Merck
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P0662

Sigma-Aldrich

磷酸钾二元 一元

ACS reagent, ≥99.0%

Synonym(s):
无水磷酸二氢钾, 磷酸一钾, 磷酸二氢钾
Linear Formula:
KH2PO4
CAS Number:
Molecular Weight:
136.09
EC 号:
MDL编号:
PubChem化学物质编号:
NACRES:
NA.21

等级

ACS reagent

质量水平

200

测定

≥99.0%

形式

powder

technique(s)

tissue culture: suitable

杂质

≤0.01% Insoluble matter

缺失

≤0.2% loss on drying, 105°C

pH值(酸碱度)

4.1-4.5 (25 °C, 5%)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

bp

>450 °C

mp

252.6 °C (lit.)

密度

2.338 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.003%

痕量阳离子

Fe: ≤0.002%
Na: ≤0.005%
heavy metals: ≤0.001% (by ICP)

SMILES string

[K+].OP(O)([O-])=O

InChI

1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1

InChI key

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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一般描述

磷酸二氢钾(正磷酸一钾)是水溶无机盐。它形成的标准焓是-376.1kcalmol-1它是合成偏磷酸钾的起始物质。

应用

磷酸二氢钾用于制备磷酸缓冲液和磷酸盐缓冲液(PBS)。它还可以用来制备PEG1000(聚乙二醇)/磷酸钾水二相体系(ATPS)。

包装

25, 500, 6×500 g in poly bottle
1, 2.5, 4×2.5 kg in poly bottle
12 kg in poly drum

法律信息

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(F)

Not applicable

闪点(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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