Potassium Fluoride (KF) – Anhydrous
Drying / fluorination • alkali • industrial
CAS
7789‑23‑3
Formula / MW
KF • 58.10 g/mol
Appearance
white crystalline solid
Solubility
high in H₂O; limited in organics
Hazard
corrosive / toxic (fluoride)
Commonly used neat or supported (KF/alumina) for drying and
nucleophilic fluorination. Avoid acids and moisture; fluoride
exposure is hazardous. Consult the SDS before handling.
| Parameter | Typical | Spec |
|---|---|---|
| Assay (KF) | ≥ 99.5% | ≥ 99.0% |
| Loss on drying (moisture) | ≤ 0.10% | ≤ 0.30% |
| Insoluble matter | ≤ 0.01% | ≤ 0.05% |
| Chloride (Cl⁻) | ≤ 0.005% | ≤ 0.02% |
| Sulfate (SO₄²⁻) | ≤ 0.005% | ≤ 0.02% |
| Heavy metals (as Pb) | ≤ 10 ppm | ≤ 20 ppm |
| Iron (Fe) | ≤ 10 ppm | ≤ 20 ppm |
| Particle form | powder / small pellets | — |
| Parameter | Typical | Spec |
|---|---|---|
| Assay (KF) | ≥ 99.0% | ≥ 98.5% |
| Loss on drying (moisture) | ≤ 0.30% | ≤ 0.80% |
| Insoluble matter | ≤ 0.05% | ≤ 0.10% |
| Chloride (Cl⁻) | ≤ 0.02% | ≤ 0.05% |
| Sulfate (SO₄²⁻) | ≤ 0.02% | ≤ 0.05% |
| Use cases | fluxes, metal treatment, general fluorination | — |
| Item | Status | Notes |
|---|---|---|
| DG classification | May be regulated | Classification and UN number depend on route/jurisdiction; consult carrier & local regs. |
| Handling | dry conditions | hygroscopic; avoid moisture; prevent skin/eye contact; use local exhaust |
| Incompatibilities | acids, moisture, oxidizers | contact with acids can release HF (highly corrosive) |
| PPE | gloves, goggles/face shield, coat | handle in fume hood or ventilated area |
| Spills/Disposal | controlled neutralization | collect dry; avoid aqueous cleanup; dispose per local regulations |
Fluoride exposure is serious; have calcium gluconate gel available where appropriate and follow site medical protocols.
| Applications | Packaging | Storage & Handling |
|---|---|---|
|
• Drying agent and base (e.g., KF/alumina) in organic
synthesis.
• Nucleophilic fluorination and halide exchange reactions. • Metal surface treatment, fluxes, glass/ceramics. |
• 25 kg PE‑lined bags or fiber drums (inner liner).
• 1 kg HDPE bottles for lab/R&D. • Custom bulk packaging on request. |
• Store tightly sealed in a cool, dry, ventilated area.
• Use desiccant; reseal immediately after opening. • Keep away from acids and moisture; label fluoride hazards clearly. |
Values above are representative; shipped material conforms to the
lot COA. Regulatory classifications may vary by jurisdiction and
carrier.