221325
Potassium sulfate
ACS reagent, ≥99.0%, powder or crystals
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Fórmula lineal:
K2SO4
Número CAS:
Peso molecular:
174.26
NACRES:
NB.24
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
231-915-5
MDL number:
Assay:
≥99.0%
Grade:
ACS reagent
Form:
powder or crystals
Solubility:
water: soluble (120 g/l)
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ACS reagent
Quality Level
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
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.
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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)
Eagleson M.
Concise Encyclopedia Chemistry, 890-890 (1994)
Sulfonation of benzocrown ethers by potassium sulfate in polyphosphoric acid.
Grebenyuk AD, et al.
Chemistry of Heterocyclic Compounds, 37(7), 822-826 (2001)