60130

Potassium chloride

puriss. p.a., ≥99.5% (AT)

• Lineární vzorec: KCl
• Číslo CAS: 7447-40-7
• Molekulová hmotnost: 74.55
• EC Number: 231-211-8
• MDL number: MFCD00011360
• UNSPSC Code: 12352302
• PubChem Substance ID: 329758757
• NACRES: NA.21
• assay: ≥99.5% (AT)
• form: powder or crystals

Vlastnosti

• grade: puriss. p.a.
• assay: ≥99.5% (AT)
• form: powder or crystals
• impurities: ≤0.001% total nitrogen (N)
• pH: 5.5-8.0 (20 °C, 50 mg/mL in H₂O)
• mp: 770 °C (lit.)
• density: 1.98 g/mL at 25 °C (lit.)
• anion traces: bromide (Br^-): ≤700 mg/kg; iodide (I^-): ≤20 mg/kg; phosphate (PO₄^3-): ≤5 mg/kg; sulfate (SO₄^2-): ≤30 mg/kg
• cation traces: 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
• SMILES string: [Cl-].[K+]
• InChI: 1S/ClH.K/h1H;/q;+1/p-1
• InChI key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M

Popis

General description

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.

Application

May be used for the preparation of phosphate buffered saline, and for the extraction and solubilization of proteins.

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.

Bezpečnostní informace

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable