Borax Formula - Meaning. Formula, Resources, Features, Uses, FAQs

Borax Formula - Meaning. Formula, Resources, Features, Uses, FAQs

Team Careers360Updated on 02 Jul 2025, 04:26 PM IST

Borax, chemically known as sodium tetraborate decahydrate (Na2B4O7·10H2O). It is a white crystalline mineral that is highly soluble in water. It is a boron-sodium-oxygen-water compound and forms a structural geometry that accounts for many of its properties. Borax is essentially an alkaline mineral that takes the role of neutralizing acids and often serves as a pH Buffer in many applications.

This Story also Contains

  1. Borax Formula
  2. Structure of Borax
  3. Borax: Various Kinds and Aspects
  4. Real-World Relevance and Applications of Borax
  5. Some Solved Examples
Borax Formula - Meaning. Formula, Resources, Features, Uses, FAQs
Borax Formula

Borax Formula

The molecular formula of Borax is Na2B4O7.10H2O. Its chemical name is Sodium borate. Where,
Na is Sodium
B is Boron
O is Oxygen,
H is Hydrogen
And Subscripts indicate the number of atoms of the respective element in the compound.

This is a very old compound, known since ancient times, with ancient civilizations knowing its cleansing and preservative properties. In the present day, major applications of Borax include being a cleaning agent, laundry booster, and pest control solution. It softens water so much that it is used in cleaning applications, which provides the maximum utility of detergents. It is an antifungal and a bacteria, which explains its use in cleaning as well.

It is the most important compound of Boron. It is a white crystalline solid of formula Na2B4O7⋅10H2O. In fact, it contains the tetranuclear units [B4O5(OH)4]2-and correct formula; therefore, is. Borax dissolves in water to give an alkaline solution.

Na2B4O7+7H2O→2NaOH+4H3BO3

On heating, borax first loses water molecules and swells up. On further heating, it turns into a transparent liquid, which solidifies into the glass-like material known as a borax bead.

Na2B4O7⋅10H2O→ΔNa2B4O7→Δ2NaBO2+B2O3

The metaborates of many transition metals have characteristic colors and, therefore, the borax bead test can be used to identify them in the laboratory. For example, when borax is heated in a Bunsen burner flame with CoO on a loop of platinum wire, a blue colored
Co(BO2)2 bead is formed.

Structure of Borax

borax structure



Borax: Various Kinds and Aspects

Though most people may only be familiar with the common, powdered form of Borax, in reality, there are a number of types and formulations of the mineral to best serve its purpose. One of the most common forms is that of the decahydrate, which physically holds ten molecules of water; however, the Borax also exists in anhydrous forms that do not contain water and are primarily used for industrial applications.

Apart from this, Borax is also available in numerous combinations and products that are manufactured for numerous performances. For instance, a common constituent of most laundry detergents is Borax—a water softener and stain remover. It's an element of the cream that provides cleaning of mold and mildew—fully exploiting its antifungal features. In DIY projects, Borax is highly utilized in the making of slime, and it is a fun activity to have kids involved since it's a learning process; it introduces simple chemical reactions.

It is observed that borax is not just any other house substance; the mineral plays an active role in agriculture as one of the micronutrients for plants in boron-deficient soils. That explains how high, in terms of importance, the compound is, and versatile to be high in importance both in domestic activities and commercially oriented areas.

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Real-World Relevance and Applications of Borax

The many real-world applications of Borax range from household cleaning to scientific research. Many people rely on Borax as their partner in cleaning their houses. After all, it can be added to laundry to make it more efficient and actually possesses qualities that make it an excellent stain remover and odor eliminator while softening water. One of the most preferred alternatives for households with eco-friendly cleaning solutions is to just mix Borax with water to create enough solutions that can clean off heavy dirt on surfaces.

Borax is a very promising insecticide when it comes to pest control against cockroaches and ants. This will dehydrate their digestive systems upon consumption and thus kill the pests that way. Favoritism is thus done with the fact that this kind of pest control is more favorable compared with those that are chemically based; thus, Borax is often the in thing when one wishes to curb exposure to hazardous chemical substances.

This variety is vastly used at school to explain loaded concepts, such as solubility, pH, and chemical reactions. This is because the variety is not dangerous and is considered the perfect variant to execute educational experiments. For example, making slime with Borax and glue is a cool way for children can access polymer chemistry and the qualities of non-Newtonian fluids.

