The most common misread of the fluorspar market in 2026 is that the Kigali Amendment's HFC phase-down is going to collapse downstream HF and acidspar demand. The reasoning sounds tidy: Kigali phases out high-GWP refrigerants, HFCs are made from HF, therefore HF demand falls. The chemistry says otherwise. HFOs — the low-GWP replacement chemistry — contain roughly the same fluorine mass per kilogram as the HFCs they displace, and HFO synthesis routes consume comparable hydrofluoric acid per tonne. The Kigali transition is a product-mix shift, not a fluorine-demand shock, and procurement teams hedging the wrong way will land stranded.
What Kigali Actually Mandates
The Kigali Amendment to the Montreal Protocol was adopted in October 2016 and entered into force on 1 January 2019 (source: UNEP Ozone Secretariat). It is the first global treaty to phase down hydrofluorocarbons (HFCs) — refrigerants which, unlike the older CFCs and HCFCs, don't damage stratospheric ozone but do have high global warming potentials (GWPs of 1,300 to 4,000+ for the common HFCs). As of mid-2026, the amendment has 165+ ratifying parties (source: UNEP).
The phase-down is grouped. Article 5 Group 1 (most developed and Annex II countries) cuts HFC consumption to 15% of their 2011–2013 baseline by 2036; Article 5 Group 2 (most developing economies) phases later, freezing at baseline in 2024 and cutting to 20% by 2045. The EU's F-Gas Regulation (recast as Regulation (EU) 2024/573, in force from 11 March 2024) layers stricter sectoral bans on top — including a ban on new commercial refrigeration with GWP ≥ 150 and a phase-out of HFCs in stationary air conditioning by 2032 (source: EU Official Journal). The US AIM Act (2020) tracks Kigali Group 1 with an 85% HFC reduction by 2036 from a 2011–13 baseline (source: EPA).
The HFC-to-HFO Transition
HFOs (hydrofluoroolefins) are the dominant Kigali-compliant replacement chemistry. The two patent-holding incumbents — Honeywell (Solstice brand) and Chemours (Opteon brand) — collectively cover most commercial HFO species: HFO-1234yf (near-universal in new EU and US vehicle air-conditioning since ~2017), HFO-1234ze(E) (commercial refrigeration and foam blowing), HFO-1336mzz(Z) (large chillers and Organic Rankine Cycle working fluids), and various HFC/HFO blends (R-454B, R-32 augmented with HFO-1234yf, etc.). HFO synthesis typically routes through HF and a chlorinated propene intermediate over a catalyst step.
The critical chemistry detail: HFOs contain fluorine in the same atomic proportion as the HFCs they replace. HFC-134a (1,1,1,2-tetrafluoroethane, C₂H₂F₄, MW 102) is ~75% fluorine by mass with four fluorine atoms per molecule. HFO-1234yf (2,3,3,3-tetrafluoropropene, C₃H₂F₄, MW 114) is ~67% fluorine by mass, also four fluorine atoms per molecule. The HFO molecule adds a carbon to the backbone for the carbon-carbon double bond that gives it a short atmospheric lifetime, but the fluorine count per molecule is identical.
The HF Input Math
Per tonne of refrigerant produced, HF consumption is comparable across HFC and HFO routes — approximately 1.0–1.5 t HF per tonne of finished refrigerant, depending on the species, catalyst step yield, and whether the HF input feeds a chromium or antimony fluorination catalyst. The acidspar input upstream is roughly 2.2 t fluorspar per tonne of HF (CaF₂ + H₂SO₄ → 2 HF + CaSO₄; stoichiometric, before yield losses). That puts acidspar demand from refrigerants at approximately 2.2–3.3 t per tonne of finished refrigerant — regardless of which generation (HFC or HFO) is produced.
The net fluorspar demand picture from refrigerants therefore depends on total refrigerant production volume, not on the HFC-vs-HFO product split. Global refrigerant demand is growing at ~3% annually, driven by Asia-Pacific stationary air-conditioning rollouts and the cold-chain build-out (per AHRI annual statistics summaries; for cold-chain context see IEA's "The Future of Cooling" 2018 baseline). The Kigali phase-down redirects which refrigerants get made; it does not meaningfully reduce how much refrigerant gets made.
