Can Thiourea Dioxide Completely Replace Hydrosulfite in Stripping?

Not necessarily in every application. The answer depends on dye chemistry, shade depth, fiber type, dye-fiber bonding, pH, temperature, treatment time and the required stripping level.

For example, published work on reactive-dye stripping has shown high removal using sodium hydrosulfite, but also reports fabric-strength losses under aggressive conditions.

Therefore, our recommendation is: do a comparative stripping test before making a full process conversion.