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Merck
CN

60218

Sigma-Aldrich

磷酸钾 一元

BioUltra, for molecular biology, anhydrous, ≥99.5% (T)

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别名:
prim.-磷酸钾, 磷酸二氢钾
线性分子式:
KH2PO4
CAS号:
分子量:
136.09
EC 号:
MDL编号:
UNSPSC代码:
12161700
PubChem化学物质编号:
NACRES:
NA.25

等级

for molecular biology

质量水平

产品线

BioUltra

检测方案

≥99.5% (T)

形式

powder or crystals

杂质

DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected
≤0.001% total nitrogen (N)

pH值(酸碱度)

4.0-4.5 (25 °C, 1 M in H2O)

pKa (25 °C)

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

mp

252.6 °C (lit.)

溶解性

H2O: 1 M at 20 °C, clear, colorless

密度

2.338 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤30 mg/kg

痕量阳离子

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

1 M in H2O

紫外吸收

λ: 260 nm Amax: 0.050
λ: 280 nm Amax: 0.045

SMILES字符串

[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 key

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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应用

磷酸二氢钾和氢氧化钾用于制备磷酸盐缓冲溶液,如生物应用中使用的磷酸钾缓冲水和盐溶液。

其他说明

PBS 组分-用于核 RNA 的分离和分析

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)


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