The production method of thiourea dioxide is as follows:

Prepare the reaction vessel: Add distilled water to the reaction pot and stir.

Cooling: Lower the temperature of the reaction pot to 8-10°C using a cold saltwater bath. Ensure the temperature inside the pot remains stable.

Add thiourea: Begin adding thiourea to the reaction pot and slowly drip hydrogen peroxide. Control the dripping speed to maintain the reaction temperature below 20°C.

pH adjustment: After the pH value reaches 3-5, repeat the addition of thiourea and hydrogen peroxide. Ensure the pH value remains stable.

Reaction completion: When the reaction is nearing completion, water can be added to prevent further temperature increase.

Separation and drying: When the pH value reaches 2-3 and the temperature of the mixture drops to around 5°C, transfer the oxidized product to a centrifuge for drying and then dry it in a drying chamber to obtain thiourea dioxide.

It is important to note that the production of 1 ton of thiourea dioxide requires 1 ton of thiourea with 98% purity and 3.4 tons of hydrogen peroxide with 30% concentration. Additionally, thiourea dioxide can also be produced using ozone and thiourea as raw materials or using calcium cyanamide, ammonium sulfide, and hydrogen peroxide as raw materials.

Buske New Material Technology (Shandong) Co., Ltd specializes in the professional production of sulfur dioxide urea. Welcome to inquire. 

Email: buske@buskesd.com,

Phone: +86 0546-8270002.