ChemicalBook CAS DataBase List 7789-23-3

7789-23-3

Name	Potassium fluoride
CAS	7789-23-3
EINECS(EC#)	232-151-5
Molecular Formula	FK
MDL Number	MFCD00011398
Molecular Weight	58.1
MOL File	7789-23-3.mol

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

Chemical Properties

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

bulk density

400kg/m3

density

2.48

vapor density

2 (vs air)

vapor pressure

1.3 hPa (885 °C)

refractive index

1.363

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

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)

Specific Heat Capacity

Cp(crystal):0.843373J/(g·K),at 25℃

Safety Data

Symbol(GHS)	GHS05,GHS06
Signal word	Danger
Hazard statements	H301+H311+H331-H318
Precautionary statements	P261-P280-P301+P310-P302+P352+P312-P304+P340+P311-P305+P351+P338
Hazard Codes	T
Risk Statements	R25:Toxic if swallowed. R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . less more
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 . less more
RIDADR	UN 1812 6.1/PG 3
WGK Germany	3
RTECS	TT0700000
F	3
Hazard Note	Harmful
TSCA	Yes
REACH Registrations	Active
HazardClass	6.1
PackingGroup	III
HS Code	28261990
Storage Class	6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects
Hazard Classifications	Acute Tox. 3 Dermal Acute Tox. 3 Inhalation Acute Tox. 3 Oral Eye Dam. 1
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. less more
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) less more

Raw materials And Preparation Products

Hazard Information

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.

Toxics Screening Level

The initial threshold screening level (ITSL) for potassium fluoride is 76 μg/m3 based on an eight hour averaging time.

Material Safety Data Sheet(MSDS)

Questions And Answer

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. ;

Spectrum Detail

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7789-23-3

Chemical Properties

Safety Data

Raw materials And Preparation Products

Raw materials

Preparation Products

Hazard Information

General Description

Reactivity Profile

Air & Water Reactions

Hazard

Health Hazard

Potential Exposure

Fire Hazard

First aid

Shipping

Incompatibilities

Definition

Toxics Screening Level

Material Safety Data Sheet(MSDS)

Questions And Answer

Chemical Properties

Physical and Chemical Properties

Uses

Preparation

Spectrum Detail

Well-known Reagent Company Product Information

Supplier

Related Products