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Potassium fluoride(CAS No. 7789-23-3)

Potassium fluoride KF (cas 7789-23-3) Molecular Structure

7789-23-3 Structure

Identification and Related Records

【Name】
Potassium fluoride
【CAS Registry number】
7789-23-3
【Synonyms】
Potassium fluoride anhydrous
potassium fluoride spray dried
Potassium fluoride 99%
【EINECS(EC#)】
232-151-5
【Molecular Formula】
KF (Products with the same molecular formula)
【Molecular Weight】
58.09
【Inchi】
InChI=1/FH.K/h1H;/q;+1/p-1
【InChIKey】
NROKBHXJSPEDAR-UHFFFAOYSA-M
【Canonical SMILES】
[F-].[K+]
【MOL File】
7789-23-3.mol

Chemical and Physical Properties

【Appearance】
white, crystalline powder
【Density】
2.48
【Melting Point】
860℃
【Boiling Point】
1505℃
【Vapour】
922mmHg at 25°C
【Refractive Index】
1.363
【Flash Point】
Not considered to be a fire hazard
【Water】
92.3 g/100 mL (18℃)
【Solubilities】
reacts
【Color/Form】
White cubic crystals
White crystalline, deliquescent powder
【Stability】
Stable. Protect from moisture. Incompatible with strong acids, strong bases.
【Storage temp】
Store at RT.
【Computed Properties】
Molecular Weight:58.096703 [g/mol]
Molecular Formula:FK
H-Bond Donor:0
H-Bond Acceptor:1
Rotatable Bond Count:0
Exact Mass:57.96211
MonoIsotopic Mass:57.96211
Topological Polar Surface Area:0
Heavy Atom Count:2
Formal Charge:0
Complexity:2
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:2

Safety and Handling

【Hazard Codes】
T:Toxic;
【Risk Statements】
R23/24/25
【Safety Statements 】
S26;S45
【HazardClass】
6.1
【Hazard Note】

Harmful

【PackingGroup 】
III
【Sensitive】
Hygroscopic
【Transport】
UN 1812
【Formulations/Preparations】
Grade: technical, free of arsenic, CP
【DOT Emergency Guidelines】
/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Health: 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.
/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Fire or Explosion: 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.
/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate enclosed areas.
/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.
/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Evacuation: ... Fire: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.
/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Fire: Small fires: Dry chemical, CO2 or water spray. Large fires: Dry chemical, CO2, alcohol-resistant foam or water spray. Move containers from fire area if you can do it without risk. Dike fire control water for later disposal; do not scatter the material. Fire involving tanks or car/trailer loads: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire.
/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Spill or Leak: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ 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 respiration 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 running 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.
【Reactivities and Incompatibilities】
Platinum is attacked by bromine trifluoride at 280 deg C in presence of potassium fluoride.
【Specification】

The Potassium fluoride, with its?CAS registry number 7789-23-3, is a kind of white powder or crystals with a sharp saline taste. This chemical is hygroscopic and stable but incompatible with strong acids, strong bases. Besides, it is easily soluble in water, hydrofluoric acid and liquid ammonia and slightly soluble in alcohol and acetone.

The characteristics of this chemical are as below: (1)H-Bond Acceptor: 1; (2)Exact Mass: 57.96211; (3)MonoIsotopic Mass: 57.96211; (4)Heavy Atom Count: 2; (5)Complexity: 2; (6)Covalently-Bonded Unit Count: 2; (7)Density: 2.48; (8)Melting point: 860 oC; (9)Boiling point: 1505 oC; (10)Water solubility: 92.3 g/100 mL (18 oC).

As to its usage, it is widely applied in many ways. It could be used for etching a variety of glass and welding flux. It is also used as a wood preservative, pesticide and agricultural pesticide intermediate as well as a pharmaceutical industrial raw material and organic fluorinated material.

When you are dealing with this chemical, you should be cautious. For being a kind of toxic chemical, it may at low levels cause damage to health and it is harmful if by inhalation, in contact with skin and if swallowed. Therefore, if in case of contact with eyes, rinse immediately with plenty of water and seek medical advice, and if in case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).

Additionally, you could convert the following datas into the molecular structure:
(1)Canonical SMILES: [F-].[K+]
(2)InChI: InChI=1S/FH.K/h1H;/q;+1/p-1
(3)InChIKey: NROKBHXJSPEDAR-UHFFFAOYSA-M?

Below are the toxicity information of this chemical:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
frog LDLo subcutaneous 420mg/kg (420mg/kg) ? Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. Vol. 124, Pg. 133, 1937.
guinea pig LDLo oral 250mg/kg (250mg/kg) ? "Merck Index; an Encyclopedia of Chemicals, Drugs, and Biologicals", 11th ed., Rahway, NJ 07065, Merck & Co., Inc. 1989Vol. 11, Pg. 1214, 1989.
mouse LD50 intraperitoneal 40030ug/kg (40.03mg/kg) ? Deutsche Zahnaerztliche Zeitschrift. Vol. 34, Pg. 484, 1979.
?
rat LD50 intraperitoneal 64mg/kg (64mg/kg) ? U.S. Atomic Energy Commission, University of Rochester, Research and Development Reports. Vol. UR-154, Pg. 1951,
rat LD50 oral 245mg/kg (245mg/kg) ? U.S. Atomic Energy Commission, University of Rochester, Research and Development Reports. Vol. UR-154, Pg. 1951,

【Report】

The Potassium fluoride, with its?CAS registry number 7789-23-3, is a kind of white powder or crystals with a sharp saline taste. This chemical is hygroscopic and stable but incompatible with strong acids, strong bases. Besides, it is easily soluble in water, hydrofluoric acid and liquid ammonia and slightly soluble in alcohol and acetone.

