
Potassium Hydrogen Difluoride ( KHF2 ) Potassium Bifluoride [ CAS: 7789-29-9 ] - 10g
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Description
Potassium Hydrogen Difluoride
Other Names: Potassium bifluoride, Potassium acid fluoride
CAS Number: 7789-29-9
Chemical Formula: KHF₂
Molar Mass: 78.10 g/mol
Appearance: Colorless to white crystalline solid
Chemical and Physical Properties
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Density: 2.37 g/cm³
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Melting Point: ~239 °C (decomposes)
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Boiling Point: Not applicable (decomposes)
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Solubility in Water: Soluble (~23 g/100 mL at 20 °C)
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Solubility in Other Solvents: Slightly soluble in ethanol
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Odor: Odorless
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pH (1% solution): Acidic
Applications
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Metal Surface Treatment: Used in the etching and polishing of glass and metal surfaces.
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Chemical Industry: Intermediate in the production of fluorine-containing compounds.
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Laboratory Use: Applied in analytical procedures involving silica or silicates.
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Flux Component: Used in aluminum and magnesium processing.
⚠️ Not intended for food, pharmaceutical, or cosmetic use.
Safety
Signal Word: ⚠️ Danger
H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]
H310 (16.4%): Fatal in contact with skin [Danger Acute toxicity, dermal]
H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
H318 (10.2%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
P260, P262, P264, P264+P265, P270, P280, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P361+P364, P363, P405, and P501
Handling and Storage
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Handling: Handle under adequate ventilation. Avoid contact with skin, eyes, and clothing. Prevent dust formation.
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Storage: Store in a tightly closed container in a cool, dry, and well-ventilated place. Keep away from incompatible substances such as acids and moisture.