Thiourea powder Raw Materials CAS 62-56-6

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Product details

Uses and synthesis of Thiourea powder

Thiourea powder, white bright bitter crystals, soluble in cold water, ethanol, slightly soluble in ether, easy to deliquesce in air, Thiourea CAS 62-56-6 converted to ammonium thiocyanate at 150 ℃, with the reducing property, can make the free iodine reduced to iodide.

Thiourea Raw Materials is rich in reactivity and is used to prepare various compounds. It can react with various oxidizing agents to form organic compounds, and Thiourea Raw Materials can also be used with inorganic compounds to form soluble addition compounds.

Applications / Functions of Thiourea powder

Thiourea CAS 62-56-6 Used in the manufacture of sulfonamide drugs, dyes, resins, compression molding powder, etc., also used as rubber vulcanization accelerator, flotation agent for metal minerals, etc.

1. Thiourea powder used as analytical reagents, complexation indicator and color layer analysis reagent
2. Thiourea powder is used as the intermediate of drug production in medicine. Used as vulcanization accelerator in rubber industry. Used as flotation agent in mining industry. Also used as fabric, paper treatment agent, printing and dyeing auxiliaries.
3. Thiourea powder is the intermediate of fungicide seed dressing, herbicide ethofumesate, tebuconazole, etc. It is also the raw material of medicine thiamine thiazole, and can be used as the raw material of dyestuffs, resins, compression molding powders, and can be used as vulcanization accelerant of rubber, and the flotation agent of metal minerals.
4. Thiourea Raw Materials Used as raw material for synthesizing sulfathiazole, methionine and fat pig tablets. Used as raw materials for dyes and dyeing auxiliaries, resins and compression molding powders. It is also used as a vulcanization accelerator for rubber, a flotation agent for metal minerals, a catalyst for the production of phthalic anhydride and fumaric acid, and an antirust and corrosion agent for metals. In photographic materials, it can be used as a developer and coloring agent. It is also used in the electroplating industry. Thiourea is also used in diazo-sensitive paper, synthetic resin coatings, anion-exchange resins, germination promoters, fungicides, and many other applications.Thiourea Raw Materials is also used as a fertilizer.
5. Strong denaturant, increases protein solubility and recovery

Reducing agent. Precipitant for lead, thallium and cadmium. Determination and assay of bismuth, starvation, ruthenium, selenium, lead, tellurium, palladium and selenite. Organic synthesis, preparation of thiols from haloalkanes.

Physicochemical Property of Thiourea powder

White or light yellow glossy flaky, columnar or needle crystals, with bitter taste.Thiourea CAS 62-56-6 Soluble in water and ethanol, almost insoluble in ether.

Production methodprocess of Thiourea powder

• Absorb hydrogen sulfide with milk of lime under negative pressure and cooling to produce calcium thiourea solution. Calcium hydrosulfide and calcium cyanamide (lime nitrogen) according to the 1:5 molar ratio, at 80 ℃ about 3h reaction, that is, the thiourea solution, filtration, concentration, cooling crystallization, dumping filtration and drying, to get the finished product Thiourea powder . In addition, Thiourea powder can also be produced by ammonium thiocyanate method and diazomethane method.
• The preparation method is to react with barium sulfide and sulfuric acid or hydrochloric acid, hydrogen sulfide gas is absorbed by the negative pressure of the milk of lime to obtain calcium hydrosulfide solution, and then reacted with calcium cyanamide, calcium hydrosulfide and calcium cyanamide molar ratio of 1:5, under constant stirring, the reaction temperature is (80 ± 5)℃, the reaction time of 3h, filtered under negative pressure, can generate thiourea liquid, and then evaporation, filtration, cooling, crystallization, that is, the crystal After evaporation, filtration, cooling and crystallization, the crystalline thiourea is obtained, and centrifugal dehydration and drying is obtained as Thiourea Raw Materials.
• Synthesis method with barium sulfide and hydrochloric acid (or sulfuric acid) reaction, with the milk of lime under negative pressure absorption, and then reacted with lime nitrogen, after filtration, cooling crystallization, centrifugal separation, drying, the production of Thiourea CAS 62-56-6

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