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Merck
CN
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文件

04276

Sigma-Aldrich

磷酸钠 二元

puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, anhydrous, 98-100.5% (calc. to the dried substance)

别名:

磷酸二钠, 磷酸二钠, 磷酸氢二钠, 磷酸氢钠

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About This Item

线性分子式:
Na2HPO4
CAS号:
7558-79-4
分子量:
141.96
EC 号:
231-448-7
MDL编号:
MFCD00003496
UNSPSC代码:
12161700
eCl@ss:
38070211
PubChem化学物质编号:
329747909
NACRES:
NA.25

Agency

meets analytical specifications of BP
meets analytical specifications of Ph. Eur.
meets analytical specifications of USP

质量水平

200

等级

puriss.

检测方案

98-100.5% (calc. to the dried substance)

形式

powder

质量

meets analytical specification of Ph. Eur., BP, USP, FCC, E 339

杂质

reducing matter, complies
 residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.002% ammonium (NH4)
≤0.2% water-insoluble matter
≤1% NaH2PO4 (calc. to dried subst.)
≤2.0% pyrophosphate (as Na4P2O7)

缺失

≤1% loss on drying, 105°C, 4h
≤1% loss on drying, 130 °C

pH值（酸碱度）

8.4-9.6 (20 °C, 1%)

pKa (25 °C)

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

溶解性

H2O: soluble 8 parts
H2O: very soluble (Hot)
alcohol: insoluble

痕量阴离子

chloride (Cl-): ≤50 mg/kg
fluoride (F-): ≤10 mg/kg
sulfate (SO42-): ≤200 mg/kg

痕量阳离子

As: ≤2 mg/kg
Cd: ≤1 mg/kg
Cu: ≤10 mg/kg
Fe: ≤20 mg/kg
Hg: ≤1 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg

适用性

complies for appearance of solution

SMILES字符串

[Na+].[Na+].[H]OP([O-])([O-])=O

InChI

1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

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相关类别

应用

磷酸氢二钠已用于制备磷酸盐缓冲液，该缓冲液可用于X-gal染色。

生化/生理作用

磷酸氢二钠是变性凝胶电泳缓冲液的重要组分。 它能够诱导Sprague-Dawley大鼠的肾小球钙化以及其他肾病综合征。

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

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