Synano NanoCoolant™ PG

Alumina nano-enhanced propylene glycol coolant. Available in six concentrations: 10, 20, 25, 30, 40, and 50% v/v.

Pre-treatment agent is added automatically at 20% of your volume. You can remove it in the basket.

€0.00

Synano NanoCoolant™ PG is a ready-to-use propylene glycol and water heat transfer fluid enhanced with aluminum oxide (Al₂O₃) nanoparticles. Available in six concentration variants from 10% to 50% v/v, it covers direct-to-chip data center cooling, industrial process loops, HVAC chilled water systems, and any closed-loop application where a conventional PG coolant is currently in use.

Developed by Synano’s thermal engineering team, building on research at Delft University of Technology, the formulation combines a proven PG base with alumina selected for its chemical stability, established non-toxicity, and superior thermal properties relative to alternative nanomaterials.

Compared to an equivalent conventional PG-water mixture, Synano NanoCoolant™ PG transfers more heat at lower pressure drop. Thermal conductivity increases by up to 6.5% across all concentrations while dynamic viscosity simultaneously decreases by up to 2.7%. The combined effect yields a 5 to 7% improvement in convective heat transfer coefficient under forced laminar flow, without modifying the heat exchanger, without increasing pump power, and without changing operating procedures.

REACH compliant, non-hazardous under EU CLP, and validated to ASTM D1384. Proven across more than five years of testing.

Features & Benefits

Nano-enhanced thermal conductivity

Up to 6.5% higher thermal conductivity than conventional PG-water blends across all concentrations. More heat removed at the same flow rate.

Lower viscosity than base fluid

Dynamic viscosity falls by up to 2.7% compared to the equivalent base fluid. Less pump work, lower pressure drop, easier flow through cold plates and tight geometries.

Corrosion protection. ASTM validated.

Validated against six metals to ASTM D1384 at 88°C over 336 hours. Corrosion inhibitor package tuned specifically for the alumina formulation. Compatible with aluminum, copper, brass, and stainless steel.

Permanent suspension stability.

Stable in both static and flow conditions. Less than 5% sedimentation over five years of monitored static storage. Survives freeze-thaw without permanent settling.

Standard components.

Works with standard pumps, cold plates, seals (EPDM, Viton, silicone, nitrile), and common metals. No redesign needed. Flush the loop with Synano Pre-Treatment Agent before filling.

Non-toxic. Biodegradable. Recyclable.

Non-toxic, non-flammable, non-carcinogenic, non-bioaccumulative. Synano operates a spent-fluid take-back program for nanoparticle recovery and glycol recycling.

Technical specifications

All values measured to ASTM standards. Thermal conductivity and TC improvement shown are averages across the operating temperature window (25°C to 55°C). Viscosity and density reference values are at 40°C. Values shown are for the nano-enhanced fluid.

Concentration Thermal conductivity (mW/m·K) Dynamic viscosity (cP) Density (kg/m³) Freeze point (°C) Boil point (°C) Average TC improvement vs. base (25–55°C)
20% PG 536 1.18 1,011 −7 100.5 +5.1%
25% PG 519 1.40 1,021 −10 101.2 +6.3%
30% PG 485 1.60 1,020 −13 102.2 +5.4%
40% PG 437 2.17 1,028 −22 103.8 +5.9%
50% PG 388 3.50 1,028 −35 105.5 +5.0%

Specific heat capacity ranges from 4,047 J/kg·K at 20% to 3,656 J/kg·K at 50% v/v.

Need help selecting the right concentration? Contact us to estimate performance improvement for your system.

Additional properties

Values

Nanoparticle material
Aluminum oxide (Al₂O₃)
Nanoparticle size (avg)
100 nm
pH range
<7
Operating temperature
−35°C to +106°C, concentration-dependent
Compatible materials
Aluminum, copper, brass, stainless steel (304/316)
Compatible seals
EPDM, Viton (FKM), silicone, nitrile (NBR)
Compatible polymers
PTFE, PVC, nylon, polypropylene
Incompatible materials
Strong acids, strong bases, oxidising agents, salts
Corrosion protection
Yes. Inhibitor package tuned for alumina formulation
Toxicity
Non-toxic, non-flammable, non-carcinogenic, non-bioaccumulative
Shelf life
5+ years
Regulatory
EU REACH compliant. Non-hazardous under CLP. ASTM D1384 validated
Recycling
Spent-fluid take-back program. Nanoparticle recovery and glycol recycling

Usage & Applications

Synano NanoCoolant™ PG is designed for closed-loop thermal management. Select the concentration for your application.

Applications

Data center
(Direct liquid cooling)

20 – 25% conc: Higher heat transfer at the lowest pump power. The preferred range for direct-to-chip and cold-plate loops with freeze protection requirements.

Industrial process cooling

25 – 40% conc: Non-toxic, non-flammable, and compatible with food-adjacent and pharmaceutical environments where EG-based coolants cannot be specified.

HVAC chilled water and building services

40 – 50% conc: Freeze protection to −22°C or −35°C. Improved coil efficiency versus conventional PG blends at the same concentration.

How to use

Synano NanoCoolant™ PG is supplied ready to use at the selected concentration. No dilution or mixing required.

Pre-treatment of the system loop is mandatory before filling. Flush with Synano Pre-Treatment Agent to remove residual chemicals, metallic ions, and prior inhibitor packages.

Flush with demineralized water and drain. Fill at the required concentration. After commissioning, no further fluid maintenance is needed.

Handling & Safety

Non-toxic and safe to handle under standard industrial conditions. Wear nitrile gloves during handling. Flush any skin or eye contact with water. Store sealed in a cool, dry, ventilated area between 5°C and 40°C.

Full handling and disposal guidance in the Synano SDS, EU REACH compliant, Revision 1, September 2025.

Synano NanoCoolant™
PG Datasheet (TDS)

Synano NanoCoolant PG datasheet. All concentrations. Full thermophysical data, corrosion validation, system integration guide, and packaging options.

Packaging options

Available in 1 L bottles, 5 L jerry cans, 20 L drums, 200 L barrels, and 1,000 L IBCs.

Custom concentrations from 10 to 60% v/v and bespoke nanoparticle loadings available on request.

Ready to upgrade your PG cooling loop?

Contact us for pricing, a sample, or to match the right concentration to your system. Our technical team supports integration from selection through commissioning.