Fluoride salts

FLiNaK & FLiBe

Our fluoride catalog covers the two salts most central to molten salt reactor research: the FLiNaK ternary eutectic, and off-eutectic FLiBe supplied to your target LiF:BeF₂ ratio.

FLiNaK

LiF–NaF–KF

The standard low-melting ternary fluoride eutectic used across molten salt reactor loops, corrosion coupons, and electrorefining studies. Single-phase melt down to 454°C with well-characterized viscosity and heat capacity.

Composition: 46.5 LiF – 11.5 NaF – 42.0 KF (mol %)
Melting point: 454°C
Purity: ≥ 99.9% (metals basis); O²⁻ < 300 ppm; corrosion-relevant transition metals < 50 ppm
Packaging: Argon-sealed pucks or granulate, 250 g – 25 kg, moisture-controlled below 20 ppm H₂O

Typical applications

MSR primary and secondary coolant simulant loops
Structural alloy corrosion testing (Hastelloy-N, SS316, Ni-based)
Electrorefining and electrodeposition research
Thermophysical property benchmarking

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FLiBe

LiF–BeF₂ (off-eutectic)

Supplied off-eutectic so the LiF:BeF₂ ratio can be tuned to your tritium breeding, viscosity, or neutron-economy target rather than fixed to the melting-point minimum. Melting point shifts with ratio — we confirm the liquidus for your specific composition before shipment.

Composition: Custom LiF:BeF₂ ratio, typically 66:34 to 80:20 (mol %) — customizable
Melting point: 460°C (typical, ratio-dependent)
Purity: ≥ 99.9% (metals basis); beryllium content certified per batch; moisture < 20 ppm
Packaging: Beryllium-handling controlled packaging, sealed under argon, shipped with full COA and SDS documentation

Typical applications

Tritium breeding blanket salt studies
High-temperature reactor coolant research
Beryllium fluoride chemistry and redox control studies
Custom viscosity / neutron-economy tuning

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Working with chlorides instead? See MgCl₂-NaCl systems →