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A fundamental part of life on Earth

Educational Video

As one of the chemical elements that make up our planet, boron is all around us—in soil and water, plants and animals—in trace amounts.

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Firebrake for polymer fire retardancy

brochure

U.S. Borax’s products are unique zinc borates that combine the beneficial effects of zinc and boron oxides. Multi-functional fire retardants for polymers, they can be used in applications such as construction products, electrical/ electronics, transportation, fabrics, and industrial coatings.

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Firebrake ZB

data sheet

Firebrake ZB is a unique form of zinc borate with multifunctional fire retardant applications in plastic and rubber compounds.

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Firebrake ZB

specifications sheet

A white, crystalline powder manufactured in the U.S.A. by U.S. Borax Inc.

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Firebrake ZB Fine

brochure

Firebrake ZB Fine is recommended for applications where maximum fire test performance is needed and physical properties are critical.

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Firebrake ZB in coatings

brochure

Firebrake ZB, a boron-based multi-functional pigment, has been used by the coating industry for years.

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Firebrake ZB in elastomers

brochure

Firebrake ZB, a boron-based multi-functional fire retardant, has been used as flame retardant, smoke suppressant, and afterglow suppressant in both halogen-containing and halogen-free elastomers.

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Firebrake ZB in epoxy

brochure

Firebrake ZB is used as a flame retardant, smoke suppressant, and afterglow suppressant in both halogen-free and halogen-containing epoxy, including intumescent coating, adhesives, flooring, glass-reinforced laminates, potting, and encapsulation of electrical components.

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Firebrake ZB in flexible PVC

brochure

Firebrake ZB, is a borate product used extensively as a partial or complete replacement for antimony oxide and other high-cost flame retardants in flexible polyvinyl chloride (PVC).

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Firebrake ZB in polyamides

brochure

Firebrake ZB is used as a multifunctional flame retardant for polyamides in applications such as electrical connectors, bobbins, circuit breaker, housings, transformer components, and encapsulations.

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Firebrake ZB in polyolefins

brochure

Firebrake ZB is used as a flame retardant, smoke suppressant, and afterglow suppressant in both halogen-free and halogen-containing polyolefin, including wire and cable products, electrical parts, appliance components, wall covering, foam insulation, mechanical parts, and roofing membrane.

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Firebrake ZB to replace antimony oxide

brochure

Firebrake ZB is a partial or complete replacement of antimony oxide in flame retardant formulations.

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Firebrake ZB: An alternative to antimony oxide

technical bulletin

This technical bulletin reviews the work that has been done to partially or completely substitute antimony oxide (ATO) with Firebrake ZB in various polymeric systems.

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Industrial U.S. Borax products by application

Industrial U.S. Borax products by application

Brochure

An essential part of industry—and everyday life

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Life depends on boron

Life depends on boron

Brochure

As one of the 109 elements that make up the planet, it’s not surprising that boron is all around us—in soil and water, plants and animals.

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Borate handling and storage

Borate handling and storage

Technical Bulletin

Most borates produced by U.S. Borax are relatively stable materials which are normally supplied in 50 lb or 25 kg bags. All bagged borate products should be hadled with care.

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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 650 customers with more than 1,800 delivery locations globally. We supply around 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles northeast of Los Angeles.  Learn more about Rio Tinto.

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