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60130

Sigma-Aldrich

Potassio cloruro

puriss. p.a., ≥99.5% (AT)

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About This Item

Formula condensata:
KCl
Numero CAS:
7447-40-7
Peso molecolare:
74.55
Numero CE:
231-211-8
Numero MDL:
MFCD00011360
Codice UNSPSC:
12352302
ID PubChem:
329758757
NACRES:
NA.21
Saggio:
≥99.5% (AT)
Stato:
powder or crystals

Grado

puriss. p.a.

Livello qualitativo

200

Saggio

≥99.5% (AT)

Stato

powder or crystals

Impurezze

≤0.001% total nitrogen (N)

pH

5.5-8.0 (20 °C, 50 mg/mL in H2O)

Punto di fusione

770 °C (lit.)

Densità

1.98 g/mL at 25 °C (lit.)

Anioni in tracce

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

Cationi in tracce

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

Stringa SMILE

[Cl-].[K+]

InChI

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

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Descrizione generale

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.

Applicazioni

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.
Può essere usato per la preparazione del tampone fosfato salino e per l′estrazione e la solubilizzazione delle proteine.

Codice della classe di stoccaggio

13 - Non Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

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Certificati d'analisi (COA)

Lot/Batch Number
BCCD9720
BCCG6009
BCCG6007
BCCG7956
BCCG7955

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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
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)
Jules D P Valentin et al.
Journal of colloid and interface science, 552, 247-257 (2019-05-28)
Many materials used in the medical settings such as catheters and contact lenses as well as most biological tissues are not purely elastic, but rather viscoelastic. While substrate elasticity has been investigated for its influence on bacterial adhesion, the impact
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Dynamic changes in 5-methylcytosine (5mC) have been implicated in the regulation of gene expression critical for consolidation of memory. However, little is known about how these changes in 5mC are regulated in the adult brain. The enzyme methylcytosine dioxygenase TET1
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