hydroxide (caustic potash) KOH, potassium nitrate (saltpeter) KNO3, potassium carbonate (potash) K2CO3, potassium chloride KCl, potassium chlorate KCIO3, potassium bromide KBr, potassium iodide Kl, potassium cyanide KCN, potassium sulfate KjSO, and potassium dichromate Ci 20j. 

Alkali A compound that gives a pH between 7 and 14. Hard-water films, carbonates, potash, and phosphates are alkahne. 

POP (9) POE (12) monobutyl ether. See PPG-9-buteth-12 POP (10) POE (9) monobutyl ether. See PPG-10-buteth-9 POP (12) POE (12) monobutyl ether See PPG-12-buteth-12 POP (12) POE (16) monobutyl ether See PPG-12-buteth-16 POP (15) POE (20) monobutyl ether. See PPG-15-buteth-20 POP (17) POE (17) monobutyl ether. See PPG-17-buteth-17 POP (20) POE (30) monobutyl ether See PPG-20-buteth-30 POP (24) POE (27) monobutyl ether See PPG-24-buteth-27 POP (26) POE (26) monobutyl ether See PPG-26-buteth-26 POP (28) POE (35) monobutyl ether. See PPG-28-buteth-35 POP (30) POE (30) monobutyl ether. See PPG-30-buteth-30 POP (33) POE (45) monobutyl ether. See PPG-33-buteth-45 POP (3) POE (3) myristyl ether. See PPG-3-myreth-3 POP (3) POE (11) myristyl ether. See PPG-3-myreth-11 POP (3) POE (6) oleyl ether. See PPG-3-PEG4 oleyl ether POP(3)POE(6)tridecylether. See PPG-3 trideceth-6 POP (15) POE (10) tridecyl ether See PPG-15 trideceth-10 POP (23) POE (4) trimethylolpropane. See PPG-23-PEG4 trimethylolpropane POP (11) stearyl ether. See PPG-11 stearyl ether POP (15) steaiyl ether. See PPG-15 stearyl ether POP (15) stearyl ether benzoate. See PPG-15 stearyl ether benzoate Portland stone. See Calcium carbonate Potash. See Potassium carbonate Potash lye Potassa. See Potassium hydroxide Potassium abietoyl hydrolyzed collagen Synonyms Proteins hydrolysates reaction prod, with abietoyl chloride, compds. 

The term ash signifies a product obtained by heating or burning. The earliest alkaline materials (notably, potassium carbonate, potash) were extracted from the ashes of burned plants. The first commercial source of soda ash was the Leblanc process, featured in Example 21-1. 

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