Description

Thiourea Dioxide (CAS NO 1758-73-2) is a powerful, versatile reducing agent known for its high stability in alkaline solutions and its ability to generate sulfoxylate ions. This compound is critical for industrial processes requiring a clean, controllable, and efficient reduction without generating hazardous by-products. It is essential for manufacturers in the textile, paper, polymer, and fine chemical synthesis industries seeking to improve product quality and process safety.

Application

• Textile Processing: Primary use as a stripping and discharging agent for vat and sulfur dyes, and as a reducing agent in wool bleaching and shrink-proofing.
• Pulp & Paper Industry: Used as a brightening and reductive bleaching agent for mechanical and recycled pulp to achieve high brightness levels.
• Polymer & Synthesis: Serves as a reducing agent and initiator in polymerization reactions and in the synthesis of pharmaceuticals and agrochemical intermediates.
• Water Treatment: Acts as a dechlorinating agent and oxygen scavenger in boiler feed water and industrial wastewater systems.
• Photography: Employed in photographic developing solutions as a reducing agent.
• Leather Processing: Used in the bleaching and tanning processes for leather.
• Metal Recovery & Plating: Applied in electroless plating and for the recovery of precious metals from solutions.
• Cosmetics: Functions as a reducing agent in certain hair treatment formulations.

Basic Information

Product Name	Thiourea Dioxide
CAS No.	1758-73-2
Molecular Formula	CH4N2O2S
Molecular Weight	108.12 g/mol
Synonyms	Formamidine Sulfinic Acid; Aminoiminomethanesulfinic Acid; TDO; Thiourea-S,S-dioxide; Sulfoxylate Formamidine; Reductone; Reducing Agent FM
EINECS	217-157-8

Quality Control

Our Thiourea Dioxide is manufactured under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, reactivity, and physical properties. Certificates of Analysis (COA) documenting key parameters such as assay, moisture content, and solubility are provided to guarantee batch-to-batch consistency and compliance with your application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and incompatible materials. This product is hygroscopic (moisture-sensitive) and should be kept under dry conditions to prevent caking and decomposition. Long-term storage is recommended at temperatures below 25°C (77°F).

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.1 %
Solubility (in water)	Clear, colorless solution
pH (1% solution)	4.0 - 6.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.