Thiourea is an organic sulfur compound, chemical formula CH4N2S, white and glossy crystal, bitter taste, density 1.41g/cm³, melting point 176 ~ 178℃. Used in the manufacture of drugs, dyes, resins, molding powder and other raw materials, also used as rubber vulcanization accelerator, metal mineral flotation agent and so on. It is formed by the action of hydrogen sulfide with lime slurry to form calcium hydrosulfide and then calcium cyanamide. It can also be prepared by melting ammonium thiocyanide, or by acting cyanamide with hydrogen sulfide.
On October 27, 2017, the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization was preliminarily collated for reference, and thiourea was in the list of 3 types of carcinogens.
Chinese name: thiourea
Foreign name: Thiourea
Alias: thiourea
Chemical formula: CH4N2S
Molecular weight: 76.121
CAS login number: 62-56-6
EINECS entry number: 200-543-5
Melting point: 176 to 178 ℃
Density: 1.41 g/cm³
Appearance: white glossy crystal
Flash point: 66.8 ° C
Security description: S36/37; S61
Danger symbol: Xn
Hazard description: R22; R40; R51/53; R63
UN Dangerous Goods Number: 2811
Packaging and Shipping Information
25kg*800bag 800kg*20bag
20 ton/FCL 16ton/FCL
Operation and Storage
Operation precautions: closed operation, local exhaust. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety glasses, and rubber gloves. Keep away from fire and heat. No smoking in the workplace. Use explosion-proof ventilation systems and equipment. Avoid producing dust. Avoid contact with oxidants and acids. When handling, light loading and unloading should be done to prevent damage to packaging and containers. Equipped with the corresponding variety and quantity of fire equipment and leakage emergency treatment equipment. Empty containers may have harmful residues.
Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat. The package is sealed. It should be stored separately from oxidants, acids and edible chemicals, and should not be mixed. Equipped with the corresponding variety and quantity of fire equipment. Storage areas should be equipped with suitable materials to contain leaks.
Application
Thiourea is mainly used as a raw material for the synthesis of sulfathiazole, methionine and other drugs, and can also be used as a raw material for dyes and dyeing auxiliaries, resins and molding powders, and can also be 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 as a metal rust inhibitor. In terms of photographic materials, it can be used as a developer and toner, and can also be used in the electroplating industry. Thiourea is also used in diazo photosensitive paper, synthetic resin coatings, anion exchange resins, germination promoters, fungicides and many other aspects. Thiourea is also used as a fertilizer. Used in the manufacture of drugs, dyes, resins, molding powder, rubber vulcanization accelerator, metal mineral flotation agents and other raw materials.
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Company Introduction
Shandong DESENLAI Chemical Co., Ltd. was established in July 2011, headquartered in Tianqiao District, Jinan City, Shandong Province.
With more than ten years of fine chemical business foundation, DSL Chemical is committed to building the most valuable chemical trading company in the whole industrial chain in China. With advanced marketing concept combined with modern management mode, the company provides customers with quality products and services and comprehensive "all-around" solutions.
The company adheres to the goal of green and sustainable development, and has long been committed to the operation of various fine chemical products, involving lithium new energy, biodegradable materials and other green energy fields. Such as NMP, butyrate, BDO, adipic acid, glycol and so on.