The characteristics of this chemical are as below: (1)H-Bond Acceptor: 1; (2)Exact Mass: 57.96211; (3)MonoIsotopic Mass: 57.96211; (4)Heavy Atom Count: 2; (5)Complexity: 2; (6)Covalently-Bonded Unit Count: 2; (7)Density: 2.48; (8)Melting point: 860 oC; (9)Boiling point: 1505 oC; (10)Water solubility: 92.3 g/100 mL (18 oC).

As to its usage, it is widely applied in many ways. It could be used for etching a variety of glass and welding flux. It is also used as a wood preservative, pesticide and agricultural pesticide intermediate as well as a pharmaceutical industrial raw material and organic fluorinated material.

When you are dealing with this chemical, you should be cautious. For being a kind of toxic chemical, it may at low levels cause damage to health and it is harmful if by inhalation, in contact with skin and if swallowed. Therefore, if in case of contact with eyes, rinse immediately with plenty of water and seek medical advice, and if in case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).

Additionally, you could convert the following datas into the molecular structure:
(1)Canonical SMILES: [F-].[K+]
(2)InChI: InChI=1S/FH.K/h1H;/q;+1/p-1
(3)InChIKey: NROKBHXJSPEDAR-UHFFFAOYSA-M?

Below are the toxicity information of this chemical:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
frog LDLo subcutaneous 420mg/kg (420mg/kg) ? Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. Vol. 124, Pg. 133, 1937.
guinea pig LDLo oral 250mg/kg (250mg/kg) ? "Merck Index; an Encyclopedia of Chemicals, Drugs, and Biologicals", 11th ed., Rahway, NJ 07065, Merck & Co., Inc. 1989Vol. 11, Pg. 1214, 1989.
mouse LD50 intraperitoneal 40030ug/kg (40.03mg/kg) ? Deutsche Zahnaerztliche Zeitschrift. Vol. 34, Pg. 484, 1979.
?
rat LD50 intraperitoneal 64mg/kg (64mg/kg) ? U.S. Atomic Energy Commission, University of Rochester, Research and Development Reports. Vol. UR-154, Pg. 1951,
rat LD50 oral 245mg/kg (245mg/kg) ? U.S. Atomic Energy Commission, University of Rochester, Research and Development Reports. Vol. UR-154, Pg. 1951,

【Disposal Methods】
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.

Use and Manufacturing

【Use and Manufacturing】
Methods of Manufacturing

Prepared by thermal decomposition of KHF2 or by neutralizing HF with K2CO3.
Potassium fluoride is prepared by reacting potassium carbonate (or KOH) with aqueous hydrofluoric acid.
U.S. Production

Production volumes for non-confidential chemicals reported under the Inventory Update Rule. Year Production Range (pounds) 1986 10,000 - 500,000 1990 10,000 - 500,000 1994 10,000 - 500,000 1998 No Reports 2002 10,000 - 500,000

Biomedical Effects and Toxicity

【Biomedical Effects and Toxicity】
This study was designed to quantitate and compare the major features of the short-term pharmacokinetics of fluoride--i.e., the plasma (Cp), renal (Cr), and extra-renal (Cer) clearances--in young adult dogs, cats, rabbits, rats, and hamsters. Plasma and urine samples were collected for seven h after the iv administration of fluoride (0.5 mg F/kg). Cp ranged from 3.5 to 8.6 mL/min/kg in the dog and hamster, respectively. Cr ranged from less than 1.5 mL/min/kg in the dog and rabbit to about 3.5 mL/min/kg in the rat and hamster. Cer ranged from 2.1 mL/min/kg in the dog to over 4.5 mL/min/kg in the cat, rabbit, and hamster. It was concluded that (1) there are major quantitative differences in the metabolic handling of fluoride among the five species, and that (2) Cp, Cr, and Cer values of the young adult dog, when factored for body weight, resemble those of the young adult human most closely. /Fluoride/
The purpose of this review is to present the general characteristics of the metabolism of fluoride particularly as it occurs when ingested with fluoridated salt. Following the absorption of salt-borne fluoride from the stomach and intestines, its metabolism is identical to that of water-borne fluoride or other vehicles containing ionized fluoride. Because fluoridated salt is almost always ingested with food, however, absorption from the gastrointestinal tract may be delayed or reduced. Reports dealing with this subject have shown that fluoride absorption is delayed and, therefore, peak plasma concentrations are lower than when fluoride is ingested with water. The amount of ingested fluoride that is finally absorbed, however, is not appreciably affected unless the meal is composed mainly of components with high calcium concentrations. In this case, the extent of absorption can be reduced by as much as 50%. Fluoridated salt is also ingested less frequently than fluoridated water. Data are presented to show that the dose size and frequency of ingestion have only minor effects on fluoride retention in the body and on the concentrations in plasma, bone and enamel. Finally, calculations are presented to show that the risk of acute toxicity from fluoridated salt is virtually non-existent. /Fluoride/ [Whitford GM; Schweiz Monatsschr Zahnmed 115 (8): 675-8 (2005)] PubMed Abstract

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