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60130

Sigma-Aldrich

Cloreto de potássio

puriss. p.a., ≥99.5% (AT)

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About This Item

Fórmula linear:
KCl
Número CAS:
7447-40-7
Peso molecular:
74.55
Número CE:
231-211-8
Número MDL:
MFCD00011360
Código UNSPSC:
12352302
ID de substância PubChem:
329758757
NACRES:
NA.21

grau

puriss. p.a.

Nível de qualidade

200

Ensaio

≥99.5% (AT)

forma

powder or crystals

Impurezas

≤0.001% total nitrogen (N)

pH

5.5-8.0 (20 °C, 50 mg/mL in H2O)

pf

770 °C (lit.)

densidade

1.98 g/mL at 25 °C (lit.)

traços de ânion

bromide (Br-): ≤700 mg/kg
iodide (I-): ≤20 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤30 mg/kg

traços de cátion

Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤2 mg/kg
Mg: ≤10 mg/kg
Mn: ≤5 mg/kg
Na: ≤200 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

cadeia de caracteres SMILES

[Cl-].[K+]

InChI

1S/ClH.K/h1H;/q;+1/p-1

chave InChI

WCUXLLCKKVVCTQ-UHFFFAOYSA-M

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Descrição geral

Potassium chloride, an alkali metal halide, is a colorless crystalline salt. Its solubility in water is directly proportional to increase in temperature. It can be prepared from potassium hydroxide, via neutralization reaction with HCl. Calorimetric estimation of the enthalpy of solution of potassium chloride in water has been described.

Aplicação

Potassium chloride may be used in the preparation of fertilizer, potassium hydroxide, potassium carbonate and other potassium salts. It may be used in the calorimetric determination of enthalpy and heat capacity values during the deprotonation (loss of proton H+) of buffers. From these values temperature dependence of the pH of these buffers was calculated.
Pode ser usado no preparo de solução salina tamponada com fosfato e na extração e solubilização de proteínas.

Código de classe de armazenamento

13 - Non Combustible Solids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Certificados de análise (COA)

Busque Certificados de análise (COA) digitando o Número do Lote do produto. Os números de lote e remessa podem ser encontrados no rótulo de um produto após a palavra “Lot” ou “Batch”.

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The use of potassium chloride and tris (hydroxymethyl) aminomethane as standard substances for solution calorimetry.
Rychly R and Pekarek V.
The Journal of Chemical Thermodynamics, 9(4), 391-396 (1977)
H Fukada et al.
Proteins, 33(2), 159-166 (1998-10-21)
Enthalpy and heat capacity changes for the deprotonation of 18 buffers were calorimetrically determined in 0.1 M potassium chloride at temperatures ranging from 5 to 45 degrees C. The values of the dissociation constant were also determined by means of
Jules D P Valentin et al.
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High-protein diets induce alterations in metabolism that may prevent diet-induced obesity. However, little is known as to whether different protein sources consumed at normal levels may affect diet-induced obesity and associated co-morbidities. We fed obesity-prone male C57BL/6J mice high-fat, high-sucrose
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