Thiourea Dioxide

Thiourea dioxide(TDO/TUDO)

Physical and chemical properties
CAS No.1758-73-2
Synonym: Thiourea S,S-dioxide
Appearance White or light-yellow odorless crystalline powder
Molecular formula CH4N O S
Molecular weight 108.12
Mp 126

Specification
Item Standard
Purity (%) 99.0
Thiourea (%) 0.10
Moisture (%) 0.05
Fe(ppm) 10
Sulfate (%) 0.17

Applications:

Textile Printing and Dyeing Industry
Reducing & Bleaching Agent
Used for reductive bleaching of cotton, hemp, silk, and other fibers to remove pigments and impurities, improving fabric whiteness.
Decolorizing Agent
Treats post-dyeing wastewater to reduce color intensity.


Vat Dyeing
Acts as a reducing agent for vat dyes, helping dissolve dyes and facilitating fiber dyeing.

Paper Industry
Pulp Bleaching
Replaces traditional chlorine-based bleaching agents (more eco-friendly) to enhance pulp whiteness.
Deinking of Waste Paper
Assists in removing ink from recycled paper, promoting paper recycling.

Chemical Synthesis
Organic Synthesis
Serves as a mild reducing agent in reduction reactions (e.g., converting nitro compounds to amino compounds).
Pharmaceutical Intermediates
Used in synthesizing certain drugs or fine chemicals.

Water Treatment
Wastewater Treatment
Reduces heavy metal ions for easier removal.
Dechlorination
Eliminates residual chlorine in water.

Other Applications
Cosmetics
Used in a few products as a mild bleaching or antioxidant agent.
Laboratory Reagent
Applied in analytical chemistry for reduction reactions.
Rubber Industry
Functions as an additive to improve rubber properties.


Features:
Thiourea Dioxide is a new environmental-friendly agent,formaldehyde-free & odorless, which can be used to replace Sodium Hydrosulfite. It has better thermal stability and stronger reducing ability. Operation is simple and effective. Transportation and storage are convenient. 

Packaging
25Kg plastic woven bags;
25Kg kraft paper bags;
50Kg fiber drums;
80Kg pp woven IBC bags;
500Kg/1000Kg FIBCs.
Special packing is also available upon request.

Storage
Store in dry, clean, well-ventilated warehouse,with a room temperature blow 30, avoid moisture and direct sunlight exposure.