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Merck
CN

463671

Potassium hydrogenfluoride

≥99.99%

Synonym(s):

Potassium bifluoride, Potassium hydrogen difluoride

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About This Item

Linear Formula:
KHF2
CAS Number:
7789-29-9
Molecular Weight:
78.10
UNSPSC Code:
12352300
PubChem Substance ID:
329757152
EC Number:
232-156-2
MDL number:
MFCD00011403

Key Documents

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InChI key

VBKNTGMWIPUCRF-UHFFFAOYSA-M

InChI

1S/2FH.K/h2*1H;/q;;+1/p-1

SMILES string

[F-].[K+].F[H]

assay

≥99.99%

mp

239 °C (lit.)

density

2.37 g/mL at 25 °C (lit.)

Application

Used in the hydrofluorination of unsaturated compounds.

pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

signalword

Danger

hcodes

H301,H314

Hazard Classifications

Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B

Storage Class

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges, type P3 (EN 143) respirator cartridges

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
01301HD
09019KA
05423EB
06320LQ

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Journal of the Chemical Society. Chemical Communications, 1891-1891 (1995)
Reaction of 2-deoxy-6-O-[2,3-dideoxy-4,6-O-isopropylidene-2,3- (N-tosylepimino)-alpha-D-mannopyranosyl]-4,5-O-isopropylidene-1,3-di-N- tosylstreptamine with potassium hydrogenfluoride.
Y Kobayashi et al.
Carbohydrate research, 229(2), 363-368 (1992-05-22)
Gary A Molander et al.
The Journal of organic chemistry, 73(17), 6841-6844 (2008-08-07)
A number of alkynyl pinacolboronates bearing various functional groups were synthesized according to literature methods. These were then stereoselectively reduced to the cis-alkenyl pinacolboronates via hydroboration with dicyclohexylborane followed by chemoselective protodeboronation using acetic acid. Treatment with potassium hydrogen fluoride
Matthew J Hesse et al.
Angewandte Chemie (International ed. in English), 51(50), 12444-12448 (2012-11-07)
E-allylic boronic esters undergo a highly diastereoselective protodeboronation with TBAF⋅3 H(2)O to give Z-trisubstituted alkenes. The selectivity can be switched to give predominantly the E-alkene instead by using KHF(2)/TsOH (see scheme). The utility of the methodology has been illustrated in a
Hoang-Duy Nguyen et al.
Angewandte Chemie (International ed. in English), 54(37), 10862-10866 (2015-07-28)
A facile approach for coating red fluoride phosphors with a moisture-resistant alkyl phosphate layer with a thickness of 50-100 nm is reported. K2 SiF6 :Mn(4+) particles were prepared by co-precipitation and then coated by esterification of P2 O5 with alcohols (methanol

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