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Potassium fluoroaluminate
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Name

Potassium fluoroaluminate

 EINECS 238-485-8
CAS No. 14484-69-6 Density 2.9[at 20℃]
PSA 0.00000 LogP 1.68080
Solubility 2.5g/L at 20℃ Melting Point 546 °C
Formula KAlF4 Boiling Point N/A
Molecular Weight 142.073 Flash Point N/A
Transport Information N/A Appearance solid
Safety 22-26-36/37/39-45 Risk Codes 31-36/37/38
Molecular Structure Molecular Structure of 14484-69-6 (Potassium fluoroaluminate) Hazard Symbols IrritantXi
Synonyms

Aluminate(1-),tetrafluoro-, potassium (8CI);Aluminate(1-), tetrafluoro-, potassium, (T-4)-(9CI);Potassium tetrafluoroaluminate (6CI,7CI);Aluminum potassium fluoride(AlKF4);FL 20;FL 20 (flux);Potassium aluminum fluoride;Potassium aluminumfluoride (KAlF4);Potassium tetrafluoroaluminate (KAlF4);Potassiumtetrafluoroaluminate(1-);

Article Data 12

Potassium fluoroaluminate Synthetic route

potassium hexafluorosilicate

aluminium oxide

A

14484-69-6

potassium tetrafluoroaluminate

B

tripotassium hexafluoroaluminate

Conditions
ConditionsYield
In solid at 500°C;

potassium hexafluorosilicate

corundum

A

14484-69-6

potassium tetrafluoroaluminate

B

tripotassium hexafluoroaluminate

kalsilite

Conditions
ConditionsYield
In solid thermal decompn.;

aluminum trihydroxide

7664-39-3

hydrogen fluoride

584-08-7

potassium carbonate

14484-69-6

potassium tetrafluoroaluminate

Conditions
ConditionsYield
In water reacting mixt. of K2CO3 in soln. with specified amt. of Al(OH)3, acidifying with excess aq. HF, drying at 100°C, annealing for 48 h; DTA anal., X-ray diffraction anal.;
1333-84-2, 1344-28-1

aluminum oxide

14075-53-7

potassium tetrafluoroborate

A

14484-69-6

potassium tetrafluoroaluminate

B

tripotassium hexafluoroaluminate

Conditions
ConditionsYield
In neat (no solvent) heating (600°C, molar ratio KBF4/Al2O3 3:1 or 6:1), isothermal treatment ( 1-5 h); thermogravimetry; X-ray diffraction;
1333-84-2, 1344-28-1

aluminum oxide

14075-53-7

potassium tetrafluoroborate

14484-69-6

potassium tetrafluoroaluminate

Conditions
ConditionsYield
In neat (no solvent) heating (475-600°C, molar ratio KBF4/Al2O3 2:1, 3:1 or 6:1), isothermal treatment ( 1-5 h); thermogravimetry; X-ray diffraction;
7784-18-1

aluminum(III) fluoride

potassium fluoride dihydrate

14484-69-6

potassium tetrafluoroaluminate

Conditions
ConditionsYield
In neat (no solvent) heating (to 400°C), isothermal treatment (0.5 h);
In water addn. of stoichiometric amt. of KF*2H2O dissolved in little H2O to AlF3(prepared from Al2O3 and 48% HF), pptn., soln. and solid digested for 1h on a steam bath; decanted, precipitate dried (open muffle furnace at 378K), fused at 933K in vitreosil crucible for 15-20min, melt cooled in desiccator;

potassium hexafluorozirconate

7429-90-5

aluminium

A

14484-69-6

potassium tetrafluoroaluminate

B

tripotassium hexafluoroaluminate

C

Al3Zr

Conditions
ConditionsYield
In neat (no solvent) Al and K2ZrF6 powders mixed (stoich. ratio), heated (air or vac., 700°C.); X-ray diffraction anal.;
14075-53-7

potassium tetrafluoroborate

7429-90-5

aluminium

14484-69-6

potassium tetrafluoroaluminate

Conditions
ConditionsYield
byproducts: B; ground, mixed; evacuated (1E-2 mmHg); 200-500°C, 5-6 h; B isolated by washing (HCl, H2SO4, room temp.);

2K(1+)*H(1+)*AlF6(3-) = K2HAlF6

14484-69-6

potassium tetrafluoroaluminate

Conditions
ConditionsYield
In neat (no solvent, solid phase) byproducts: HF, H2O; heating at 400°C; X-ray diffraction, IR, elem. anal.;

potassium oxonium hexafluoroaluminate

14484-69-6

potassium tetrafluoroaluminate

Conditions
ConditionsYield
In neat (no solvent) byproducts: H2O, HF; thermal decompn. at 85 - 210°C (at 85 - 140°C loss of 2 mol HF and 1,5 mol H2O, at higer temp. loss of 0.5 mol H2O);

Potassium fluoroaluminate Specification

The Potassium aluminum tetrafluoride, with the CAS registry number 14484-69-6 and EINECS registry number 238-485-8, has the systematic name of potassium tetrafluoroaluminate(1-). And the molecular formula of this chemical is KAlF4. It is a kind of solid which is sensitive to moisture, and it is incompatible with strong oxidizing agents. What's more, it is used as pesticide, and it is also used in the Glass and ceramics industries.

Preparation of Potassium aluminum tetrafluoride: Hydrofluoric acid reacts with aluminium hydroxide, and gives hydrofluoaluminic acid. Then hydrofluoaluminic acid reacts with withpotassium hydroxide under a high temperature, and you can get the deesired product after a series of filtration, drying, fusing and smashing.

You should be cautious while dealing with this chemical. It irritates eyes, respiratory system and skin. And if contact with acids, it will liberate toxic gas. Therefore, you had better take the following instructions: Do not breathe dust; Wear suitable protective clothing, gloves and eye/face protection, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; In case of accident or if you feel unwell, seek medical advice immediately (show label where possible).

You can still convert the following datas into molecular structure:
(1)SMILES: [K+].F[Al-](F)(F)F
(2)InChI: InChI=1/Al.4FH.K/h;4*1H;/q+3;;;;;+1/p-4/rAlF4.K/c2-1(3,4)5;/q-1;+1
(3)InChIKey: SKFYTVYMYJCRET-CLUKDOEBAI

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