99.90% Antimony Ingot
Our highest-purity antimony ingot — refined to a minimum of 99.90% Sb content with strictly controlled impurity thresholds. The preferred grade for semiconductor fabrication, optical glass production, and specialty chemical synthesis where trace contamination cannot be tolerated.
Product Specifications
| Antimony (Sb), minimum | 99.90% |
| Lead (Pb), maximum | 0.050% |
| Arsenic (As), maximum | 0.010% |
| Iron (Fe), maximum | 0.015% |
| Copper (Cu), maximum | 0.005% |
| Bismuth (Bi), maximum | 0.001% |
| Sulfur(S), maximum | 0.040% |
| Cadmium (Cd), maximum | 0.0005% |
| Atomic Number | 51 |
| Melting Point | 630.74 °C |
| Density | 6.697 g/cm³ |
| Crystal Structure | Rhombohedral |
| Form | Ingot Block |
| Net Weight per Block | 20 - 22 kg |
| Stacking per Pallet | 40 blocks = 1 T |
| Packaging | Shrink-wrapped, strapped |
Where Sb99.90% Is Used
Semiconductor Manufacturing
Indium antimonide (InSb) and gallium antimonide (GaSb) compounds require the highest-purity antimony feedstock. Even sub-ppm impurities can compromise carrier mobility and device performance.
Optical Glass & Optics
Used as a fining agent and decolorizer in specialty glass manufacturing. The 99.90% grade is specified to avoid color or clarity defects caused by trace metal impurities in precision optical components.
Specialty Chemical Synthesis
Premium-grade antimony feedstock for antimony trioxide (ATO), antimony pentoxide, and organoantimony compounds used in catalysis, stabilizers, and advanced materials chemistry.
Defense & Advanced Electronics
Military-grade infrared sensors, night-vision optics, and missile guidance systems rely on high-purity InSb substrates — making Sb99.90% a strategically critical material for defense supply chains.
Next-Gen Energy Storage
Emerging antimony-based redox flow battery technologies require high-purity antimony electrolyte precursors. Sb99.90% is positioned as the ideal feedstock for this growing segment of grid-scale energy storage.
PET Catalyst Production
Antimony trioxide derived from Sb99.90% is the most widely used catalyst for polyethylene terephthalate (PET) polycondensation — the resin behind plastic bottles, packaging film, and polyester fiber globally.