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Potassium fluoride

Chemical Properties Physical and Chemical Properties
Potassium fluoride
Potassium fluoride
Chemical Name:
Potassium fluoride
KF;DG 18;Kaliumfluorid;MANNITOL SALT;SUCROSE, MOLECUL;potassiumfluorure;Potassium fluorure;POTASSIUM FLUORIDE;fluoruredepotassium;PotassiumFluorideGr
Molecular Formula:
Formula Weight:
MOL File:

Potassium fluoride Properties

Melting point:
858 °C(lit.)
Boiling point:
1505 °C
refractive index 
Flash point:
storage temp. 
Store at RT.
H2O: 1 M at 20 °C, clear, colorless
7.0-8.5 (25℃, 1M in H2O)
Water Solubility 
92.3 g/100 mL (18 ºC)
Stable. Protect from moisture. Incompatible with strong acids, strong bases.
CAS DataBase Reference
7789-23-3(CAS DataBase Reference)
NIST Chemistry Reference
Potassium fluoride(7789-23-3)
EPA Substance Registry System
Potassium fluoride (KF)(7789-23-3)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  T
Risk Statements  25-23/24/25
Safety Statements  45-26-36/37
RIDADR  UN 1812 6.1/PG 3
WGK Germany  3
RTECS  TT0700000
Hazard Note  Harmful
HazardClass  6.1
PackingGroup  III
Hazardous Substances Data 7789-23-3(Hazardous Substances Data)
Toxicity MLD in guinea pigs (mg/kg): 250 orally, 350 s.c.; in frogs (mg/kg): 375 s.c. (Simonin)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501
H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501
H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P311 Call a POISON CENTER or doctor/physician.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.

Potassium fluoride price More Price(35)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 1.04994 Potassium fluoride 7789-23-3 1EA $144 2017-11-08 Buy
Sigma-Aldrich 01132 Potassium fluoride purified, ≥99% 7789-23-3 2.5kg $298 2017-11-08 Buy
Alfa Aesar 010980 Potassium fluoride, 99.99% (metals basis) 7789-23-3 2g $26.3 2018-11-16 Buy
Alfa Aesar 010980 Potassium fluoride, 99.99% (metals basis) 7789-23-3 10g $92 2018-11-16 Buy
Strem Chemicals 93-1922 Potassium fluoride, anhydrous, 98% 7789-23-3 25g $18 2018-11-13 Buy

Potassium fluoride Chemical Properties,Uses,Production

Chemical Properties

Potassium fluoride, KF, is a colorless, deliquescent crystalline solid that has a melting point of 846 °C(1550 °F). Potassium fluoride has a salty taste and is poisonous. It is soluble in water,but insoluble in alcohol. Potassium fluoride is used in etching glass,preservatives, and insecticides.

Physical and Chemical Properties

Potassium fluoride is basis raw material of manufacturing fluoride, chemical formula is KF. Molecular weight is 58.10. It is colorless cubic crystal or white powder. It is poisonous! It is deliquescent. Taste is salty. Specific gravity is 2.48. Melting point is 858℃. Boiling point is 1505℃. It is soluble in water. It was dissolved in hydrofluoric acid and ammonia. It is insoluble in ethanol, acetone. Aqueous solution is alkaline and it can corrode glass and porcelain. It can cause irritation for human skin, mucous membrane and eye. When belows 40.2℃, it can crystallize in an aqueous solution to give dihydrate KF·2H2O, which is monoclinic, it is self-dissolved crystalline water at 41℃. It can be obtained by the thermal decomposition of potassium hydrogen fluoride or potassium carbonate (or potassium hydroxide) and hydrofluoric acid (40% or anhydrous). It can be used for glass engraving, food preservation, it can be also used as welding flux, fluoride, pesticides,etc.

Figure 1 the structural formula of potassium fluoride.


Industry Application Role/benefit
Organic synthesis Preparation of various organic fluoride Fluorinating agent/replaces other halide ions like chlorine, bromine etc.
Chemical manufacture Manufacture of polyurethanes and alkyl benzenes Catalyst/promote the reaction rate
Manufacture of pesticides and insecticides Fluorinating agent; ingredient
Manufacture of potassium bifluoride Raw material
Metallurgy Soldering Soldering fluxes/help to remove oxide film
Tin plating Plating composition/source of fluoride
Glass Etching of glass Glass etching composition; source of fluoride
Others Food and wood preservative Source of fluoride
Absorption of hf and moisture Adsorbent/anhydrous potassium fluoride has hydroscopicity
Complexometric titration of tantalum Masking agent
Extraction of tantalum from ore Precipitator/reacts with fluorotantalic acid to precipitate potassium fluorotantalate

Reactivity Profile

Potassium fluoride reacts with acids to evolve corrosive and toxic hydrogen fluoride. Aqueous solutions corrode glass and consequently are prepared and stored in polyethylene containers. The pure solid may be stored in glass containers. Reacts violently with (Pt + BrF3). [NTP 1992].

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Potassium fluoride Preparation Products And Raw materials

Raw materials

Preparation Products

Potassium fluoride Suppliers

Global( 229)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 22119 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20795 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32764 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1465 55
Shanghai Aladdin Bio-Chem Technology Co.,LTD 021-20337333/400-620-6333
021-50323701 China 25126 65
Shandong Yinglang Chemical Co.,Ltd. 18888295188;18888295177
+86-531-88999750 China 70 58
SHANG FLUORO 021-65170832 13331983812 18019716620
021-66315200 China 308 60
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40399 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30308 84

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