Hexahydroxyplatinic Acid (HPA)

A safer and versatile platinum source for catalysis & plating 

Benefit from our product HPA for platinum deposition in heterogeneous catalysis and plating applications

Platinum deposition onto diverse substrate materials enables the production of heterogeneous catalysts for a wide range of chemical reactions and industrial processes. It is also essential for diverse plating applications and surface technologies, such as in the electronics industry and medical applications. Our product HPA, with its unique chemical properties, is gaining attention as a platinum source for specific applications, supporting our customers’ processes and projects. 

What is HPA?

HPA (Hexahydroxyplatinic Acid, H₂Pt(OH)₆, CAS 51850-20-5) is a neutral platinum(IV) compound that does not contain alkali and earth alkali cations, nor anions other than hydroxide. HPA is a significantly less sensitizing platinum compound compared to similar chemicals like Hexachloroplatinic Acid (H₂PtCl₆), reducing the risk of skin and respiratory tract allergic reactions and enhancing production safety.

HPA is an effective precursor for the production of platinum-based heterogeneous catalysts, crucial for several chemical conversions, including hydrogenation reactions and electrochemical reactions. Additionally, HPA serves as a platinum source for conversion into platinum electrolyte solutions used in plating applications, particularly in the electronics industry.

HPA vs. Hexachloroplatinic Acid – a comparison

Unique properties of HPA

The following properties make HPA  an increasingly sought-after choice for platinum deposition:

• Low Sensitization: HPA is a much less sensitizing option than platinum chloride complexes, reducing the risk of allergic reactions upon exposure.
• Versatility: Pt ion-containing solutions made using HPA can impregnate various substrates including carbon and other materials and surfaces. While HPA is not highly soluble in water at room temperature, it dissolves readily in aqueous solutions in the presence of acids or in organic solvents.
• Commercial Availability: HPA is commercially available at Umicore, providing a reliable supply for your industrial needs.

Applications of HPA

HPA is increasingly used for platinum deposition in a variety of high-performance applications, including:

• Heterogeneous catalysis: A critical precursor in the production of platinum-based catalysts for hydrogenation and electrochemcial reactions.
• Plating in the electronics industry: An effective precursor for platinum electrolyte solutions used in high-precision electronic components.
• Medical applications: HPA can be used in specialized coatings and biocompatible surfaces.

HPA - Our product for your success

Why Umicore is the ideal partner

Umicore PMC supplies HPA in flexible quantities suitable for both research projects and industrial production. Our experienced team supports you every step of the way, from prototype development to the realization of large-scale production processes. 

Your benefits of collaborating with PMC:

• Flexibility: We provide delivery in both small and large quantities, ideal for research and industrial production.
• Technical expertise: Our experienced team is available to support you with any questions regarding HPA.
• Quick response times: We offer direct support to ensure your projects are completed on time and efficiently.
• Customized solutions: We offer various models to facilitate your purchase of HPA, tailored to your specific needs. 

Let’s create good chemistry. Together. 

Published articles on HPA:

Preparation of well-dispersed Pt/SiO2 catalysts using low-temperature treatments.
D. Radivojević, K. Seshan, L. Lefferts. Appl. Catal. A 2006, 301, 51-58.
https://doi.org/10.1016/j.apcata.2005.11.016

Speciation of platinum(IV) in nitric acid solutions.
D. Vasilchenko, S. Tkachev, I. Baidina, S. KorenevInorg. Chem. 2013, 52, 10532-10541.
https://doi.org/10.1021/ic401499j

HPA - Our product for your success