Direct-to-chip liquid cooling system for high-performance data center servers

Direct-to-Chip Coolant for Data Center Cooling | Opticool® PG

Tuesday, June 30th, 2026

 Soltex Inc. is excited to spotlight Opticool® PG, our advanced single-phase Direct-to-Chip (DLC) coolant lineup engineered for demanding thermal challenges in high-performance computing. Available in three propylene glycol formulations — PG25, PG35, and PG55 — these coolants deliver exceptional heat transfer, reliability, and sustainability for both internal and external data center cooling loops, including cold-plate applications. 

Whether operating in standard conditions or extreme cold climates, Opticool® PG has you covered. 

  • PG25 (freeze point –11 °C) and PG55 (freeze point –30 °C) are fully compliant with Open Compute Project (OCP) guidelines, ensuring seamless integration into open-hardware ecosystems. 
  • PG35 (freeze point –18 °C) is specially optimized for enhanced performance in colder climates without sacrificing superior cooling efficiency. 

All three variants feature non-corrosive formulations, ultra-low metal content, and outstanding heat-transfer capabilities that reduce chip downtime and extend hardware life, advantages for AI workloads, edge computing, and hyperscale data centers. PG55 goes even further: its low-freeze-point performance also makes it an ideal choice for electric vehicle cooling systems, providing reliable thermal management in the harshest operating environments. 

Key Benefits 

  • Thermal performance in cold-plate and loop systems 
  • Proven OCP compliance (PG25 & PG55) for open ecosystems 
  • Environmentally responsible propylene glycol base 
  • Extended hardware durability and reduced maintenance 
  • Available in drums, totes, and bulk for easy scaling 

Opticool® PG ships crystal clear from the Soltex, Inc. Thermal Fluids Blending Plant in Baytown, TX, offering full visibility into product quality. It can also be custom dyed to your exact color specifications to meet branding or system identification requirements.

Contact Soltex today to learn how Opticool® PG can keep your systems running cooler, longer, and more efficiently at, https://soltexinc.com/contact/. 

Learn more about our Direct to Chip products at, https://soltexinc.com/product-category/products/thermal-fluids/.