Chemical Materials Thiourea Powder For Electroplating Silver Plating

Thiourea (99% purity, CS(NH₂)₂) is classified as a dangerous chemical with the following properties:

• Appearance: White crystal powder
• Density: 1.405 g/cm³
• Molecular weight: 76.12 g/mol
• Melting point: 171-175°C
• Boiling point: 349-352°F (NTP, 1992)

• Molecular weight: 76.12 g/mol
• Appearance: White or light yellow crystalline powder, glossy
• Odor: Odorless or slight sulphide odor
• Density: 1.405 g/cm³ (20°C)
• Melting point: 176-178°C (decomposition)
• Chemical Safety: Class 6.1 toxic substances
• Solubility: Water (13.7g/100mL at 20°C), slightly soluble in ethanol
• Acid-base properties: Weakly basic, forms salts with acids
• Reducibility: Can be oxidized by oxidants
• Complexation: Forms complexes with metal ions (Ag+, Au+, Cu²+)
• Thermal stability: Decomposes above melting point
• Hydrolysis: Produces urea and hydrogen sulfide under acidic/alkaline conditions

1. Metal Processing and Surface Treatment
   • Electroplating additive for silver, gold, and copper plating
   • Metal surface polishing agent
   • Corrosion inhibitor in metal pickling processes
2. Precious Metals Extraction and Recovery
   • Gold and silver leaching from ores and electronic waste
   • Metal separation and purification through complex formation
3. Chemical Synthesis and Catalysis
   • Pharmaceutical intermediates (anti-thyroid and anticancer drugs)
   • Pesticide synthesis (insecticides, fungicides, herbicides)
   • Dye and pigment production
   • Organic reaction catalyst
4. Rubber and Plastics Industry
   • Rubber vulcanization accelerator
   • Plastic modifier for improved heat resistance and aging properties
5. Textile and Printing Industry
   • Dyeing aid for improved color fastness
   • Printing aid for better fiber adhesion
6. Environmental Protection and Water Treatment
   • Heavy metal removal from industrial wastewater
   • Boiler water deoxidizer
7. Photography and Imaging Industry
   • Photographic developer component
   • Developer stabilizer
8. Laboratory and Scientific Research
   • Analytical reagent for metal detection
   • Masking agent in chemical analysis
9. New Energy and Electronics Industry
   • Battery material for lithium-sulfur batteries
   • Semiconductor processing aid
10. Other Special Applications
    • Synthetic resin modification
    • Antioxidant for chemical protection