December 28, 2010 (One Question per Day)

Molecular weight: 60.07 Properties: colorless and odorless gas. The melting point is -138.8°C, the boiling point is -50°C; the relative density of the liquid is 1.028 at 17/4°C, while the density of the gas is 2.688 g/L at 25°C. The critical pressure is 5.98 MPa. Soluble in alcohol. At a certain temperature, under the action of a catalyst, it can react with H2 and H2O to produce H2S. Preparation method: 1. Sulfur and carbon monoxide are synthesized via vapor-phase catalysis using carbon monoxide and sulfur, with a molar ratio of sulfur to carbon monoxide of 3-5:1. The reaction temperature is 350-450°C, and sulfides such as sodium sulfide, potassium sulfide, nickel sulfide, etc., are used as catalysts. The reaction takes place at atmospheric pressure for 0.5-2 minutes, yielding a yield of 92%-97%, with the product purity exceeding 92%. This reaction can also be carried out under pressurized catalytic conditions, using sodium acetate as a catalyst and butanol as a solvent; at 1.27 MPa and 125–130°C, carbon disulfide can be obtained in a 90% yield. Furthermore, good results have also been achieved in the production of carbon oxysulfide using the gas-solid catalytic method with BX molecular sieve as a catalyst. 2. It is obtained by the reaction of carbon disulfide with urea. By reacting at 120–160°C for 3.5–4 hours, a yield of carbon disulfide oxysulfide of 90%–98% can be achieved, while the yield of ammonium thiocyanate can reach 70%–80%. 3. It is obtained through the reaction of carbon monoxide and sulfur dioxide; charcoal is used as a catalyst, and the reaction temperature ranges from 760 to 980°C. 4. Carbon dioxide and hydrogen sulfide can also be used to produce carbon oxysulfide through a catalytic reaction at 250–400°C and at normal pressure. The catalysts include sodium carbonate, potassium sulfate, etc. Use: Used as an intermediate in organic synthesis; in the pesticide industry, it is used to synthesize herbicides such as atrazine and ocydactin, as well as the insecticide padan.

Carbonyl sulfide (chemical formula: OCS), also known as carbon oxysulfide or sulfocarbene, is a colorless gas with an odor similar to that of rotten eggs under normal conditions. It is an inorganic carbon compound with a structure similar to that of carbon disulfide and carbon dioxide; the gaseous OCS molecule is linear, with one carbon atom bonded to an oxygen atom and a sulfur atom via two double bonds each. Carbonyl sulfide is stable in nature, but it reacts violently with oxidizing agents and can also corrode metals in the presence of moisture. Flammable. It is toxic, but like hydrogen sulfide, it can cause people to underestimate its concentration in the air.

Carbonyl sulfide (chemical formula: OCS), also known as carbon oxysulfide or sulfocarbene, is a colorless gas with an odor similar to that of rotten eggs under normal conditions. It is an inorganic carbon compound with a structure similar to that of carbon disulfide and carbon dioxide; the gaseous OCS molecule is linear, with one carbon atom bonded to an oxygen atom and a sulfur atom via two double bonds each. Carbonyl sulfide is stable in nature, but it reacts violently with oxidizing agents and can also corrode metals in the presence of moisture. Flammable. Toxic

Reply to 1# adsl121: Carbonyl sulfide (chemical formula: OCS), also known as carbon oxysulfide or carbonyl sulfide, is a colorless gas with an odor similar to that of rotten eggs under normal conditions. It is an inorganic carbon compound with a structure similar to that of carbon disulfide and carbon dioxide; the gaseous OCS molecule has a linear shape, with one carbon atom bonded to an oxygen atom and a sulfur atom via two double bonds each