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Potassium sulfate

Potassium sulfate

Basic Information

CAS No.: 7778-80-5
Molecular Formula: K2O4S
Molecular Weight: 174.2592

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Product Details

Potassium sulfate (K2SO4) is a kind of chemical compounds that is commonly used in agriculture. The dominant application of potassium sulfate is as a fertilizer, which is commonly applied to offer both potassium and sulfur, thus improving the quality and yield of crops growing in soils that lack an adequate supply of this essential elements. Besides, the crude potassium sulfate is sometimes employed in the production of glass. It also has applications in other industries, which is used as a flash reducer in artillery propellant charges and as an alternative blast media similar to soda in the process of soda blasting.


Chemical Properties
PropertyValue

Melting point

1067°C

Boiling point

1689°C

Density

2.66

Fp

1689°C

Storage temp.

Inert atmosphere,Room Temperature

Solubility

H2O: 0.5 M at 20 °C, clear, colorless

Form

Very Fine Crystals or Powder

Color

White

Specific Gravity

2.662

Odor

Odorless

PH Range

~7

PH

5.5-7.5 (25℃, 0.5M in H2O)

Water Solubility

110 g/L (20 ºC)

λmax

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

Merck

14,7674

crystal system

Nogata

Space group

Pnma

Lattice constant

a/nmb/nmc/nmα/oβ/oγ/oV/nm30.74560.57761.008909090

Dielectric constant

5.9(0.0℃)

Stability:

Stable.

InChIKey

OTYBMLCTZGSZBG-UHFFFAOYSA-L

CAS DataBase Reference

7778-80-5(CAS DataBase Reference)

NIST Chemistry Reference

Potassium sulfate(7778-80-5)

EPA Substance Registry System

Potassium sulfate (7778-80-5)


Safety Information

PropertyValue

Safety Statements

22-24/25

WGK Germany

1

RTECS

TT5900000

TSCA

Yes

HS Code

31043000

Hazardous Substances Data

7778-80-5(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: 6600 mg/kg



Product Usage

Potassium Sulfate (SOP) is a high-quality, chloride-free potassium fertilizer and an essential chemical raw material. In agriculture, it is the premier fertilizer for chlorine-sensitive crops such as tobacco, grapes, citrus, and various vegetables, as well as sulfur-demanding plants; it significantly boosts yields while enhancing fruit color and flavor. Industrially, it is a key ingredient in the production of glass, dyes, and perfumes. In the pharmaceutical industry, it is used as a laxative or a reagent for electrolyte balance. Furthermore, in food processing, it serves as a salt substitute, flavoring agent, or dough conditioner. In laboratory settings, it is frequently employed as an analytical reagent and a catalyst in nitrogen determination.

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