| Identification | More | [Name]
Potassium fluoride | [CAS]
7789-23-3 | [Synonyms]
POTASSIUM FLUORIDE
POTASSIUM FLUORIDE IN D2O NMR REFERENCE STANDARD
POTASSIUM FLUORIDE ON CELITE(R)
Fluorure de potassium
fluoruredepotassium
KF
Potassium fluoride (KF)
Potassium fluorure
potassiumfluoride(kf)
Potassiumfluoride,anhydrous
potassiumfluorure
Potassium fluoride 99%
potassium fluoride spray dried
Potassium flroride anhydrous
POTASSIUM FLUORIDE PURIFIED
POTASSIUM FLUORIDE SPRAY-DRIED 99%
POTASSIUM FLUORIDE REAGENT GRADE 98%
POTASSIUM FLUORIDE, ANHYDROUS, POWDER, 9 9.99+%
POTASSIUM FLUORIDE, 99+%, A.C.S. REAGENT
POTASSIUM FLUORIDE, 99.99% METALS BASIS | [EINECS(EC#)]
232-151-5 | [Molecular Formula]
FK | [MDL Number]
MFCD00011398 | [Molecular Weight]
58.1 | [MOL File]
7789-23-3.mol |
| Chemical Properties | Back Directory | [Appearance]
White, crystalline, deliquescent powder;
sharp saline taste.Soluble in water and hydrogen
fluoride, insoluble in alcohol.
| [Melting point ]
858 °C (lit.) | [Boiling point ]
1505 °C
| [density ]
2.48
| [vapor density ]
2 (vs air)
| [vapor pressure ]
1.3 hPa (885 °C) | [refractive index ]
1.363 | [Fp ]
1505°C | [storage temp. ]
Store at RT. | [solubility ]
H2O: 1 M at 20 °C, clear, colorless
| [form ]
spray-dried
| [color ]
White | [Specific Gravity]
2.481 | [Odor]
Odorless | [PH]
7.0-8.5 (25℃, 1M in H2O) | [Stability:]
Stable. Protect from moisture. Incompatible with strong acids, strong bases. | [Water Solubility ]
92.3 g/100 mL (18 ºC) | [Sensitive ]
Hygroscopic | [λmax]
λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01 | [Merck ]
14,7632 | [BRN ]
3902818 | [Exposure limits]
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 | [InChIKey]
NROKBHXJSPEDAR-UHFFFAOYSA-M | [LogP]
-0.77 at 25℃ | [CAS DataBase Reference]
7789-23-3(CAS DataBase Reference) | [NIST Chemistry Reference]
Potassium fluoride(7789-23-3) | [EPA Substance Registry System]
7789-23-3(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
T | [Risk Statements ]
R25:Toxic if swallowed.
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . | [Safety Statements ]
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [RIDADR ]
UN 1812 6.1/PG 3
| [WGK Germany ]
3
| [RTECS ]
TT0700000
| [F ]
3 | [Hazard Note ]
Harmful | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
28261990 | [Safety Profile]
Poison by ingestion and
intraperitoneal routes. Moderately toxic by
subcutaneous route. Experimental
teratogenic effects. A corrosive irritant to
the eyes, skin, and mucous membranes.
