Dye industry for almost a dye (or intermediate) prepared without the use of sulfuric acid. Preparation of azo dye intermediates required for the sulfonation reaction, aniline dye intermediates required for the nitration reaction, both need to use large amount of concentrated sulfuric acid or fuming sulfuric acid. So it has a sulfuric acid plant, some dye works to meet the needs. Can also be used for fertilizers, pesticides, dyes, pigments, plastics, chemical, manufacturing explosives and a variety of sulfate. In petroleum refining, smelting of nonferrous metals, steel pickling, tanning process and the coking industry, textile industry, the defense industry has a wide range of applications. Strong corrosive acid cleaning. In the integrated circuit manufacturing process is mainly used for wafer cleaning. Features 1. dehydration of concentrated sulfuric acid. Dehydration means the removal of non-free state of concentrated sulfuric acid water molecules or hydrogen atoms, according to the composition ratio of water off the organic matter in the process of hydrogen elements. To sulfuric acid, the dehydration of concentrated sulfuric acid nature, rather than the nature of dilute sulfuric acid, concentrated sulfuric acid has a strong dehydration and dehydration, dehydration according to the composition ratio of the water off. Concentrated sulfuric acid was dehydrated substance is a chemical change process, when the reaction, concentrated sulfuric acid by water molecules than the original number of hydroxide (2: 1) was captured anhydrate hydrogen atom and an oxygen atom or off the water of crystallization of the non-free state such as copper sulfate pentahydrate (CuSO4 · 5H2O). Concentrated sulfuric acid etch through the material quickly towel can be dehydrated concentrated sulfuric acid is generally hydrogen, organic oxygen element, which sucrose, sawdust, paper and cotton, organic matter and other substances in the sulfuric acid, dehydrated epigenetic became black carbon, which a process called carbonization. A typical phenomenon of black bread carbonization reaction of sucrose. Placed in a 200mL beaker 20g sucrose sulfate shelf, add a few drops of water, plus the amount of water supply of sulfuric acid, and mix well. Then added 15mL mass fraction of 98% concentrated sulfuric acid, with rapid stirring. Observed experimental phenomena. You can see the sugar gradually darken, volume expansion of industrial sulfuric acid to form porous sponge-like carbon, exothermic reaction, can smell the pungent gas. 2. strong oxidizing. Industrial sulfuric acid | Weihai sulfate | Three level quality assurance provided by the chemical level Chemical Co., Ltd. Jinan three. Jinan three flat Chemical Co. (www.sanpinghuagong.com) strong, credible, in Jinan, Shandong and other chemical products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improve the level of innovative ideas will lead the three chemicals into the brilliant and you work for a better future!