Thiourea Dioxide

Thiourea Dioxide
Product Name: Thiourea Dioxide
Common Alias: Formamidine Sulfinic Acid, TDO
CAS No.: 1758-73-2
Molecular Formula: CH₄N₂O₂S
Molecular Weight: 108.12
Purity: 99% Min
Appearance: White odorless crystalline powder, pure and uniform, stable physical and chemical properties
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Email:howard@yongyuechemical.com
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Typical Properties

Product Specifications

Thiourea Dioxide (TDO) is a new type of high-efficiency and environmentally friendly reducing agent. It is an ideal substitute for traditional sodium dithionite (hydrosulfite), with higher stability and better reduction performance.


ItemStandard Specification
Thiourea Dioxide Content≥99.0%
Moisture≤0.3%
Ash Content≤0.1%
Melting Point126℃ (decomposition)
SolubilitySlightly soluble in cold water, easily soluble in hot water; insoluble in ethanol, ether and benzene

- Strong Reducing Power: Higher reduction activity than traditional sodium dithionite, excellent decolorization and stripping effect, lower dosage and higher efficiency.

- Excellent Thermal Stability: Stable at room temperature, not easy to decompose below 100℃, safe and convenient for storage and industrial application.

- Eco-friendly & Safe: No peculiar smell, no harmful residues, no secondary pollution during use, compliant with modern environmental protection production standards.

- Low Loss Rate: Non-deliquescent and stable in storage, effectively reducing inventory and transportation loss.

Main Applications

- Textile Printing & Dyeing: Widely used for reduction dyeing, fabric bleaching, color stripping and color correction for cotton, wool, silk and linen textiles. It effectively removes color defects without damaging fabric fibers.

- Paper Industry: Used as pulp bleaching and decolorizing agent to improve paper whiteness and optimize paper texture.

- Fine Chemical Industry: Serves as reducing agent and antioxidant in organic synthesis and chemical processing.

- Other Industries: Applied in electroplating auxiliary, plastic stabilizer, photosensitive material decolorizer and other industrial fields.

Packaging Details

- 25KG / Bag: Moisture-proof woven bag packaging, suitable for regular bulk orders

- 50KG / Drum: Sealed drum packaging, better tightness, suitable for long-term storage and long-distance transportation

Custom packaging is available upon request. Sufficient stock and fast delivery.


Experimental testing
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Packing and shipping
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