Thiourea Dioxide (CAS 1758-73-2) is a white crystalline powder that acts as a reducing agent in textile dyeing, paper bleaching for whitening, organic synthesis for decolorization, photography as a fixer, and leather processing. Gives off irritating or toxic fumes (or gases) in a fire.
Typical Properties
| Molecular formula | CH4N2O2S |
|---|---|
| Molecular weight | 108.12 g/mol |
| Appearance | white crystalline powder |
| Form | Crystalline Powder |
| Color | White |
| Melting point | 142-143 °C (decomp) |
| Density | 1.68 |
| Water solubility | 30 g/L (20 °C) |
| pH | 4 (10g/l, H2O, 20°C) |
| GHS signal word | Danger · Flammable, Corrosive, Acute toxicity, Irritant / harmful, Health hazard |
| HS code | 29309070 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Thiourea Dioxide
Applications
Used as reducing agent in textiles dyeing; in paper bleaching for whitening; in organic synthesis for decolorization; in photography as fixer; in leather processing.
Safety & Risks
Precautionary P201 obtain instructions, P273 avoid release to environment, P280 wear protective gear; primary hazards irritant; avoid mixing with other waste.
Packaging
Containers do not contaminate water, foodstuffs, feed or seed; discharge to sewer is not allowed; handle uncleaned like product.