Solubility: soluble in water, hydrofluoric acid, liquid ammonia, insoluble in alcohol[1]
chemical property
It decomposes slightly when heated to sublimation temperature, but molten potassium fluoride is more active and can corrode refractory materials.It can form adduct KF · H with hydrogen peroxidetwoOtwo。There are two kinds of hydrates: KF · 2HtwoO and KF · 4HtwoO。When the temperature is lower than 40.2 ℃, dihydrate (KF · 2H) can be obtained by crystallization in aqueous solutiontwoO），It is monoclinic crystal and can dissolve in crystal water at 41 ℃.
Calculate chemical data
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Reference value for drainage parameter calculation (XlogP): None
Number of hydrogen bond donors: 0[2]
Number of hydrogen bond receptors: 1[2]
Number of rotatable chemical bonds: 0[2]
Number of tautomers: 0
Topological molecular polar surface area: 0[2]
Number of heavy atoms: 2[2]
Surface charge: 0[2]
Complexity: 2[2]
Number of isotope atoms: 0[2]
Determine the number of atomic structure centers: 0[2]
Number of uncertain atomic structure centers: 0[2]
Determine the number of chemical bond structure centers: 0[2]
Number of uncertain chemical bond structure centers: 0[2]
Number of covalent bond units: 2[1]
application
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1. For glass carving, food preservation and electroplating;
2. It can be used as welding flux, insecticide, catalyst, absorbent (absorbing HF and water), etc;
3. Used as analytical reagent and complex forming agent.It is also the raw material for preparing potassium hydrogen fluoride;
4. It can be used as a fluorinating agent for organic compounds.
First aid measures
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Skin contact: Take off contaminated clothes immediately, and wash with plenty of flowing water for at least 15 minutes.Get medical attention.
Eye contact: immediately lift the eyelid, and thoroughly flush it with a large amount of flowing water or physiological saline for at least 15 minutes.Get medical attention.
Inhalation: quickly leave the site to a place with fresh air.Keep the respiratory tract unobstructed.If breathing is difficult, give oxygen.If breathing stops, perform artificial respiration immediately.Get medical attention.
Ingestion: Rinse with water and drink milk or egg white.Get medical attention.
Fire fighting measures
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Hazardous combustion product: hydrogen fluoride.
Extinguishing method: put out the fire with a large amount of water.Use foggy water to disperse smoke and irritating gases.
Leakage emergency treatment
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Isolate the leakage contaminated area and restrict access.It is recommended that emergency personnel wear dust masks (full face masks) and gas suits.Do not touch the leakage directly.
Small amount of leakage: avoid raising dust and collect it in a dry, clean and covered container with a clean shovel.A large amount of water can also be used for flushing, and the diluted washing water will be discharged into the waste water system.
Large amount of leakage: collect and recycle or transport to waste disposal site for disposal.
Handling and storage
Operation precautions: closed operation, local exhaust.Operators must be specially trained and strictly abide by the operating procedures.It is recommended that the operator wear a hood type electric air supply filter type dust respirator, an adhesive tape gas suit and latex gloves.Avoid dust generation.Avoid contact with acids.Load and unload gently during transportation to prevent damage to packaging and containers.Provide leakage emergency treatment equipment.Empty containers may leave harmful substances.
Precautions for storage: store in a cool and ventilated warehouse.Keep away from kindling and heat sources.Packing and sealing.It shall be stored separately from acids and edible chemicals, and mixed storage is strictly prohibited.The storage area shall be equipped with appropriate materials to contain leakage.
security information
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Safety terminology
S26：In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
After eye contact, immediately flush with plenty of water and seek medical advice.
S45：In case of accident or if you feel unwell, seek medical advice immediately (show the lable where possible).
In case of an accident or feeling unwell, seek medical advice immediately (show the label if possible).
Risk terminology
R23/24/25：Toxic by inhalation, in contact with skin and if swallowed.
Toxic by inhalation, in contact with skin, and if swallowed.
