Overview
Antimony sheet is a processed form of antimony metal, typically available in thin, brittle sheets. It is derived from stibnite ore and refined to high purity levels for industrial use. Antimony has been utilized since ancient times, but its modern applications are heavily centered on flame retardancy and alloy production. As a metalloid, antimony exhibits properties of both metals and non-metals, making it valuable in specialized applications. Its sheets are often used as raw material for further processing into compounds or alloys, particularly in the electronics and chemical industries.
Physical and Chemical Properties
Antimony sheets are characterized by their silvery-white metallic luster and pronounced brittleness, which requires careful handling during processing. The material has a rhombohedral crystalline structure, contributing to its low ductility and tendency to fracture under stress. Chemically, antimony is relatively stable at room temperature but oxidizes when exposed to air at elevated temperatures. It reacts with halogens and forms compounds with sulfur and oxygen. A notable property is its ability to act as a flame retardant by releasing radicals that interrupt combustion reactions, making it invaluable for safety applications.
Main Applications
The primary use of antimony sheets is in the production of flame retardants, where they are processed into antimony trioxide for textiles, plastics, and electronics. In lead-acid batteries, antimony strengthens lead plates and improves charge efficiency. Another significant application is as a dopant in semiconductor manufacturing, where ultra-high-purity antimony modifies the electrical properties of silicon and germanium. Alloys like pewter and Babbitt metal also incorporate antimony sheets for enhanced hardness and wear resistance.
Safety and Storage
Antimony sheets require careful handling due to their toxicity, particularly when inhaled as dust or fumes. Workers should use NIOSH-approved respirators, gloves, and eye protection during processing. Chronic exposure can affect the respiratory system and skin. Storage should be in sealed containers away from moisture and corrosive substances. Facilities must comply with OSHA and local regulations for heavy metals. Spills should be contained with inert absorbents and disposed of as hazardous waste under RCRA guidelines.
B2B Procurement Guide
When sourcing antimony sheets, prioritize suppliers with ISO 9001 certification and documented traceability of raw materials. Key specifications include purity (typically 99.6% min for industrial use), thickness tolerance, and surface quality. Pricing fluctuates with global antimony markets; long-term contracts may stabilize costs. Logistics should account for antimony's classification as a hazardous material in some jurisdictions. For niche applications like semiconductors, request third-party assay reports to verify ultra-high purity (99.99%+).
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