Borax Decahydrate Granular

Borax Decahydrate Granular – Primary Standard & Fire Assay Flux | GLASSWORLD South Africa

Borax Decahydrate Granular (sodium tetraborate decahydrate, Na₂B₄O₇·10H₂O) is a versatile inorganic boron compound used as a primary standard in analytical chemistry, a flux in fire assay and ceramic applications, and a general-purpose laboratory reagent. Its well-defined composition and high purity make it one of the most important primary standards for standardising hydrochloric and sulphuric acid solutions. GLASSWORLD supplies high-quality borax decahydrate granular to laboratories and industries across South Africa and sub-Saharan Africa.

Key Features

• Primary standard grade available – High purity and stable composition for accurate acid standardisation
• Granular form – Easy handling, weighing, and dissolution compared to fine powder
• Versatile flux reagent – Essential component of fire assay fusion charges for precious metal determination
• Mildly alkaline – Useful as a buffer and pH adjustment reagent
• Available in multiple pack sizes – From laboratory quantities to bulk industrial supply

Applications

• Primary standard for standardisation of HCl and H₂SO₄ solutions (acidimetry)
• Fire assay fusion flux for gold, silver, and PGM determination
• Ceramic and glass manufacturing flux and glaze component
• Soldering and brazing flux in metallurgy
• Buffer solution preparation
• Analytical chemistry and quality control laboratories
• University and teaching laboratory use

Available in primary standard and laboratory grades. Supplied to analytical, mining, ceramic, and industrial customers across South Africa and sub-Saharan Africa. Request a quote for pricing, grade, pack sizes, or bulk orders.

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