Sodium fermetate
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That expert has the production process flow and process control parameters for thiram
First, pour the measured water into the reaction vessel, start the stirrer, and open the cooling water valve at the same time. Then, 40% industrial dimethylamine is added to the reaction vessel; after adding the dimethylamine, the valve is closed and stirring continues for 10–15 minutes before carbon disulfide is prepared to be added drop by drop. Slowly open the carbon disulfide feeding valve to start adding carbon disulfide into the reaction vessel. During the condensation reaction, carbon disulfide and dimethylamine release heat, causing the reaction temperature in the reactor to rise. It is necessary to monitor the reaction temperature continuously, adjust the amount of cooling water used, and keep the reaction temperature at or below 35°C, with a maximum limit of 40°C.
When should the alkali be added? Should I add it in advance?