Potassium sulphate CAS NO.7778-80-5

Potassium sulfate (K2SO4) is a salt composed of sulfate ions and potassium ions, usually colorless or white crystals, granules or powders.No smell, bitter taste.Qualitative hard.The chemistry is not lively.It's stable in the air.The density of 2.66 g/cm3.Melting point is 1069 ℃.The aqueous solution is neutral and the pH at normal temperature is about 7.1g is soluble in 8.3ml water, 4ml boiling water, 75ml glycerin, and insoluble in ethanol.

The main purpose is serum protein biochemistry test, kjeldahl nitrogen catalyst, preparation of other potassium salts, fertilizer, drugs, preparation of glass, alum and so on.

Chinese name Potassium sulfate Don't say English name Potassium sulphate Potassium sulfate chemical formula K2SO4 molecular weight 174.24 CAS login number 7778-80-5 login EINECS number 80-915-5 boiling point melting point 1067 ℃, 1689 ℃ water soluble 110 g/L (20 C) DHS dense degree of 2.66 g/cm3 colorless or white crystalline, granular or powder flash point nonflammable ionic crystal crystal structure, orthorhombic system

directory

1 the nature

Physical property

Chemical property

2 roles and USES

3 safety terms

4 the preparation of

5 agricultural application

Property editor

Physical properties

Appearance and properties: colorless or white, or white, square or diagonal crystalline or granular powder.

Taste: bitter saltiness.

Relative density (water = 1) : 2.660

Solubility: 110 g/L (20 ℃), soluble in water, insoluble in ethanol, acetone, carbon disulfide.Potassium chloride and ammonium sulfate can increase solubility in water, but it is hardly soluble in saturated solution of ammonium sulfate.

Flame reaction: purple (through blue cobalt glass) [1]

Chemical properties

Complex decomposition reaction: can react with soluble barium salt solution to produce barium sulfate precipitation.[1]

Role and purpose editing

It is a basic raw material for producing various kinds of potassium salts such as potassium carbonate and potassium persulphate.The glass industry is used as a clearing agent.The dye industry is used as intermediate.The spice industry is used as an auxiliary agent.The pharmaceutical industry is also used as a laxative and treatment of soluble barium salt poisoning.Potassium sulphate is commonly used in agriculture, and the potassium oxide content is 50%, commonly known as "white Gary" in Taiwan.In addition, potassium sulfate is also used in industry for glass, dyes, spices, medicines and so on.

Security term editor

1. Do not inhale dust.

Avoid contact with skin and eyes.

The preparation of the editor

The sulfite and potassium salt lake are used for the preparation.Can also be used under 98% sulfuric acid and potassium chloride in the 550 ℃ high temperature reaction, directly preparing potassium sulfate, hydrochloric acid is formed in reaction process, the water absorption, by-product hydrochloric acid, the method for China's industrial production the main method of potassium sulfate, called ham method.The method of pyrolysis of alum was used.

In Germany, potassium sulfate is mainly produced by the reaction of magnesium sulfate and potassium chloride in the liquid phase.

It is produced by the reaction of sulfuric acid and potassium chloride.Mixed sulfuric acid and potassium hydroxide can also be obtained with potassium sulfate: H2SO4 + 2KOH

Potassium sulfate and potassium sulfate were prepared by potassium chloride and mixed salt

This process is made from the high temperature salt produced in the production of potassium chloride potassium chloride, and the mixture of potassium magnesium alum and sodium chloride is obtained through a conversion of high temperature salt and potassium chloride.In addition, fatty acid amine salts were added to the materials and the foaming agent of terpenenol and the mother liquor of the system were made into the slurry. The flotation separation was carried out in the flotation machine to obtain the soft potassium magnum and industrial salt.Potassium potassium sulfate is separated from potassium chloride in aqueous solution.The process of preparation of potassium chloride in the production of potassium chloride was introduced.In this method, two kinds of raw materials, such as high temperature salt and potassium chloride, were separated by two kinds of raw materials, such as potassium sulfate and sodium chloride.This method has built an 8,000 tons/year potassium sulfate production workshop in the third chemical plant of hansell.A ton of potassium sulphate consumed 1.15 tons of potassium chloride and 3.0 tons of high-temperature salt, while producing 1.20 tons of sodium chloride.