Where HF Demand Actually Shifts
If refrigerant HF demand is roughly stable to growing, the real growth in fluorspar/HF demand sits elsewhere. Lithium battery electrolyte salt (LiPF₆) is the fastest-growing fluorine sink, moving from a low single-digit share of global HF demand in 2018 to an estimated ~6–8% by 2026 (per Roskill and Project Blue battery materials studies; verify against the live index). Fluoropolymers (PTFE, PVDF, FEP) — including the PVDF binder in lithium-battery cathodes and the PVDF backsheets in PV solar modules — continue to grow at ~4–6% annually. Semiconductor-grade HF for wafer cleaning is a smaller but premium-priced segment.
Net result: USGS Mineral Commodity Summaries 2026 reports global fluorspar production at ~8–9 Mt/yr, with downstream demand growing 2–4% annually (verify against the live index at USGS MCS 2026 — fluorspar). The Kigali transition is one demand input across that growth — not a deduction from it.
Where the Conventional Wisdom Misreads the Kigali Phase-Down
- Equating Kigali with a fluorine phase-out. Kigali phases down high-GWP HFC refrigerants. HFO replacements still contain fluorine and consume comparable HF per tonne of refrigerant. The treaty addresses climate-warming potential, not fluorine chemistry.
- Assuming HFO production needs less HF. HFO-1234yf and HFO-1234ze(E) are both C₃H₂F₄ — four fluorine atoms per molecule. HF input per tonne of HFO is in the same range as for HFC-134a or HFC-32. The synthesis paths differ; the fluorine demand does not collapse.
- Treating EU F-Gas and US AIM Act as identical. The EU adds sectoral bans (commercial refrigeration GWP ≤ 150 from 2024; stationary AC HFC phase-out by 2032) on top of the Kigali quota. The US is closer to the Kigali baseline schedule. A procurement strategy assuming uniform global phase-down terms underestimates EU stationary-AC transition speed.
- Stating Chinese HFC capacity will be stranded. Chinese HFC producers — the largest fluorspar consumers globally — are actively pivoting existing capacity to HFO production. The capacity is being repurposed within the same fluorine value chain, not retired.
- Predicting refrigerant HF demand to fall sharply by 2030. Refrigerant HF demand is more likely flat-to-slightly-growing through 2030 — Asia-Pacific AC demand growth (~3% annually) offsets the HFC phase-down by unit volume. Kigali measures progress in GWP-weighted CO₂-equivalent tonnes; replacing HFC-134a (GWP 1,300) with HFO-1234yf (GWP <1) collapses the CO₂-eq picture by ~99.9% but consumes comparable HF. The unit-tonne picture is what fluorspar buyers care about, and it does not collapse.
What This Means for HF and Fluorspar Procurement
For procurement teams writing 2027 contracts: model refrigerant-segment HF demand as stable, not collapsing. The acidspar feedstock chain remains tight at the premium end (low-As, low-P specifications for battery and semiconductor-grade HF — see the acid-grade fluorspar product page). The standard 97% CaF₂ market is balanced. For risk officers: the dominant uncertainty is Asia-Pacific stationary AC growth rate, not Kigali compliance. For policy analysts: the HFO patent landscape (Honeywell and Chemours, with Japanese and Chinese challengers) is the practical bottleneck on transition speed.
Additional Market Context
UNEP Ozone Secretariat, EU Official Journal, USEPA AIM Act allocations, AHRI annual statistics, USGS Mineral Commodity Summaries, and Fastmarkets are the named authorities procurement teams should be reading monthly for fluorine-chain direction — not generic refrigerant-market trade press.
Next step: Request a battery-electrolyte acidspar assay (CaF₂ ≥ 97.5%, As < 5 ppm) for Bare Syndicate Kandahar production, or browse the broader acid-grade fluorspar portfolio across standard and premium grades.
Last reviewed: 2026-06-13. No spot prices quoted; refer to named authorities before contract execution.
