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221325

Potassium sulfate

Name: Potassium sulfate
Brand: SIGALD

ACS reagent, ≥99.0%, powder or crystals

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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:

329752258

UNSPSC Code:

12352302

EC Number:

231-915-5

MDL number:

MFCD00011388

Assay:

≥99.0%

Grade:

ACS reagent

Form:

powder or crystals

Solubility:

water: soluble (120 g/l)

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Properties

grade

ACS reagent

Quality Level

200

assay

≥99.0%

form

powder or crystals

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 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.

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Sulfonation of benzocrown ethers by potassium sulfate in polyphosphoric acid.

Grebenyuk AD, et al.

Chemistry of Heterocyclic Compounds, 37(7), 822-826 (2001)

Rice bronzing in Nigeria caused by nutrient imbalances and its control by potassium sulfate application.

Yamauchi M.

Plant and Soil, 117(2), 275-286 (1989)

Conversion of phosphogypsum to potassium sulfate.

Aagli A, et al.

Journal of Thermal Analysis and Calorimetry, 82(2), 395-399 (2005)

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Global Trade Item Number

SKU	GTIN
221325-2.5KG	04061837768668
221325-500G	04061838777164