Sodium hydroxide (also known as caustic soda, soda, craft-soda) is a white hygroscopic powder with chemical formula NaOH. When dissolved in water it develops heat and gives a strong base with a pH of 14 at a concentration of 1 mol / l. It reacts with the carbon dioxide from the air, and gives sodium hydrogencarbonate, and can therefore be stored in closed containers a. Use:
- Production of various soaps
- Production of various paints and varnishes
- Production of cellulose from wood
Zeolites are widely used in water-purification industry, as catalysts for the preparation of advanced materials and nuclear processing. They are used to extract nitrogen from the air to increase the content of oxygen. They are also used for industrial and medical purposes, but their largest use is in the production of detergent. They are also used in medicine and agriculture.
Sodium sulfate is a salt of sodium and sulfuric acid. In an anhydrous form, it is a white crystalline powder with the chemical formula Na2SO4, while as a decahydrate it is known as Glauber’s salt or sal mirabilis (miraculous salt) with the formula Na2SO4 · 10H2O. With an annual production of 6 million tons, sodium sulfate is one of the most important commercial chemicals. It is mainly used in the production of detergents, and in Kraft’s process of paper production.