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Merck
CN

12636

氯化钾

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

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关于此项目

线性分子式:
KCl
化学文摘社编号:
7447-40-7
分子量:
74.55
NACRES:
NA.21
PubChem Substance ID:
329749782
UNSPSC Code:
12352302
EC Number:
231-211-8
MDL number:
MFCD00011360
Assay:
99-100.5% (AT)
Form:
powder or crystals
Solubility:
water: soluble ((355 g/l at 25 °C (77 °F))

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InChI key

WCUXLLCKKVVCTQ-UHFFFAOYSA-M

InChI

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

SMILES string

[Cl-].[K+]

grade

puriss.

assay

99-100.5% (AT)

form

powder or crystals

quality

meets analytical specification of Ph. Eur., BP, USP, FCC, E508

impurities

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)

loss

≤0.5% loss on drying, 105 °C, 3 h

pH

7

mp

770 °C (lit.)

solubility

water: soluble ((355 g/l at 25 °C (77 °F))

density

1.98 g/mL at 25 °C (lit.)

anion traces

bromide (Br-): ≤1000 mg/kg, iodide (I-): ≤50 mg/kg, sulfate (SO42-): ≤100 mg/kg

cation traces

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

suitability

complies for appearance of solution

Quality Level

200

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General description

氯化钾属碱金属卤化物，为无色结晶盐。它在水中的溶解度与温度的升高成正比。它可以从氢氧化钾，通过中和反应与盐酸。已经描述了氯化钾在水中的溶液的焓的量热估计。

Application

可用于磷酸盐缓冲液制备，以及蛋白提取和溶解。
氯化钾可用于制备肥料、氢氧化钾、碳酸钾和其他钾片。可用于缓冲液去质子化（质子 H + 损失）过程中焓和热容值的量热测定。根据这些值，计算这些缓冲液 pH 值的温度依赖性。
氯化钾可用作肥料和软化水的再生剂。使用反相离子对色谱法 (RPIPC) 分离心脏中的主要嘌呤代谢物时，可使用该缓冲液。

存储类别

13 - Non Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCN6265
BCCN2977
BCCM6532
BCCL6229
BCCM3695

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McEachern R, et al.
Water Softening with Potassium Chloride: Process, Health, and Environmental Benefits (2009)
Determination of sixteen nucleotides, nucleosides and bases using high-performance liquid chromatography and its application to the study of purine metabolism in hearts for transplantation
Smolenski,T.R, et al.
Journal of Chromatography. B, Biomedical Sciences and Applications, 527, 414-420 (1990)
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)
Masatoshi Takagaki et al.
Experimental neurology, 252, 12-17 (2013-11-20)
Sedatives in the neurointensive care unit can strongly influence patients' risks of developing secondary brain damage. In particular, isoflurane, a volatile anesthetic, has been recently re-introduced to the neurointensive care unit, and first clinical studies suggest beneficial effects due to
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