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Potassium hydrogen fluoride

Description References
Potassium hydrogen fluoride
Potassium hydrogen fluoride
CAS No.
7789-29-9
Chemical Name:
Potassium hydrogen fluoride
Synonyms
K(HF2);NA 1811;POTASSIUM BIFLUORIDE;Potassium hydrogen f;bifluoruredepotassium;potassiumacidfluoride;Kaliumhydrogenfluorid;Potassiumhydrofluoride;Potassium acid fluoride;Bifluorure de potassium
CBNumber:
CB8854344
Molecular Formula:
F2HK
Formula Weight:
78.1
MOL File:
7789-29-9.mol

Potassium hydrogen fluoride Properties

Melting point:
239 °C(lit.)
Density 
2.37 g/mL at 25 °C(lit.)
form 
Crystals or Crystalline Powder
color 
White to light gray
Water Solubility 
39 g/100 mL (20 ºC)
Sensitive 
Hygroscopic
Merck 
14,7610
CAS DataBase Reference
7789-29-9(CAS DataBase Reference)
NIST Chemistry Reference
Potassium hydrogen fluoride(7789-29-9)
EPA Substance Registry System
Potassium fluoride (K(HF2))(7789-29-9)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  T,C
Risk Statements  25-34
Safety Statements  26-36/37/39-45-37-22
RIDADR  UN 3421 8/PG 2
WGK Germany  1
RTECS  TS6650000
3
Hazard Note  Corrosive
TSCA  Yes
HazardClass  8
PackingGroup  II
Symbol(GHS):
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
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
Precautionary statements:
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Potassium hydrogen fluoride price More Price(15)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 239283 Potassium hydrogenfluoride 99% 7789-29-9 25g $43.8 2018-11-13 Buy
Sigma-Aldrich 239283 Potassium hydrogenfluoride 99% 7789-29-9 2.5kg $242 2018-11-13 Buy
Alfa Aesar 011557 Potassium hydrogen fluoride, 99+% (metals basis) 7789-29-9 2kg $164 2018-11-16 Buy
Alfa Aesar 011557 Potassium hydrogen fluoride, 99+% (metals basis) 7789-29-9 500g $45 2018-11-16 Buy
Strem Chemicals 93-1905 Potassium hydrogen fluoride, 99+% 7789-29-9 500g $44 2018-11-13 Buy

Potassium hydrogen fluoride Chemical Properties,Uses,Production

Description

Potassium hydrogen fluoride is used as an etchant to etch glass surface and it is used in the cleaning products. It is used as a fluorinating agent for fluorinated organic compounds, which could be applied as finishing agent for fabrics, components of extinguishing agents, electroplating bathes, lubricating oils, oxygen carriers in blood substitutes. For example, potassium hydrogen fluoride is used as fluorinating agent for ring opening of epoxides and cyclopropanes and in the synthesis of trifluoroborates from various organoborons. It may also serve as a fluoride ion source for the nucleophilic ring-opening reaction of epoxide.

References

[1] Gary A. Molander, David J. Cooper and Stephen W. Wright, Potassium Hydrogen Fluoride, e-EROS Encyclopedia of Reagents for Organic Synthesis, 2001
[2] Bernd Basner, Houben-Weyl Methods of Organic Chemistry Vol. E 10b/1, 4th Edition, 1999
[3] Francis I. Onuska and Francis W. Karasek, Open Tubular Column Gas Chromatography in Environmental Sciences, 1984
[4] Michael Howe, Wheel cleaning composition containing acid fluoride salts, Patent “US 5556833 A”, 1996
[5] Grzegorz Lewandowski, Egbert Meissner and Eugeniusz Milchert, Special applications of fluorinated organic compounds, Journal of Hazardous Materials, 2006, vol. 136, 385-391

Chemical Properties

WHITE TO LIGHT GREY CRYSTALS OR CRYSTALLINE POWDER

Uses

In the preparation of pure potassium fluoride; as an electrolyte in the manufacture of fluorine; frosting glass; treating coal to prevent slag formation; flux for silver solders; catalyst in the alkylation of benzene with olefins.

General Description

Colorless crystals, corrosive to tissues, etches glass.

Air & Water Reactions

Water soluble giving strongly acidic solutions.

Reactivity Profile

Acidic salts, such as Potassium hydrogen fluoride, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.

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.

Purification Methods

It crystallises from water. It is very soluble in hot H2O and 41% at 21o. [Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 237 1963.]

Potassium hydrogen fluoride Preparation Products And Raw materials

Raw materials

Preparation Products


Potassium hydrogen fluoride Suppliers

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