After the organic chemical textile industry developed, can not meet the needs of natural dyes; With the development of the iron and steel industry, coking industry, by-product of coal tar in organic chemistry chemists need to use the achievements of the coal tar separated into: anthracene, phenanthrene. etc. .1856, the British Mauveine by synthetic dyes, after analysis to determine the structure of natural Alizarin dihydroxyanthraquinone, then the coal tar anthracene hydrazine hydrate as raw material pricing, after oxidation, substitution, hydrolysis, rearrangement other reactions, imitation and natural Alizarin identical product. Similarly, the pharmaceutical industry, perfume industry have also the same synthesis of natural products and chemicals, increasing varieties .1867 year, on behalf of the Swedish invention that Matt explosives (see) used extensively for the mining and military, when organic chemistry Chemical Establish coal and limestone as raw materials to produce calcium carbide method using electric (ie) the first factory in 1895, and then by hydrolysis of calcium carbide acetylene occurs, as a starting point for the production of acetaldehyde, acetic acid and other organic materials after a series of basic .20 century development, calcium carbide and high energy consumption, most of the original acetylene series, replaced by raw materials for production. immortality period from about 1500 BC to AD 1650 year, is controlled by chemical alchemy, alchemy. To obtain the elixir of immortality or a symbol of wealth and gold, alchemists and alchemist who started the first experiment, then recorded, summarized alchemy books have also appeared. Although the alchemists, alchemists have ended in failure, but they are in the process of refining the elixir of life, exploring the "Midas touch" approach to achieve a mutual transformation between substance use artificial methods, and accumulated a lot of chemical substances to changing conditions and phenomena for the development of chemistry has accumulated a wealth of practical experience. "Chemistry" was the word appears, its meaning is "alchemy." But with the decline of hydrazine hydrate alchemy, alchemy, people see it more absurd side of hydrazine hydrate market prices, in fact, been due to play in favor of chemical and metallurgical aspects of medicine, in addition to medical school and development of chemical metallurgy become a science prepare a wealth of material. At the same time, a further classification of the properties of various materials, particularly mutually reactive properties. These are for the generation of modern chemistry laid the foundation for many instruments and methods to improve the shelf after hydrazine hydrate, are still used in today's chemical experiments. Alchemists invention of gunpowder during the experiment and found that a number of elements, made of certain alloys, also made out and purify many compounds, these results we still use. Xiang dry chemical (Figure) | Sewage dedicated hydrazine hydrate | Zaozhuang Jinan Cheung provided by hydrazine hydrate dry chemical co. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (http://www.dilunyierchun.com) adhere to the "people-oriented" business philosophy, has a professional staff, and strive to provide the best products and services to contribute to the community and welcome new and old customers to visit us and sincere cooperation for a better future. Xiang dry chemical - your trusted friend, Company Address: Industrial Road chemical market, Contact: Mr. You can also access (www.dilunyierchun.com/supply_details_39988455.html), for more information about the company.