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Recently, a public announcement was made regarding the approval for the technical upgrade project of Shandong Chengwu COSCO Chemical Co., Ltd., which aims to increase annual production capacity to 8,000 tons of bis(trichloromethyl) carbonate (for re-submission for approval). The main components of the project involve constructing a 8,000 t/a production facility for di(trichloromethyl) carbonate to replace the existing 8,000 t/a production facility for the same product, along with a corresponding finished goods warehouse. The production facilities of this project mainly consist of 60 chlorination towers (1#~60#). Upon completion of the project, the production capacity of di(trichloromethyl) carbonate will remain unchanged at 8,000 t/a. The total investment for the project is 30 million yuan, of which 955,000 yuan is allocated to environmental protection measures. Dicyl (trichloromethyl) carbonate, also known as triphosgene or solid phosgene, has the corresponding molecular formula. At room temperature it appears as a white crystalline solid; it has an irritating odor similar to that of phosgene, is insoluble in water, but soluble in various organic solvents. It decomposes in the presence of water, heat, or strong bases to produce highly toxic phosgene and hydrogen chloride ; It can be obtained by the chlorination of dimethyl carbonate, and in organic synthesis it can serve as a safe alternative to phosgene, being widely used in the preparation of pharmaceutical intermediates, pesticides, polycarbonates, polyurethanes, isocyanates, acyl chlorides and other compounds ; This substance is a hazardous chemical with high toxicity and corrosivity; it causes severe irritation and damage to the human respiratory tract, skin, and mucous membranes. Its handling and storage require strict containment, appropriate protective measures, and keeping it away from humid and alkaline substances. All activities related to its production, transportation, and use must comply with the regulations for the safe management of hazardous chemicals. Shandong Chengwu Zhongyuan Chemical Co., Ltd. is a manufacturing enterprise specialized in the production of fine chemical products such as bis(trichloromethyl) carbonate (triphosgene). The company’s core product is bis(trichloromethyl) carbonate, with an existing production capacity of 8,000 tons per year; technical upgrades will be completed by 2025. The company also produces pharmaceutical/pesticide intermediates such as salicyl cyanide, 4-amino-8-benzamide, and hydrochloric acid. Its parent company, Hangzhou Xinyuanzhong Chemical Co., Ltd., is responsible for import and export trade operations.
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