99.85% Antimony Ingot
Our versatile mid-purity antimony ingot — refined to a minimum of 99.85% Sb content with tightly controlled impurity levels. The most widely specified grade for antimony trioxide (ATO) production, flame retardant systems, and fine chemical synthesis, balancing high purity with competitive cost efficiency.
Product Specifications
| Antimony (Sb), minimum | 99.85% |
| Lead (Pb), maximum | 0.080% |
| Arsenic (As), maximum | 0.050% |
| Iron (Fe), maximum | 0.020% |
| Copper (Cu), maximum | 0.015% |
| Bismuth (Bi), maximum | 0.003% |
| Sulfur(S), maximum | 0.040% |
| Cadmium (Cd), maximum | 0.001% |
| 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 Sb99.85% Is Used
Flame Retardant Synergists
The primary application for Sb99.85%. Antimony trioxide (ATO) derived from this grade acts as a powerful synergist with halogenated flame retardants in plastics, textiles, and electronics, dramatically improving fire resistance performance across a wide range of consumer and industrial products.
PET Catalyst Production
Antimony trioxide processed from Sb99.85% is the dominant catalyst for polyethylene terephthalate (PET) polycondensation globally. Used in the production of plastic bottles, food-grade packaging film, and polyester fiber — industries that collectively consume hundreds of thousands of metric tons of antimony-derived catalyst annually.
Fine Chemical Manufacturing
A reliable feedstock for the synthesis of antimony pentoxide, sodium antimonate, and a broad range of organoantimony compounds used as stabilizers, catalysts, and specialty reagents across the chemical processing industry.
Lead-Acid Battery Grids
Adding antimony to lead at controlled ratios hardens the electrode grid, improves corrosion resistance at elevated temperatures, and extends battery cycle life. Sb99.85% delivers the purity required for consistent alloying results in both automotive and industrial battery production.
Cable Sheathing & Electrical
Antimonial lead alloys produced from Sb99.85% are widely used as protective sheathing for power cables and telecommunications infrastructure, providing enhanced mechanical durability and resistance to soil corrosion over long service lifespans.
Alloy Hardening & Babbitt Metal
A key hardening agent for antimonial lead alloys used in industrial bearing metals (babbitt), pipe fittings, and corrosion-resistant linings in chemical processing equipment. Sb99.85% delivers the compositional consistency required for repeatable alloy performance.