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31248

Sigma-Aldrich

氯化钾

puriss. p.a., reag. ISO, reag. Ph. Eur., 99.5-100.5%

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About This Item

線性公式:
KCl
CAS號碼:
7447-40-7
分子量：:
74.55
EC號碼:
231-211-8
MDL號碼:
MFCD00011360
分類程式碼代碼:
12352302
PubChem物質ID:
329753698
NACRES:
NA.21
化驗:
99.5-100.5%
形狀:
crystalline powder

agency

USP/NF
reag. ISO
reag. Ph. Eur.

等級

puriss. p.a.

化驗

99.5-100.5%

形狀

crystalline powder

雜質

acidic or alkalic reac. substances, complies
≤0.0005% heavy metals (as Pb)
≤0.001% total nitrogen (N)
≤0.003% free acid (as HCl)
≤0.003% free alkali (as KOH)
≤0.005% water insolubles

損耗

≤0.2% loss on drying, 130 °C

pH值

5-8 (20 °C, 5%)

mp

770 °C (lit.)

密度

1.98 g/mL at 25 °C (lit.)

負離子痕跡

bromide (Br-): ≤100 mg/kg
iodide (I-): ≤20 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤20 mg/kg

正離子痕跡

Al: ≤1 mg/kg
Ba: ≤10 mg/kg
Ca: ≤10 mg/kg
Fe: ≤2 mg/kg
Mg: ≤5 mg/kg
Na: ≤200 mg/kg

適合性

corresponds 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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應用

可用于磷酸盐缓冲液制备，以及蛋白提取和溶解。

包裝

本品也提供玻璃瓶包装。

儲存類別代碼

11 - 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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分析證明 (COA)

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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)
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
Garrett A Kaas et al.
Neuron, 79(6), 1086-1093 (2013-09-21)
Dynamic changes in 5-methylcytosine (5mC) have been implicated in the regulation of gene expression critical for consolidation of memory. However, little is known about how these changes in 5mC are regulated in the adult brain. The enzyme methylcytosine dioxygenase TET1
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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