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223492

Potassium sulfate

Name: Potassium sulfate
Brand: SIGALD

ACS reagent, ≥99.0%, powder

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About This Item

Linear Formula:

K₂SO₄

CAS Number:

7778-80-5

Molecular Weight:

174.26

NACRES:

NB.24

PubChem Substance ID:

329752311

UNSPSC Code:

12352302

EC Number:

231-915-5

MDL number:

MFCD00011388

Assay:

≥99.0%

Grade:

ACS reagent

Form:

powder

Solubility:

water: soluble (120 g/l)

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Properties

grade

ACS reagent

Quality Level

200

agency

suitable for EPA 300

assay

≥99.0%

form

powder

impurities

≤0.01% insolubles, ≤5 ppm N compounds

pH

5.5-5.8 (25 °C, 5%)

solubility

water: soluble (120 g/l)

anion traces

chloride (Cl^-): ≤0.001%

cation traces

Ca: ≤0.01%, Fe: ≤5 ppm, Mg: ≤0.005%, Na: ≤0.02%, heavy metals: ≤5 ppm (by ICP)

SMILES string

[K+].[K+].[O-]S([O-])(=O)=O

InChI

1S/2K.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2

InChI key

OTYBMLCTZGSZBG-UHFFFAOYSA-L

Description

General description

Potassium sulfate (K₂SO₄)is a colorless compound having rhombic or hexagonal crystals. It readily forms double salts with the sulfate of trivalent metals, which are known as Alums. It also forms double salts with calcium, magnesium and sodium sulfates. It is widely employed as a fertilizer. K₂SO₄ can be extracted from various complex salts in nature, such as Kainite, langbeinite and carpathein mineral ores. It can be synthesized by reacting KCl and sulfuric acid, via Mannheim process.

Potassium sulfate is a water-soluble inorganic salt that is commonly used in fertilizers. It can be prepared by reacting phosphogypsum and potassium chloride. K₂SO₄ can form needle-like mullite particles on heating with aluminum sulfate and silicon dioxide. Its application to the soil has shown to minimize bronzing of rice plants.

Application

Potassium sulfate may be used as a sulfonating agent in the preparation of 4′-dibenzo-18-crown-6-sulfonic acid via sulfonation of dibenzo-18-crown-6.

Potassium sulfate may be used in the preparation of needlelike mullite particles. It may be used as a buffer for minimizing the adsorption of proteins on fused-silica capillaries in capillary zone electrophoresis.

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Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Global Trade Item Number

SKU	GTIN
223492-2.5KG	04061832562834
223492-500G	04061838778505