Borax[4]
Overview
Sodium Borate, known as borax in China, is a naturally occurring mineral and an important industrial chemical. It is primarily sourced from boron-rich deposits and refined for commercial use. The compound is valued for its alkaline properties and versatility across multiple industries. In its decahydrate form, sodium borate appears as white crystalline powder or colorless crystals. It has been utilized for centuries, with historical applications in metallurgy and medicine. Today, it is a key ingredient in modern manufacturing processes.
Physical and Chemical Properties
Sodium Borate exhibits distinct physical and chemical characteristics that make it useful in industrial applications. It dissolves readily in water, forming a mildly alkaline solution. The compound acts as a buffering agent, stabilizing pH levels in various processes. When heated, sodium borate loses its water of hydration, transitioning to an anhydrous form at higher temperatures. This property is exploited in glass and ceramic production. The compound also demonstrates flame-retardant qualities, making it valuable in safety applications.
Main Applications
The glass industry accounts for approximately half of global sodium borate consumption. It lowers the melting point of silica, improving glass quality and thermal resistance. In detergents, sodium borate enhances cleaning power by softening water and stabilizing enzymes. Ceramic manufacturers use sodium borate as a flux to lower firing temperatures. Other applications include metallurgical fluxes, agricultural micronutrients, and as a precursor for other boron compounds. Emerging uses include fire retardants and wood preservatives.
Safety and Storage
While sodium borate has low acute toxicity, proper handling precautions are essential. Workers should use gloves and eye protection to prevent irritation from dust or solutions. Adequate ventilation should be maintained in work areas. The compound should be stored in airtight containers to prevent caking from moisture absorption. Keep away from strong acids and oxidizing agents. Spills should be contained and cleaned promptly with appropriate protective measures.
B2B Procurement Guide
When procuring sodium borate commercially, buyers should specify the desired purity level, typically ranging from 99% to 99.9%. Packaging options include 25kg bags, bulk bags, or customized solutions depending on volume requirements. Quality certifications such as ISO standards and manufacturer compliance with regulatory requirements should be verified. Due to regional variations in boron deposits, buyers may consider sourcing from multiple suppliers for supply chain resilience.
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