{"meta":{"title":"Immersion Cooling Fluids for Bitcoin Miners \u2014 Dielectric Coolant Reference","description":"Machine-readable reference of 12 dielectric fluids used for single-phase and two-phase immersion cooling of Bitcoin ASIC miners, with dielectric strength, viscosity, flash\/pour\/boiling points, thermal conductivity, density and global-warming potential.","generated":"2026-08-16T17:02:54+00:00","version":"1.0","license":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","license_name":"CC BY 4.0","source":"https:\/\/d-central.tech\/immersion-cooling-fluids\/","record_count":12,"disclaimer":"Values are the typical figures published on each manufacturer's technical data sheet or safety data sheet; test methods and reference temperatures vary by vendor (noted in cells where they differ). Dielectric strength gaps differ (0.1 in vs 2.5 mm) and are not directly comparable. Mineral-oil figures are representative ranges, not one product. Always confirm against the current datasheet before designing a system."},"rows":[{"name":"BitCool BC-888","manufacturer":"Engineered Fluids","fluid_type":"single-phase synthetic hydrocarbon","dielectric_strength_kv":">40 (0.1in gap)","kinematic_viscosity_cst_40c":"","flash_point_c":"201","pour_point_c":"-65","thermal_conductivity_w_mk":"0.135","density_g_cm3":"0.80","boiling_point_c":"","gwp":"Low (hydrocarbon)","typical_use":"Single-phase full immersion of ASIC miners; mining-specific formulation","source_url":"https:\/\/www.engineeredfluids.com\/bitcool"},{"name":"Shell Immersion Cooling Fluid S3 X","manufacturer":"Shell","fluid_type":"single-phase synthetic hydrocarbon","dielectric_strength_kv":"","kinematic_viscosity_cst_40c":"9.9","flash_point_c":"198","pour_point_c":"<=-42","thermal_conductivity_w_mk":"","density_g_cm3":"0.808","boiling_point_c":"","gwp":"Low (hydrocarbon)","typical_use":"Single-phase immersion of servers and ASIC miners; Gas-to-Liquid (GTL) base oil","source_url":"https:\/\/www.shell.com\/business-customers\/industrial-lubricants-and-specialty-fluids-for-business\/immersion-cooling-fluids.html"},{"name":"Castrol ON Immersion Cooling Fluid DC 20","manufacturer":"Castrol","fluid_type":"single-phase synthetic hydrocarbon","dielectric_strength_kv":">35 (DIN EN 60156)","kinematic_viscosity_cst_40c":"5.1","flash_point_c":"159","pour_point_c":"-75","thermal_conductivity_w_mk":"0.139","density_g_cm3":"0.797","boiling_point_c":"","gwp":"Low (hydrocarbon)","typical_use":"Single-phase Hashcenter \/ ASIC immersion; low viscosity, high specific heat","source_url":"https:\/\/www.castrol.com\/content\/dam\/castrol\/business-sites-new\/en\/global\/corporate\/documents\/industries\/data-centre-cooling\/Castrol-ON-immersion-cooling-fluid-DC-20-product-data.pdf"},{"name":"Technical \/ White Mineral Oil (representative)","manufacturer":"Various (naphthenic \/ paraffinic)","fluid_type":"single-phase mineral oil","dielectric_strength_kv":"30-70 (dry\/treated)","kinematic_viscosity_cst_40c":"12-30","flash_point_c":"135-200","pour_point_c":"-30 to -60","thermal_conductivity_w_mk":"~0.13","density_g_cm3":"0.86-0.88","boiling_point_c":"","gwp":"Low (hydrocarbon)","typical_use":"Low-cost DIY single-phase immersion; higher viscosity and more oxidation than engineered fluids (representative ranges, not one product)","source_url":"https:\/\/d-central.tech\/examination-of-engineered-fluids-dielectric-coolants-for-cryptocurrency-mining\/"},{"name":"3M Novec 7000","manufacturer":"3M","fluid_type":"two-phase fluorocarbon-engineered-fluid","dielectric_strength_kv":"40 (0.1in gap)","kinematic_viscosity_cst_40c":"0.28 (at 30C)","flash_point_c":"None (non-flammable)","pour_point_c":"","thermal_conductivity_w_mk":"0.072","density_g_cm3":"1.40","boiling_point_c":"34","gwp":"575","typical_use":"Two-phase immersion; lowest boiling point in the Novec line (evaporative cooling at the