12636

Chlorure de potassium

puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E508, 99-100.5% (AT), ≤0.0001% Al

• Formule linéaire : KCl
• Numéro CAS: 7447-40-7
• Poids moléculaire : 74.55
• Numéro CE : 231-211-8
• Numéro MDL: MFCD00011360
• Code UNSPSC : 12352302
• ID de substance PubChem : 329749782
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: puriss.; meets analytical specification of Ph. Eur., BP, USP, FCC, E508
• Niveau de qualité: 200
• Essai: 99-100.5% (AT)
• Forme: powder or crystals
• Impuretés: acidity or alkalinity, complies; organic volatile impurities, complies (GC); residual solvents, complies; ≤0.0001% Al; ≤0.0005% heavy metals (as Pb); ≤0.003% free acid (as HCl); ≤0.005% free alkali (as KOH); ≤0.02% Mg, alkaline earth metals (as Ca)
• Perte: ≤0.5% loss on drying, 105 °C, 3 h
• pH: 7
• Pf: 770 °C (lit.)
• Densité: 1.98 g/mL at 25 °C (lit.)
• Traces d'anions: bromide (Br^-): ≤1000 mg/kg; iodide (I^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg
• Traces de cations: Al: ≤1 mg/kg; As: ≤0.5 mg/kg; Ba:, in accordance; Ca: ≤50 mg/kg; Cd: ≤1 mg/kg; Cu: ≤10 mg/kg; Fe: ≤10 mg/kg; Hg: ≤1 mg/kg; Mg: ≤50 mg/kg; Na: ≤700 mg/kg; Pb: ≤5 mg/kg; Zn: ≤20 mg/kg
• Adéquation: complies for appearance of solution
• Chaîne SMILES: [Cl-].[K+]
• InChI: 1S/ClH.K/h1H;/q;+1/p-1
• Clé InChI: WCUXLLCKKVVCTQ-UHFFFAOYSA-M

Description

Description générale

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.[1] Calorimetric estimation of the enthalpy of solution of potassium chloride in water has been described.[2]

Application

Peut être utilisé pour la préparation de solutions salines tamponnées au phosphate, et pour l′extraction et la solubilisation de protéines.

Potassium chloride may be used in the preparation of fertilizer, potassium hydroxide, potassium carbonate and other potassium slats.[1] 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.[3]
Potassium chloride can be used as a fertilizer and as a regenerant to soften water.[4] It has been used a buffer for the separation of major purine metabolites in the heart, using reverse phase ion pair chromatography(RPIPC).[5]

Informations sur la sécurité

• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable