Why Would a Textile Factory Switch from Sodium Hydrosulfite?

The main reasons are usually:

1. Strong reducing performance — Thiourea Dioxide can provide strong reduction under suitable alkaline/high-temperature conditions.

2. Better process stability under appropriate conditions — sodium hydrosulfite is well known to be sensitive to decomposition, particularly once dissolved.

3. Lower effective dosage may be possible — because Thiourea Dioxide has strong reducing capability, the required mass dosage can be substantially lower in some processes.

4. Easier handling and storage potential — the actual advantage depends on product grade, formulation and packaging, but Thiourea Dioxide is often considered when customers want an alternative to hydrosulfite handling.

5. Potential chemical-cost optimization — the relevant comparison is not $/kg, but chemical cost per tonne of finished fabric. This distinction is critical.