Introduction

Borax, chemically known as sodium tetraborate decahydrate (Na₂B₄O₇·10H₂O), is a naturally occurring boron mineral used in numerous industrial and scientific fields. Due to its physicochemical properties, borax is used, among other applications, in the glass and ceramics industry, in metal processing, and as a reagent in laboratories.

This overview presents the key properties, typical applications, and basic safety aspects for handling borax.

Chemical Properties

Composition and Structure

Borax is a hydrated sodium salt of boric acid and exists as a decahydrate. The compound contains sodium, boron, and oxygen atoms as well as water of crystallization, which is crucial for many of its properties.

The structure involves boron in different coordination forms, which influences its chemical reactivity and range of applications.

Physical Properties

• Appearance: white to colorless, crystalline
• Density: approx. 1.7 g/cm³
• Melting point: approx. 743 °C

Borax is easily grindable, allowing for precise dosing in technical processes.

Solubility and Behavior

Borax is soluble in water, with solubility increasing with rising temperature. In aqueous solution, it reacts weakly alkaline and can serve as a buffer component in certain chemical systems.

Typical Applications

Glass and Ceramics Industry

Borax is used as a flux to lower the melting point of raw materials and facilitate processing. It also contributes to improving transparency and chemical resistance.

Metal Processing

In metallurgy, borax serves as a flux in soldering and welding. It aids in the removal of oxide layers and improves the quality of joints.

Cleaning Industry (Technical Applications)

Borax is used as a component in cleaning formulations, particularly to aid in the removal of grease and dirt deposits in industrial applications.

Paper and Textile Industry

In paper production, borax contributes to improved fiber bonding. In the textile industry, it is used, among other things, in dyeing processes to support uniform dye uptake.

Laboratory and Research

In laboratories, borax is used as a chemical reagent, for example in analytical procedures or for the preparation of buffer systems.

Agriculture (Micronutrient)

Boron is an essential trace element for plants. Borax can be used in controlled applications to correct boron deficiency in soil.

Safety and Handling

Borax is a chemical substance that must be handled with appropriate care in accordance with applicable regulations.

Hazard Statements:

• May cause eye irritation
• May damage fertility or the unborn child (H360FD)

Safety Measures:

• Wear suitable protective equipment (gloves, safety glasses)
• Avoid contact with eyes and skin
• Use only in accordance with applicable regulations

Note:
This product is intended for professional users.

Storage

• Store in a dry, well-ventilated place
• Protect from moisture
• Keep in suitable, labeled containers

Conclusion

Borax (sodium tetraborate decahydrate) is a versatile chemical compound with a broad spectrum of applications in industry and research. Its properties make it an important component in technical processes, especially where controlled chemical reactions and material properties are required.

Proper handling in compliance with safety regulations is essential.