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1.05153

Supelco

Potassium sulfate

for analysis EMSURE® ACS,ISO,Reag. Ph Eur

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Synonym(s):
Potassium sulfate, Potassium pyrosulfate
Empirical Formula (Hill Notation):
K2O4S
CAS Number:
Molecular Weight:
174.26
MDL number:
UNSPSC Code:
12352302
EC Index Number:
231-915-5
NACRES:
NA.21

grade

ACS reagent

Quality Level

agency

reag. ISO
reag. Ph. Eur.

product line

EMSURE®

assay

≥99.0% (alkalimetric)

form

solid

potency

6600 mg/kg LD50, oral (Rat)

impurities

≤0.01% Insoluble matter

pH

5.5-8.5 (20 °C, 50 g/L in H2O)

bp

1689 °C/1013 hPa

mp

1069 °C

density

2.66 g/cm3 at 20 °C

bulk density

800 kg/m3

anion traces

chloride (Cl-): ≤0.0005%

cation traces

As: ≤0.0002%
Ca: ≤0.005%
Fe: ≤0.0005%
Mg: ≤0.002%
N: ≤0.0005%
Na: ≤0.02%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

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

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Application

  • Fertilizer application alters cadmium and selenium bioavailability in soil-rice system with high geological background levels: This study explores how different fertilizer applications, including potassium sulfate, affect the bioavailability of cadmium and selenium in rice cultivated in areas with naturally high levels of these elements (Zhou et al., 2024).
  • Exogenous application of nano-silicon, potassium sulfate, or proline enhances physiological parameters, antioxidant enzyme activities, and agronomic traits of diverse rice genotypes under water deficit conditions: Research indicates that potassium sulfate, along with nano-silicon and proline, can improve water stress resilience in rice by enhancing physiological traits and antioxidant activities (Abd-El-Aty et al., 2024).
  • Size-Independent Nucleation and Growth Model of Potassium Sulfate from Supersaturated Solution Produced by Stirred Crystallization: This paper presents a model of potassium sulfate crystallization that is independent of crystal size, providing insights into the controlled crystallization processes used in industry (Zheng, 2023).
  • Prediction models of macro-nutrient content in plant organs of Cucumis melo in response to soil elements using support vector regression: This study includes potassium sulfate among the soil elements analyzed for their impact on nutrient uptake in melon, with models predicting how different soil treatments affect plant growth (Keshtehgar et al., 2023).
  • [Effects of chemical fertilizer reduction and organic fertilizer substitution on yield and quality of Saposhnikovia divaricata]: This research evaluates the effects of reducing chemical fertilizers, including potassium sulfate, and substituting with organic options, highlighting changes in plant yield and quality (Li et al., 2023).

Linkage

Replaces: PX1595; PX1595-1; PX1595-5; PX1595-6; PX1595-20

Analysis Note

Assay (alkalimetric): ≥ 99.0 %
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water, 25 °C): 5.5 - 7.5
Chloride (Cl): ≤ 0.0005 %
Total nitrogen (N): ≤ 0.0005 %
Heavy metals (as Pb): ≤ 0.0005 %
As (Arsenic): ≤ 0.0002 %
Ca (Calcium): ≤ 0.005 %
Fe (Iron): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.002 %
Na (Sodium): ≤ 0.02 %
Corresponds to ACS,ISO,Reag. Ph Eur

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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