Description
Potassium chloride appears as white colorless cubic crystals. Strong saline taste. (NTP, 1992);DryPowder; DryPowder, Liquid; Liquid; OtherSolid; OtherSolid, Liquid; PelletsLargeCrystals; PelletsLargeCrystals, Liquid;Colourless, elongated, prismatic or cubital crystals or white granular powder. Odourless;COLOURLESS HYGROSCOPIC CRYSTALS.
IUPAC Name
potassium chloride
Molecular Weight
74.55
Molecular Formula
ClK
Canonical SMILES
[Cl-].[K+]
InChI
InChI=1S/ClH.K/h1H;/q;+1/p-1
InChI Key
WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Boiling Point
Sublimes at 2732° F (NTP, 1992);Sublimes 1500 °C
Melting Point
1418 °F (NTP, 1992);Mp 773 °;771 °C;770-773 °C
Density
1.984 (NTP, 1992);1.988 g/cu cm;1.98 g/cm³
Solubility
greater than 100 mg/mL at 68° F (NTP, 1992);Freely soluble;Freely soluble in water. Insoluble in ethanol;In water, 35.5 g/100 g water at 25 °C;1 g dissolves in 2.8 mL water, 1.8 mL boiling water ... /addtion of/ hydrochloric acid, or sodium chloride, or magnesium chloride, diminishes its solubility in water;Insoluble in ether, acetone;1 g dissolves in 14 mL glycerol, about 250 mL alcohol. Insoluble in ether, acetone.;Soluble in diethyl ether; Sparingly soluble in ethanol;Water solubility (g/100g) = 28.1 at 1 °C; 31.2 at 10 °C; 34.2 at 20 °C; 37.2 at 30 °C; 40.2 at 40 °C; 43.1 at 50 °C;Solubility in water at 20 °C: good
Color Form
White crystals or crystalline powder;Colorless crystals;Colorless, elongated, prismatic, or cubical crystals or as a white granular powder
Complexity
2
Covalently-Bonded Unit Count
2
EC Number
231-211-8
Exact Mass
73.9326
Formal Charge
0
H-Bond Acceptor
1
H-Bond Donor
0
Heavy Atom Count
2
ICSC Number
1450
MDL Number
MFCD00011360
MeSH Entry Terms
Chloride, Potassium;Potassium Chloride;Slow-K
Monoisotopic Mass
73.9326
Odor
Odorless
Other Experimental
Nonhygroscopic;Cubic crystals. Natural sylvite is opalescent or milky white. Sylvite is often colored red by hematite. Mohs Hardness = 2; Index of refraction = 1.4903; Density: 1.99 g/cu cm /Sylvite/;Density of saturated aq soln at 15 °C: 1.172;Specific heat = 693.7 J/kg-K; Heat of fusion = 337.7 kJ/mol; Enthalpy of formation = -436.7 kJ/mol; Entropy (S) = 82.55 J/mol-K; Dielectric constant (at 1X10+6 Hz) = 4.68; Thermal coeff of expansion (15-25 °C) = 33.7X10-6/K; Boiling point of saturated solution at 1.013 bar = 108.6 °C
Physical State
White to clear liquid
Rotatable Bond Count
0
RTECS Number
TS8050000
UNII
660YQ98I10