Recommended topic video on (Borax Formula)

Some Solved Examples

Example 1
Question:
What is the chemical formula of the borax bead?
1) Na₂B₄O₇
2) Na₂BO₃
3) NaBO₂ + B₂O₃ (correct)
4) NaBO₂

Solution: The borax bead is formed primarily from sodium metaborate (NaBO₂) and boric anhydride (B₂O₃) when borax is heated. Therefore, the correct answer is option (3).

Example 2
Question
: Which of the following ions can be detected by the borax bead test?
1) Ni⁺
2) Co²⁺
3) Pb²⁺
4) Both a and b (correct)

Solution: The borax bead test is used to identify colored basic radicals, specifically transition metals. Both nickel (Ni²⁺) and cobalt (Co²⁺) can be detected using this method. Therefore, the correct answer is option (4).

Example 3
Question:
What is the color of cobalt metaborate?
1) Blue (correct)
2) Brown
3) Pink
4) Red

Solution: Cobalt metaborate, formed during the borax bead test, exhibits a distinct blue color. Hence, the correct answer is option (1).

Example 4
Question:
What products are formed when BCl₃ reacts with water?
1) B₂O₃ + HOCl
2) H₃BO₃ + HCl (correct)
3) B₂H₆ + HCl
4) No reaction

Solution: When boron trichloride (BCl₃) undergoes hydrolysis with water, it produces boric acid (H₃BO₃) and hydrochloric acid (HCl). Therefore, the correct answer is option (2).

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Frequently Asked Questions (FAQs)

Q: What is the role of borax in the production of boron carbide?
A:
Borax can be used as a starting material in the production of boron carbide, one of the hardest materials known. The
Q: How does borax contribute to the properties of enamel coatings?
A:
Borax is used in some enamel formulations to improve the adhesion, hardness, and chemical resistance of the coating. It acts as a flux during the firing process and becomes incorporated into the glass structure of the enamel. This application showcases the role of borax in materials engineering and surface chemistry.
Q: What is the role of borax in the production of fertilizers?
A:
Borax is used in the production of boron-containing fertilizers. Boron is an essential micronutrient for plants, and borax provides a controlled way to add boron to soil. This application demonstrates the importance of understanding the biological roles of chemical elements.
Q: What is the significance of borax in the context of superconductor research?
A:
Boron compounds, including those derived from borax, have been studied in the context of superconductor research. Some boron-containing materials exhibit superconductivity at relatively high temperatures. This area of research demonstrates the ongoing importance of exploring new materials and their electronic properties.
Q: How does borax behave under high pressure conditions?
A:
Under high pressure, borax undergoes structural changes that can affect its properties. These changes can include alterations in crystal structure and bonding arrangements. Studying the high-pressure behavior of borax provides insights into the fundamental principles of solid-state chemistry and materials under extreme conditions.
Q: What is the role of borax in the production of ceramic glazes?
A:
Borax is used in ceramic glazes as a flux, lowering the melting point of the glaze mixture and promoting glass formation. It also affects the thermal expansion, durability, and appearance of the glaze. This application illustrates the importance of understanding high-temperature chemistry and materials science.
Q: How does borax interact with heavy metals in environmental systems?
A:
Borax can form complexes with certain heavy metals, potentially affecting their mobility and bioavailability in soil and water systems. This property has implications for environmental remediation and the fate of heavy metals in ecosystems. It demonstrates the importance of considering boron chemistry in environmental science.
Q: What is the significance of borax in geothermal energy systems?
A:
In geothermal energy systems, borax and other boron compounds can be present in geothermal fluids. They can affect the chemistry of these systems, potentially leading to scaling or corrosion issues. Understanding the behavior of borax in high-temperature, high-pressure environments is crucial for managing geothermal resources.
Q: How does borax contribute to the preservation of wood?
A:
Borax is used as a wood preservative due to its ability to prevent fungal growth and deter wood-boring insects. It penetrates the wood and remains stable over time. This application showcases borax's role in materials conservation and its interaction with biological systems.
Q: What is the role of borax in the production of optical fibers?
A:
Borax is a source of boron oxide used in the production of borosilicate glasses, including those used for optical fibers. The addition of boron modifies the refractive index and other optical properties of the glass. This application demonstrates the importance of borax in advanced materials and telecommunications technology.