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Merck

60130

氯化钾

puriss. p.a., ≥99.5% (AT)

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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:
329758757
UNSPSC Code:
12352302
EC Number:
231-211-8
MDL number:
MFCD00011360
Assay:
≥99.5% (AT)
Form:
powder or crystals
Solubility:
water: soluble ((355 g/l at 25 °C (77 °F))

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产品名称

氯化钾, puriss. p.a., ≥99.5% (AT)

InChI key

WCUXLLCKKVVCTQ-UHFFFAOYSA-M

InChI

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

SMILES string

[Cl-].[K+]

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.)

solubility

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

density

1.98 g/mL at 25 °C (lit.)

anion traces

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

Quality Level

200

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P9333P4504P3911
氯化钾 puriss. p.a., ≥99.5% (AT)

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Sigma-Aldrich

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氯化钾 ReagentPlus®, ≥99.0%

Sigma-Aldrich

P4504

氯化钾

氯化钾 ACS reagent, 99.0-100.5%

Sigma-Aldrich

P3911

氯化钾

form

powder or crystals

form

-

form

powder or crystals

form

powder

assay

≥99.5% (AT)

assay

≥99.0%

assay

≥99.0%

assay

99.0-100.5%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

grade

puriss. p.a.

grade

-

grade

-

grade

-

cation traces

Ca: ≤50 mg/kg, Co: ≤5 mg/kg, Cu: ≤5 mg/kg, Mg: ≤10 mg/kg, Na: ≤200 mg/kg, Pb: ≤5 mg/kg, Cd: ≤5 mg/kg, Fe: ≤2 mg/kg, Ni: ≤5 mg/kg, Cr: ≤5 mg/kg, Zn: ≤5 mg/kg, Mn: ≤5 mg/kg

cation traces

Al: ≤0.0005%, Ca: ≤0.005%, Cu: ≤0.0005%, Fe: ≤0.0005%, Mg: ≤0.001%, NH4+: ≤0.05%, Na: ≤0.02%, Pb: ≤0.001%, Zn: ≤0.0005%

cation traces

-

cation traces

Ba:, passes test (limit about 0.001%), Ca: ≤0.002%, Fe: ≤3 ppm, Mg: ≤0.001%, Na: ≤0.005%, heavy metals: ≤5 ppm (by ICP-OES )

anion traces

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

anion traces

sulfate (SO42-): ≤0.003%

anion traces

-

anion traces

bromide (Br-): ≤0.01%, chlorate, nitrate (as NO3-): ≤0.003%, iodide (I-): ≤0.002%, phosphate (PO43-): ≤5 ppm, sulfate (SO42-): ≤0.001%

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、碳酸钾和其他钾盐。[1]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。[2]

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。[1]已经描述了氯化钾在水中的溶液的焓的量热估计。[3]

存储类别

13 - Non Combustible Solids

wgk

WGK 1

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
BCCP1087
BCCN1544
BCCM6836
BCCM6835
BCCL6055

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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
Hanne Sørup Tastesen et al.
Amino acids, 46(7), 1659-1671 (2014-03-25)
High-protein diets induce alterations in metabolism that may prevent diet-induced obesity. However, little is known as to whether different protein sources consumed at normal levels may affect diet-induced obesity and associated co-morbidities. We fed obesity-prone male C57BL/6J mice high-fat, high-sucrose
Yuanyuan Qu et al.
Nucleic acids research, 41(10), 5263-5272 (2013-04-13)
Bacterial nucleoid-associated proteins, such as H-NS-like proteins in Enterobacteriaceae, are abundant DNA-binding proteins that function in chromosomal DNA organization and gene transcription regulation. The Mycobacterium tuberculosis Lsr2 protein has been proposed to be the first identified H-NS analogue in Gram-positive
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