Home Categories Inorganic chemistry Potassium fluoride
A6740212

Potassium fluoride , AR, powder, 99.0% , 7789-23-3

Synonym(s):
Potassium Fluoride;Potassium monofluoride;Potassium monofluoride (KF)

CAS NO.:7789-23-3

Empirical Formula: FK

Molecular Weight: 58.1

MDL number: MFCD00011398

EINECS: 232-151-5

Update time: 2022-07-08

PRODUCT Properties

Melting point: 858 °C (lit.)
Boiling point: 1505 °C
Density  2.48
vapor density  2 (vs air)
vapor pressure  1.3 hPa (885 °C)
refractive index  1.363
Flash point: 1505°C
storage temp.  Store at +5°C to +30°C.
solubility  H2O: 1 M at 20 °C, clear, colorless
form  spray-dried
Specific Gravity 2.481
color  White
PH 7.0-8.5 (25℃, 1M in H2O)
Odor Odorless
Water Solubility  92.3 g/100 mL (18 ºC)
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Crystal Structure NaCl type
crystal system Cube
Merck  14,7632
BRN  3902818
Space group Fm3m
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.5340.5340.5349090900.1526

Exposure limits ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
Stability: Stable. Protect from moisture. Incompatible with strong acids, strong bases.
InChIKey NROKBHXJSPEDAR-UHFFFAOYSA-M
LogP -0.77 at 25℃

Description and Uses

Potassium fluoride is used in metal finishing, batteries, coatings and photographic chemicals. It is utilized for the study of ion-specific swelling and de-swelling of ampholytic polymer gels as well as in the measurement of electronic polarizabilities of ions in polymers of alkali halides. It finds application in the electronic industry as a metal surface treatment product. It is used as a preservative, a food additive, a catalyzer and a water absorbing agent. In the Finkelstein reaction, it is actively involved in the conversion of chlorocarbons to fluorocarbons using polar solvents like dimethyl formamide and ethylene glycol.

Safety

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  25-23/24/25
Safety Statements  45-26-36/37
RIDADR  UN 1812 6.1/PG 3
WGK Germany  3
RTECS  TT0700000
3
Hazard Note  Harmful
TSCA  Yes
HS Code  2826 19 90
HazardClass  6.1
PackingGroup  III
Toxicity MLD in guinea pigs (mg/kg): 250 orally, 350 s.c.; in frogs (mg/kg): 375 s.c. (Simonin)

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