U.S. Borax: Pioneering the elements of modern living

Refined Boron: Essential. Every day. Everywhere.

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Our goal is to improve your quality of life.

We have a nearly 150-year tradition of innovation and a responsible approach to mining, refining, and transforming boron into products that are essential to modern living. From the food on your table to the house you live in to the car you drive and the energy that powers it all—boron is an elemental part of human life and human progress.

Find out how refined boron shapes the way we live today—and the places we’ll go tomorrow.

Borax powder - Food


Through technical innovation and support for global research, borates help farmers around the world more efficiently grow better crops in greater quantities—while protecting the land and those who farm it.

Learn more about how we feed a hunger planet ›
Go directly to the U.S. Borax agriculture web site ›

Rio Tinto


Borates play an important role in modern urbanization through innovative products that support sustainable development, increased human safety, and technological advances.

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Borax powder


Whether from renewable or traditional sources, borates increase the efficiency and safety of energy production. Our products also help to reduce and optimize energy consumption.

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Looking for 20 Mule Team Borax Laundry Detergent Booster?
The Dial Corporation acquired our consumer products division in 1988. Visit the 20 Mule Team Laundry website to find out more.

Visit 20 Mule Team Laundry

20 Mule Team Borax Products

Learn more about 20 Mule Team® Borax products

Ammonium Pentaborate

Whether inhibiting heat, flame, or corrosion, the purity of this alkaline salt makes it an excellent choice. Learn More

Borax Decahydrate

From detergents to dyes to adhesives, this mild alkaline salt does it all, particularly excelling as a buffering and fluxing agent. Learn More

Borogard ZB

Protect wood and wood composites from destroying organisms, rot decay fungi, and subterranean termites. Learn More

Boric Oxide

This pure anhydrous form is ideal where boric acid is required without metals. A powerful tool in the production of specialty glasses, ceramics, enamels, and ... Learn More


This hard, glassy, granular product is excellent when forming flux or glass, where it helps to increase yield and reduce energy consumption. Learn More

Firebrake 500

As a dehydrated zinc borate, Firebrake 500 has numerous applications as a fire retardant and can be fed into extruders, calendars, and injection molding equip... Learn More

Firebrake ZB

This unique zinc borate combines the best of zinc and boron oxides with water release. Use it to develop fire-retardant formulations processable up to 290°C. Learn More

Granubor 2

Granubor 2 is engineered to meet crops’ boron demands when they need it most—during the growing season. Learn More


From reducing melting temperatures in fiberglass production to inhibiting corrosion in fuel additives, Optibor has a multitude of uses in numerous industries. Learn More


With lower transportation, handling, and storage costs, this concentrated sodium borate is used in glass and fiberglass, cleaning products, flame retardants, ... Learn More


Polybor earns its spot in industrial cleaning compounds, fire retardants, and the manufacture of water-treatment chemicals. Learn More

Potassium Pentaborate

This product’s unique capabilities make it ideal for the automotive industry, where its addition to gear lubricants improve load-carrying capacity and wear pr... Learn More

Potassium Tetraborate

An excellent buffering agent, potassium tetraborate can lower the pH of strong alkalis and is also used in welding, soldering, and brazing fluxes. Learn More

Sodium Metaborate

Used in the preparation of starch and dextrin adhesives, this product provides increased viscosity, quicker tack, and better fluidity. In textile processing, ... Learn More


The best choice for foliar fertilizer applications, Solubor is formulated to disperse quickly in liquid, leaves minimal residue, and provides an economical so... Learn More


This industrial, high-performance wood preservative is ideal for protecting rafters, cladding, and joinery against insects and decay. Learn More


Fertibor is the optimum product for suspension in liquid fertilizers and offers easy handling, superior flow, and consistency. Learn More


Boosting crop health: U.S. Midwest
Growers in the U.S. Midwest are seeing higher yields and greater profits thanks to an understanding of the importance of micronutrients, including boron. Hear... Watch video
Supporting Cocoa Farms and Families: Boron for Better Crops and Profits
Even as the market for cocoa expands, Indonesian cocoa farms are struggling to build their crops and profits. The Community Solutions International (CSI) prog... Learn More
U.S. Borax Operations

Living and Working in Kern County

For more than 150 years, U.S. Borax has called Boron, California, home. Discover why we love it here.Read More

Careers at Borax

Looking for a career that matters with a company that cares? Learn about working for Borax, see which positions are available, and discover how to apply.Read More

U.S. Borax, part of Rio Tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. We are 1,000 people serving 500 customers with more than 1,700 delivery locations globally. We supply 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles east of Los Angeles.  Learn more about Rio Tinto

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