Boron in Pharmaceutical Use


The pharmaceutical industry is highly regulated and EP grade products manufactured at our Coudekerque, France facility:

  • Conform to the current edition of the European Pharmacopoeia (EP)
  • Are in full compliance with the Good Manufacturing Practice (GMP) guidelines (ICH-Q7)
  • Conform to CEP (Certificate of Suitability) certification of the European Directorate for the Quality of Medicines (EDQM)

Our CEP certification allows our customers to easily administer their Marketing Authorization Applications (MAA) for the medicines that they produce which incorporate EP grade products as starting materials in the pharmaceutical production process.

Our entire process including manufacturing, laboratory, packaging, storage, and distribution is documented to comply with GMP guidelines.

Every day eye care application

Eyedrops (artificial tears) are used to moisturize irritated eyes, remove redness, or relieve the itching associated with allergies and colds. Both Borax Decahydrate EP/NF and Optibor EP/NF/3C are frequently added in small quantities to these products, to help control pH and retain moisture. Sterile saline solutions for contact lenses are often buffered with small quantities of these 20 Mule Team® Borax products, which are also included in lens rewetting drops that can make the lenses more comfortable to wear.

Distributors and end use customers are encouraged to consult our product label as well as all applicable regulations and standards to ensure compliance with all directions of use, caution statements, product safety and laws governing the use of these products. It is incumbent upon distributors and customers to ensure compliance, dependent upon end use. U.S. Borax will not be responsible or liable for any non-compliant or inappropriate use.

Borax Decahydrate EP and Optibor® EP are only sold in European Union (EU) markets while Borax Decahydrate NF and Optibor NF are only sold outside of the EU.

Contact lens solution  

For more guidance on regulations and standards, visit Product Stewardship.

20 Mule Team Borax Products

These 20 Mule Team Borax products are developed for pharmaceutical use.

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

Optibor boric acid

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


When it comes to particulate materials, particle size affects end product quality and properties. U.S. Borax offers many of its products in powder grade. Learn More

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Coudekerque Facility Sets the Quality Standard for Specialty Borates
To ensure that manufacturers can trust the quality and consistency of the products they receive, our Coudekerque facility has developed a highly-specialized q... Learn 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 northeast of Los Angeles.  Learn more about Rio Tinto.

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