Sodium tetraborate pentahydrate

Sodium tetraborate pentahydrate

CAS No.: 12179-04-3
Molecular Formula: 12179-04-3
Molecular Weight: 291.3
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product description

Sodium Tetraborate Pentahydrate is a white crystalline solid, soluble in water and weakly alkaline. It has excellent buffering, corrosion-inhibiting and flame-retardant properties. It is widely used in glass and ceramic production, detergents, cosmetics, metal treatment, fertilizers and flame retardants.


Chemical Properties

PropertyValue
Density1.815
PSA138.42000
LogP-2.42430
Solubility38 g/L at 20 °C in water
AppearanceWhite, odorless crystalline or free-flowing powder
Chemical PropertiesBorax is a noncombustible (an inherent fire retardant), bluish-gray or green, odorless crystalline powder or granules.
ColorWhite, odorless crystalline or free-flowing powder
Physical FormWhite crystalline powder
Storage TemperatureStore at room temperature, keep dry and cool


Safety Information

PropertyValue
Occupational Exposure CategoryC
Occupational Exposure LimitTWA: 1 mg/m³


Product Usage

Sodium Tetraborate Pentahydrate, also known as Borax Pentahydrate, is a highly efficient and versatile borate widely used in modern industry due to its excellent chemical stability and solubility. In the glass and ceramics industry, it is a key raw material for manufacturing heat-resistant glass, fiberglass, and glazes, significantly reducing melting temperatures while enhancing impact resistance and chemical durability. In the detergent sector, it possesses superior stain removal, pH buffering, and water-softening capabilities, making it a common ingredient in high-performance laundry liquids and multi-purpose cleaners. Additionally, it serves as a micronutrient fertilizer in agriculture to prevent boron deficiency in crops and acts as a flux in metallurgy, while playing a vital role in wood preservation and flame retardant materials.

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3. By Train, suit for middle Asia countries.
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