chip)","source_url":"https:\/\/www.lookpolymers.com\/polymer_3M-Novec-7000-Engineered-Fluid.php"},{"name":"3M Novec 7100","manufacturer":"3M","fluid_type":"two-phase fluorocarbon-engineered-fluid","dielectric_strength_kv":">25 (0.1in gap)","kinematic_viscosity_cst_40c":"","flash_point_c":"None (non-flammable)","pour_point_c":"-135","thermal_conductivity_w_mk":"0.069","density_g_cm3":"1.51","boiling_point_c":"61","gwp":"320","typical_use":"Two-phase immersion cooling of electronics and ASICs","source_url":"https:\/\/www.chempoint.com\/products\/3m\/3m-novec-engineered-fluids\/3m-novec-engineered-fluids\/novec-7100"},{"name":"3M Novec 7200","manufacturer":"3M","fluid_type":"two-phase fluorocarbon-engineered-fluid","dielectric_strength_kv":"","kinematic_viscosity_cst_40c":"0.43 (at 25C)","flash_point_c":"None (non-flammable)","pour_point_c":"-138","thermal_conductivity_w_mk":"0.068","density_g_cm3":"1.43","boiling_point_c":"76","gwp":"55","typical_use":"Two-phase immersion cooling; higher boiling point than Novec 7100","source_url":"https:\/\/www.lookpolymers.com\/polymer_3M-Novec-7200-Engineered-Fluid.php"},{"name":"3M Novec 7500","manufacturer":"3M","fluid_type":"two-phase fluorocarbon-engineered-fluid","dielectric_strength_kv":"35 (0.1in gap)","kinematic_viscosity_cst_40c":"0.50 (at 50C)","flash_point_c":"None (non-flammable)","pour_point_c":"-100","thermal_conductivity_w_mk":"0.065","density_g_cm3":"1.60","boiling_point_c":"128","gwp":"90","typical_use":"Single- or two-phase immersion; high boiling point suits direct-contact server cooling","source_url":"https:\/\/www.lookpolymers.com\/polymer_3M-Novec-7500-Engineered-Fluid.php"},{"name":"3M Novec 649 (fluoroketone, FK-5-1-12)","manufacturer":"3M","fluid_type":"two-phase fluorocarbon-engineered-fluid","dielectric_strength_kv":">40 (0.1in gap)","kinematic_viscosity_cst_40c":"0.40 (at 25C)","flash_point_c":"None (non-flammable)","pour_point_c":"-108","thermal_conductivity_w_mk":"0.059","density_g_cm3":"1.60","boiling_point_c":"49","gwp":"1","typical_use":"Two-phase immersion; low-GWP fluoroketone (also marketed as a clean fire-suppression agent, Novec 1230)","source_url":"https:\/\/multimedia.3m.com\/mws\/media\/569865O\/3m-novec-engineered-fluid-649.pdf"},{"name":"3M Fluorinert FC-40","manufacturer":"3M","fluid_type":"two-phase fluorocarbon-engineered-fluid","dielectric_strength_kv":"46 (0.1in gap)","kinematic_viscosity_cst_40c":"2.2 (at 25C)","flash_point_c":"None (non-flammable)","pour_point_c":"-57","thermal_conductivity_w_mk":"0.062","density_g_cm3":"1.855","boiling_point_c":"165","gwp":">5000 (high; perfluorocarbon)","typical_use":"Two-phase immersion at high boiling point; legacy perfluorocarbon, long atmospheric lifetime","source_url":"https:\/\/multimedia.3m.com\/mws\/media\/64888O\/3m-fluorinert-electronic-liquid-fc-40.pdf"},{"name":"Galden HT-55 (PFPE)","manufacturer":"Syensqo (Solvay)","fluid_type":"two-phase fluorocarbon-engineered-fluid","dielectric_strength_kv":"40 (2.5mm gap)","kinematic_viscosity_cst_40c":"0.45 (at 25C)","flash_point_c":"None (non-flammable)","pour_point_c":"-110","thermal_conductivity_w_mk":"0.065","density_g_cm3":"1.65","boiling_point_c":"55","gwp":"High (~9000-10000; perfluoropolyether)","typical_use":"Two-phase immersion; lowest-boiling Galden HT grade","source_url":"https:\/\/www.lesker.com\/newweb\/fluids\/heattransfer-galden-ht\/"},{"name":"Galden HT-110 (PFPE)","manufacturer":"Syensqo (Solvay)","fluid_type":"two-phase fluorocarbon-engineered-fluid","dielectric_strength_kv":"40 (2.5mm gap)","kinematic_viscosity_cst_40c":"0.77 (at 25C)","flash_point_c":"None (non-flammable)","pour_point_c":"-100","thermal_conductivity_w_mk":"0.065","density_g_cm3":"1.71","boiling_point_c":"110","gwp":"High (~9000-10000; perfluoropolyether)","typical_use":"Two-phase immersion; higher-boiling Galden HT grade","source_url":"https:\/\/www.lesker.com\/newweb\/fluids\/heattransfer-galden-ht\/"}]}