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Potassium Chloride

Potassium Chloride

Basic Information

CAS No.: 7447-40-7
Molecular Formula: KCl
Molecular Weight: 74.55

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Product Details

Potassium chloride (KCl) is a metal halide salt that is used in a variety of areas. The dominant application of potassium chloride is to serve as a fertilizer, which offers potassium to plants and prevents them from certain diseases. Besides, it can be applied in food and medical industry. As a treatment for hypokalemia, potassium chloride pills are taken to balance the blood's potassium levels and prevent potassium deficiency in the blood. In food industry, it serves as a electrolyte replenisher and a good salt substitute for food, as well as a firming agent to give consistent texture to food, thus to strengthen its structure.


Chemical Properties

PropertyValue

Melting point

770 °C (lit.)

Boiling point

1420°C

Density

1.98 g/mL at 25 °C (lit.)

Bulk density

1000kg/m3

Refractive index

n20/D 1.334

Fp

1500°C

Storage temp.

2-8°C

Solubility

H2O: soluble

Form

random crystals

Color

White

Specific Gravity

1.984

Odor

Odorless

PH Range

7

Flame Color

Light Purple

PH

5.5-8.0 (20℃, 50mg/mL in H2O)

Biological source

rabbit

Water Solubility

340 g/L (20 ºC)

Sensitive

Hygroscopic

λmax

λ: 260 nm Amax: 0.02λ: 280 nm Amax: 0.01

Crystal Structure

NaCl type

crystal system

Cube

Merck

14,7621

Sublimation

1500 ºC

BRN

1711999

Space group

Fm3m

Lattice constant

a/nmb/nmc/nmα/oβ/oγ/oV/nm30.62930.62930.62939090900.2492

Dielectric constant

4.6(Ambient)

BCS Class

1

Stability:

Stable. Incompatible with strong oxidizing agents, strong acids. Protect from moisture. Hygroscopic.

InChIKey

WCUXLLCKKVVCTQ-UHFFFAOYSA-M

CAS DataBase Reference

7447-40-7(CAS DataBase Reference)

NIST Chemistry Reference

Potassium chloride(7447-40-7)

EPA Substance Registry System

Potassium chloride (7447-40-7)


Safety Information

PropertyValue
Hazard symbolsXi, C, F, Xn, T
Hazard class codes36-34-11-36/37/38-40-61-60
Safety descriptions24/25-39-26-22-23-45-36/37/39-16-36/37-53
UN dangerous goods numberUN 1824 8 / PGII
WGK Germany1
RTECS numberTS8050000
F8
TSCATSCA listed
HS code31042090
Storage class13 - Non-combustible solids
Hazardous substances data7447-40-7 (Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 2600 mg/kg


Product Usage

Potassium Chloride is an extensively utilized inorganic salt that plays a critical role in agriculture, industry, and medicine. In agriculture, it serves as the most prominent potassium fertilizer (MOP), significantly enhancing crop disease resistance and drought tolerance while effectively boosting grain yields and fruit quality. Within the industrial sector, it is the foundational raw material for producing potassium salts such as potassium hydroxide and potassium carbonate; in oil drilling, it acts as a shale inhibitor to effectively prevent wellbore collapse. Furthermore, in food processing, it is frequently used as a sodium-substitute in low-sodium salts to reduce intake. In medicine, it is essential for preparing electrolyte-replenishing injections to treat hypokalemia.

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