Product name: Thiourea
CAS‑No.: 62‑56‑6
EC/EINECS No.: 200‑543‑5
Synonym: Thiocarbamide, SulfoureaMolecular Formula: CH4N2O4S
Molecular Weight: 76.12 g/mol
Grade: Industrial Grade
Product Description
Thiourea is an organosulfur crystalline compound. It appears as white odourless crystalline powder. It is soluble in water, slightly soluble in ethanol, practically insoluble in ether. It possesses reduction and complex‑forming properties. It serves as a versatile fine‑chemical intermediate widely used in metallurgy, electroplating, pesticide, pharmaceutical synthesis and analytical chemistry.
Physical‑Chemical Properties
Density 1.405 g/cm³
Boiling point 263.1 ℃ (predicted)
pH (50 g/L solution, 20 ℃) 5.0‑7.0
Solubility 137 g/L in water (20 ℃); slightly soluble in ethanol
Stability Hygroscopic; avoid strong oxidants, strong acids
Typical Quality Specifications
| Item | Specification | Test Method |
|---|---|---|
| Appearance | White crystalline powder | Visual inspection |
| Assay, % | ≥ 99.0 | Titration |
| Melting point, ℃ | 170‑176 | Capillary melting‑point apparatus |
| Loss on heating, % | ≤ 0.4 | Oven drying |
| Water‑insoluble matter, % | ≤ 0.10 | Gravimetric method |
| Ash (Residue on ignition), % | ≤ 0.2 | Ignition gravimetry |
| Thiocyanate, % | ≤ 0.02 | Titration |
Applications
Metallurgy & Electroplating: Metal leaching agent, corrosion inhibitor, additive for metal surface treatment.
Pesticide intermediate: Raw material for synthesizing fungicides and herbicides.
Pharmaceutical intermediate: Building block for thiazole‑series APIs.
Analytical chemistry: Complexing reagent for metal ion testing.
Other fields: Photo‑processing auxiliary, resin additive, textile auxiliary agent.
Packaging & Transportation
HS Code: 2930909090
UN‑Number: UN 2811
Hazard Class: Class 6.1 Toxic substance, Packing Group ⅢPackage: 25 kg woven bag with inner PE liner
Storage: Store in cool, dry, well‑ventilated warehouse. Keep tightly sealed to prevent moisture absorption. Separate from oxidants and acids.
Shelf‑life: 24 months under recommended storage.
Hazard Summary
Warning. Toxic solid. May cause skin irritation, serious eye irritation, respiratory irritation by dust inhalation. Harmful if swallowed.
Suspected of causing cancer.
Wear dust‑proof mask, chemical‑resistant gloves and safety goggles during handling.
For complete safety guidance please refer to SDS document.
Disclaimer
All data given is based on present laboratory knowledge for reference purpose only, and shall not constitute product warranty.
End‑users shall verify suitability for their own process and comply with local regulatory requirements.
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