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12658

Sigma-Aldrich

Potassium sulfate

meets analytical specification of Ph. Eur., 99-101%

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About This Item

Fórmula lineal:
K2SO4
Número de CAS:
7778-80-5
Peso molecular:
174.26
EC Number:
231-915-5
MDL number:
MFCD00011388
UNSPSC Code:
12352302
PubChem Substance ID:
329749798

assay

99-101%

form

solid

quality

meets analytical specification of Ph. Eur.

impurities

acidity or alkalinity, in accordance
 residual solvents, complies
≤0.001% heavy metals (as Pb)

loss

≤0.5% loss on drying, 130 °C

solubility

boiling water: soluble 1 gm in 4 ml
glycerol: soluble 1 gm in 75 ml
water: soluble 1 gm in 8.3 ml
alcohol: insoluble

anion traces

chloride (Cl-): ≤20 mg/kg

cation traces

As: ≤2 mg/kg
Ca: ≤50 mg/kg
Fe: ≤10 mg/kg
Mg: ≤20 mg/kg
Na: ≤100 mg/kg

suitability

in accordance for appearance of solution

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

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Categorías relacionadas

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Journal of structural biology, 122(1-2), 176-179 (1998-09-02)
The alpha-helical coiled-coil tropomyosin homodimer, alpha alphaTm, unfolds cooperatively with T1/2 = 47 degreesC, at neutral pH, 0.5 M NaCl. At pH 2, where each chain contains 55 positive charges, no cooperative unfolding occurs to at least 80 degreesC. The
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Potassium (K+) is an important nutrient ion in plant cells and plays crucial roles in many plant physiological and developmental processes. In the natural environment, K+ deficiency is a common abiotic stress that inhibits plant growth and reduces crop productivity.
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