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Merck

12636

Sigma-Aldrich

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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About This Item

线性分子式:
KCl
CAS号:
分子量:
74.55
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.21

等級

puriss.

化驗

99-100.5% (AT)

形狀

powder or crystals

品質

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

雜質

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)

損耗

≤0.5% loss on drying, 105 °C, 3 h

pH值

7

mp

770 °C (lit.)

密度

1.98 g/mL at 25 °C (lit.)

負離子痕跡

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

正離子痕跡

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

適合性

complies for appearance of solution

SMILES 字串

[Cl-].[K+]

InChI

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

InChI 密鑰

WCUXLLCKKVVCTQ-UHFFFAOYSA-M

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一般說明

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。

應用

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。
可用于磷酸盐缓冲液制备,以及蛋白提取和溶解。

儲存類別代碼

13 - Non Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable


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McEachern R, et al.
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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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