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 hungry planet ›
Go directly to the U.S. Borax agriculture website ›

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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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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

Boric Oxide

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

Borogard ZB

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


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


These products are unique zinc borates combining the best of zinc and boron oxides that can be used to develop fire-retardant formulations. Learn More


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


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


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

Potassium Pentaborate

Unique capabilities make it ideal for the automotive industry, where its addition to gear lubricants improve load-carrying capacity and wear protection. 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

Provides increased viscosity, quicker tack, and better fluidity in starch and dextrin adhesives. Helps stabilize hydrogen peroxide solutions and neutralize ac... Learn More

Sodium Pentaborate

Used primarily in oilfield drilling, sodium pentaborate provides lubrication and stabilization in wells and downhole drilling. Learn More


Used for foliar fertilizer applications: Formulated to disperse quickly in liquid, leave minimal residue, and provide an economical boron source. Learn More


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

Looking for 20 Mule Team Borax Laundry Detergent Booster?
The Dial Corporation acquired U.S. Borax’s consumer products division in 1988. Subsequently, Henkel acquired Dial in 2003. Visit the 20 Mule Team Laundry website to find out more.

Visit 20 Mule Team Laundry


U.S. Borax featured in upcoming Jay Leno’s Garage episode
Legendary comedian and “Tonight Show” host Jay Leno gets behind the wheel of a 240-ton haul truck at U.S. Borax’s mining operation in the Ja... Learn More
Boron: Helping feed the world
Agriculture needs to become increasingly efficient to feed a growing population. As an essential element for crop growth, boron has a vital role to play. Watch video
Borate Wood Protection in High Humidity
You can help to protect homes and other wooden structures in humid regions from fungi, algae, and other threats. The key? Borates and continuous, innovative r... 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 U.S. Borax

Looking for a career that matters with a company that cares? Learn about working for U.S. 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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