Mutation data reported. A very reactive
material. When heated to decomposition it
emits toxic fumes of K2O and F-. Used in
etchmg glass, as a presewative, as an
insecticide, and in organic synthesis. See also
FLUORIDES and HYDROFLUORIC
ACID. | [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) |
| Raw materials And Preparation Products | Back Directory | [Raw materials]
Potassium carbonate-->Potassium hydroxide-->Hydrogen fluoride-->Ampicillin-->Hexafluorosilicic acid | [Preparation Products]
Potassium hydroxide-->4-Fluoroaniline-->Methyl chloroacetate-->Ampicillin-->3-MORPHOLINOPHENYLBORONIC ACID PINACOL ESTER-->6-(TRIFLUOROMETHYL)PYRIDINE-3-CARBOXALDEHYDE-->1-[6-(Trifluoromethyl)pyridin-2-yl]piperazine-->4-AMINO-2-CHLOROBENZOTRIFLUORIDE-->2-CHLORO-4-NITROBENZOTRIFLUORIDE-->5-FLUORO-1H-PYRROLO[3,2-B] PYRIDINE-->2-FLUORO-3-IODO-5-NITROPYRIDINE-->1,2,3-Trifluoro-4-nitrobenzene-->4-(Trifluoromethyl)nicotinic acid-->Hexaflumuron-->2-Chloro-6-trifluoromethylnicotinic acid-->2-FLUORO-3-NITRO-5-BROMO PYRIDINE-->3-Chloro-4-fluoroaniline-->2,4-Difluoroaniline-->2,6-Difluorobenzamide-->2,4-DIAMINO-6-FLUOROPYRIMIDINE-->3-AMINO-2-FLUORO-4-PICOLINE-->2-Fluoroaniline-->2,6-Difluorobenzonitrile-->4-AMINO-2,6-DIFLUOROPYRIMIDINE-->2-AMINO-4,6-DIFLUOROPYRIMIDINE-->2-Trifluoromethyl-5-bromopyridine-->4-FLUORO-2-NITROBENZONITRILE-->Fluoro-N,N,N',N'-tetramethylformamidinium hexafluorophosphate-->2-Fluorophenol-->2-Fluoroethyl bromide-->Methyl fluoroacetate |
| Hazard Information | Back Directory | [General Description]
White powder or crystals with a sharp saline taste. Shipped as a solid or an aqueous solution. Strongly irritates skin, eyes and mucous membranes. Toxic by ingestion. Used in insecticides, solder flux and etching glass. | [Reactivity Profile]
POTASSIUM FLUORIDE(7789-23-3) 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]. | [Air & Water Reactions]
Deliquescent. Water soluble. | [Hazard]
Toxic by ingestion and inhalation, strong
irritant to tissue.
| [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. | [Potential Exposure]
Potassium fluoride is used in etching
glass; as a preservative and insecticide. | [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. | [First aid]
Move victim to fresh air. Call 911 or emergency
medical service. Give artificial respiration if victim is not
breathing. Do not use mouth-to-mouth method if victim
ingested or inhaled the substance; give artificial respira-
tion with the aid of a pocket mask equipped with a one-way
valve or other proper respiratory medical device.
Administer oxygen if breathing is difficult. Remove and
isolate contaminated clothing and shoes. In case of contact
with substance, immediately flush skin or eyes with run-
ning water for at least 20 minutes. For minor skin contact,
avoid spreading material on unaffected skin. Keep victim
warm and quiet. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. Ensure that
medical personnel are aware of the material(s) involved
and take precautions to protect themselves. Medical obser-
vation is recommended for 24?48 hours after breathing
overexposure, as pulmonary edema may be delayed.
As first aid for pulmonary edema, a doctor or authorized
paramedic may consider administering a drug or other
inhalation therapy. | [Shipping]
UN1812 Potassium fluoride, solid, Hazard Class:
6.1; Labels: 6.1-Poisonous materials. | [Incompatibilities]
Incompatible with strong acids; reacts
releasing hydrogen fluoride. Aqueous solutions corrode
glass and consequently are prepared and stored in polyeth-
ylene containers. The pure solid may be stored in glass
containers. Reacts violently with (Pt 1 BrF 3 ) | [Definition]
ChEBI: Potassium fluoride is a fluoride salt having K+ as the counterion. It has a role as a poison. It is a fluoride salt and a potassium salt. |
| Questions And Answer | Back Directory | [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.
| [Uses]
Anhydrous Potassium fluoride is used in organic synthesis as a catalyst for various reactions, or to introduce fluorine into organic molecules. For example, fluoro compounds can be prepared by replacing labile chlorine atoms by fluorine atoms, as in the manufacture of sodium fluoroacetate, a rat poison. The nucleophilic strength of F− and the solubility of KF in aprotic organic solvents may be improved by using crown ethers. The “naked” fluoride ion obtained is an efficient fluorinating agent. | [Preparation]
Potassium fluoride is prepared by reacting potassium carbonate (or KOH) with aqueous hydrofluoric acid. Care is necessary in handling the anhydrous salt, to prevent its hydration.
|
| Questions and Answers (Q&A) | Back Directory | [Uses]
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
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