ChemicalBook CAS DataBase List 7789-29-9

7789-29-9

Name	Potassium hydrogen fluoride
CAS	7789-29-9
EINECS(EC#)	232-156-2
Molecular Formula	F2HK
MDL Number	MFCD00011403
Molecular Weight	78.1
MOL File	7789-29-9.mol

Synonyms

POTASSIUM BIFLUORIDE POTASSIUM HYDROGEN DIFLUORIDE POTASSIUM HYDROGEN FLUORIDE Bifluorure de potassium bifluoruredepotassium Hydrogen potassium fluoride hydrogenpotassiumfluoride K(HF2) NA 1811 Potassium acid fluoride Potassium fluoride (K(HF2)) Potassium monohydrogen difluoride potassiumacidfluoride potassiumfluoride(k(hf2)) Potassiumhydrofluoride potassiumhydrogenfluoride,solution potassiummonohydrogendifluoride POTASSIUM HYDROGENFLUORIDE, 99.99+% POTASSIUM HYDROGENFLUORIDE 3 M IN WATER Potassiumhydrogenfluoride,97%

Chemical Properties

Appearance	WHITE TO LIGHT GREY CRYSTALS OR CRYSTALLINE POWDER
Melting point	239 °C(lit.)
density	2.37 g/mL at 25 °C(lit.)
solubility	insoluble in ethanol
form	Crystals or Crystalline Powder
color	White to light gray
Specific Gravity	2.37
Odor	Slightly acidic odor
Water Solubility	39 g/100 mL (20 ºC)
Specific Heat Capacity	Cp(crystal):0.984635J/(g·K),at 25℃
Sensitive	Hygroscopic
Merck	14,7610
Exposure limits	ACGIH: TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3
InChI	InChI=1S/2FH.K/h2*1H;/q;;+1/p-1
InChIKey	VBKNTGMWIPUCRF-UHFFFAOYSA-M
SMILES	F.[K+].[F-]
CAS DataBase Reference	7789-29-9(CAS DataBase Reference)
NIST Chemistry Reference	Potassium hydrogen fluoride(7789-29-9)
EPA Substance Registry System	7789-29-9(EPA Substance)

Safety Data

Symbol(GHS)	GHS05,GHS06
Signal word	Danger
Hazard statements	H301-H314
Precautionary statements	P260-P280-P301+P310+P330-P301+P330+P331-P303+P361+P353-P305+P351+P338+P310
Hazard Codes	T,C
Risk Statements	R25:Toxic if swallowed. R34:Causes burns. less more
Safety Statements	S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . S37:Wear suitable gloves . S22:Do not breathe dust . less more
RIDADR	UN 3421 8/PG 2
WGK Germany	1
RTECS	TS6650000
F	3
Hazard Note	Corrosive
TSCA	Yes
REACH Registrations	Active
HazardClass	8
PackingGroup	II
HS Code	28261990
Storage Class	6.1B - Non-combustible acute toxic Cat. 1 and 2 very toxic hazardous materials
Hazard Classifications	Acute Tox. 3 Oral Eye Dam. 1 Skin Corr. 1B
Safety Profile	A poison. Very corrosive and reactive. A corrosive irritant to the eyes, skin, and mucous membranes. When heated to decomposition it emits toxic fumes of F and K2O. See also FLUORIDES and HYDROFLUORIC ACID. less more

Raw materials And Preparation Products

Hazard Information

General Description

Colorless crystals, corrosive to tissues, etches glass.

Reactivity Profile

Acidic salts, such as POTASSIUM BIFLUORIDE(7789-29-9), 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.

Air & Water Reactions

Water soluble giving strongly acidic solutions.

Hazard

Corrosive 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.

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.

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.

Uses

Potassium hydrogen fluoride is widely used as an etchant in glass and cleaning products. It finds an important application in the synthesis of special optical glass viz. crown and crown flint glass and as a catalyst for polymerization. It is involved in the manufacturing of wood preservatives, soldering agents and brazing. It is also used in the manufacturing of organic and inorganic fluorine compounds.

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.]

Material Safety Data Sheet(MSDS)

Questions And Answer

Spectrum Detail

Well-known Reagent Company Product Information

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7789-29-9

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

Fire Hazard

Chemical Properties

Uses

Uses

Purification Methods

Material Safety Data Sheet(MSDS)

Questions And Answer

Description

References

Spectrum Detail

Well-known Reagent Company Product Information

Supplier

Related Products