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223492

Potassium sulfate

ACS reagent, ≥99.0%, powder

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A propos de cet article

Formule linéaire :
K2SO4
Numéro CAS:
7778-80-5
Poids moléculaire :
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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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

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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wgk

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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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Numéro d'article de commerce international

RéférenceGTIN
223492-2.5KG04061832562834
223492-500G04061838778505