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Pharmaceutical Intermediate

Chlorosulfonyl Isocyanate (CSI)
Chlorosulfonyl Isocyanate (CSI)

Product name: Chlorosulfonyl Isocyanate; Sulfurisocyanatidoyl Chloride
English name: Chlorosulfonyl Isocyanate; Sulfurisocyanatidoyl Chloride
Abbreviation: CSI
CAS No.: 1189-71-5
Molecular formula: CClNO3S
Molecular weight: 141.53
Physical and chemical properties: colorless transparent liquid flows easily; density: 1.626g/cm3; melting point: -44℃; boiling point: 107℃; refractive index: 1.447; 
soluble in most organic solvents

Technical Specifications:
(1)appearance: colorless transparent liquid
(2) Assay: ≥99.20%
(3)impurity(CPSI): ≤0.60%

Packing specification: 50kg/drum, 80kg/ drum or on demand
Storage: should be preserved in ambient, dry and ventilated place, stay away from heat and fire, avoid direct light exposure.
Main applications: The chemical properties of this compound are very active. In terms of medicine, it can be used for the synthesis of cefuroxime, cefoxitin and pulmonary hypertension drug macitentan. In terms of pesticides, it can be used in the synthesis of the herbicides Orthosulfamuron and Saflufenacil. In addition, it can also be used in the paper industry to synthesize additives.It can also be an additive of electrolyte for lithium-ion battery.

 

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