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重要文件

P0662

Sigma-Aldrich

磷酸钾 一元

ACS reagent, ≥99.0%

同義詞:

prim.-磷酸钾, 磷酸二氢钾

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About This Item

線性公式:
KH2PO4
CAS號碼:
分子量::
136.09
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.21

等級

ACS reagent

agency

suitable for EPA 300
suitable for SM 5210

化驗

≥99.0%

形狀

powder or crystals

技術

tissue culture: suitable

雜質

≤0.01% Insoluble matter

損耗

≤0.2% loss on drying, 105°C

pH值

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.)

負離子痕跡

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

正離子痕跡

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

SMILES 字串

[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 密鑰

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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相關類別

一般說明

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。

應用

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)。

法律資訊

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

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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