Produse pentru industrie chimică românească (5)

Hydrochloric Acid is a corrosive, strong mineral acid with many industrial uses. A colorless, highly pungent solution of hydrogen chloride (HCl) in water, when it reacts with an organic base it forms a hydrochloride salt. With major production starting in the Industrial Revolution, hydrochloric acid is used in the chemical industry as a chemical reagent in the large-scale production of vinyl chloride for PVC plastic, and MDI/TDI for polyurethane. It has numerous smaller-scale applications, including household cleaning, production of gelatin and other food additives, descaling, and leather processing. About 20 million tonnes of hydrochloric acid are produced worldwide annually. It is also found naturally in gastric acid.

Sodium hydroxide, otherwise called Caustic Soda, is an inorganic compound with chemical formula NaOH. It is called caustic soda because it is highly corrosive in nature. It is available in many forms in the industry, and the most common forms are caustic soda flakes and caustic soda pearls. This product has several industrial applications but it is highly reactive, so it has to be used carefully lest, it can cause skin irritation. Caustic Soda is a strong base with a wide range of applications in different industries. Worldwide, the major users of caustic soda are the aluminum industry, pulp & paper and the chemical industry. The main applications are water treatment and water purification, as cleaning agent, or a wide range of uses in chemical industry like starch production or for the desulphurization in the petrochemical industry.

Xylenes are produced with different processes. When in refineries, oil cuts enter the reforming units, aromatic compounds comprise a great proportion of the outflow material. Separating this flow into its components, accounts for more than 70 percent of global xylene supply. Also in the steam cracking process in olefin units, some quantity of Mixed Xylene is produced. In addition, disproportioning Toluene into Benzene and Xylene and treating Pyrolysis Gasoline are also different ways to produce Mixed Xylene. Mixed xylenes are the second-most-important aromatic product in terms of world consumption for chemical manufacture, ranking behind benzene and ahead of toluene. Mixed xylenes refers to the equilibrium mixture of four isomers with the same C8H10 chemical formula. The isomers in order of natural occurrence are meta-xylene, ortho-xylene, para-xylene, and ethyl-benzene.

Toluene is a liquid chemical compound utilized in the manufacturing of many commercial products, including paints and glues. Colorless and insoluble in water, toluene can be dangerous when its fumes are inhaled, causing neurological damage and intoxication. Because of this, toluene is sometimes abused as an inhalant drug. Individuals who use paints and thinners frequently, like those who work with such products professionally, wear face masks in order to minimize the inhalation of toluene. Beyond its uses, however, toluene’s chemical structure is quite interesting of its own accord. Toluene demand growth in Europe is expected to be positive but low at a rate less than GDP. Demand will get a fillip in 2009 following the start-up of ExxonMobil’s new TDP unit in Rotterdam, the Netherlands.

Diisocyanates are a family of chemical building blocks mainly used to make polyurethane products, such as rigid and flexible foams, coatings, adhesives, sealants and elastomers. Many of the products we rely upon every day are safer and more comfortable through the use of polyurethanes made possible by diisocyanates. Polyurethane chemistry is complex, but the basics are relatively easy to understand. Polyurethanes are produced by combining diisocyanates with polyols and other chemical additives. Because a variety of diisocyanates and a wide range of polyols can be used to produce polyurethane and the speed of the reaction can be adjusted, a broad spectrum of materials can be produced to meet specific application needs. Diisocyanates are important in the production of countless products, particularly in the transportation and construction industries. TDI is used primarily in the production of flexible foams.