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Merck
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文件

60218

Sigma-Aldrich

磷酸钾 一元

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

别名:

prim.-磷酸钾, 磷酸二氢钾

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About This Item

线性分子式:
KH2PO4
CAS号:
7778-77-0
分子量:
136.09
EC號碼:
231-913-4
MDL號碼:
MFCD00011401
分類程式碼代碼:
12161700
PubChem物質ID:
57651733
NACRES:
NA.25

等級

for molecular biology

產品線

BioUltra

化驗

≥99.5% (T)

形狀

powder or crystals

雜質

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

pH值

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.)

溶解度

H2O: 1 M at 20 °C, clear, colorless

密度

2.338 g/mL at 25 °C (lit.)

負離子痕跡

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

正離子痕跡

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

&lambda ；

1 M in H2O

紫外吸收

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

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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相关类别

應用

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。

其他說明

PBS 组分-用于核 RNA 的分离和分析

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

個人防護裝備

Eyeshields, Gloves, type N95 (US)

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