Borax[3]
Overview
Borax, chemically known as sodium borate, is a naturally occurring mineral and a key source of boron. It has been used for centuries in various applications, from preserving food to crafting glass. Today, it plays a vital role in industrial processes, household products, and scientific research. Borax is typically mined from evaporated lake beds or produced synthetically from boron-containing minerals. Its versatility stems from its alkaline nature, solubility in water, and ability to form complex compounds. These properties make it indispensable in multiple industries.
Physical and Chemical Properties
Borax appears as a white, odorless crystalline powder with a slightly alkaline taste. Its decahydrate form (Na2B4O7·10H2O) is the most common, containing ten water molecules. When heated, it loses water and transitions to an anhydrous form at higher temperatures. The compound exhibits moderate solubility in water, increasing with temperature. It acts as a buffer in solutions, maintaining a stable pH. Borax also forms boric acid when dissolved in water, which contributes to its antiseptic and flame-retardant properties.
Main Applications
In the glass and ceramics industry, borax serves as a flux, reducing melting temperatures and improving durability. It is a key ingredient in fiberglass and heat-resistant glass. Detergent manufacturers use it to enhance cleaning power and soften water. Borax is also employed in metallurgy as a flux for soldering and welding. In agriculture, it acts as a micronutrient fertilizer and pesticide. Additionally, it finds use in flame retardants, wood preservatives, and as a pH buffer in swimming pools and laboratories.
Safety and Storage
While borax is generally low in toxicity, prolonged exposure can cause skin irritation, respiratory issues, or digestive problems if ingested. Proper personal protective equipment (PPE) such as gloves and masks should be used when handling large quantities. Store borax in a cool, dry place away from acids and moisture. Ensure containers are tightly sealed to prevent caking. For industrial use, bulk storage should be in lined bins or silos to avoid contamination and moisture absorption.
B2B Procurement Guide
When procuring borax, prioritize suppliers with ISO certifications and reliable quality control. Key specifications include purity (≥99.5%), particle size, and moisture content. Packaging options range from 25 kg bags to bulk shipments. Consider transportation and storage requirements, especially for large orders. Price varies based on purity, quantity, and regional availability. Long-term contracts may offer cost advantages for regular buyers. Always verify Material Safety Data Sheets (MSDS) and regulatory compliance for your region.
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