Merck
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13433

Sigma-Aldrich

碳酸氢钠

puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E500, 99.0-100.5%, powder

Synonym(s):
碳酸氢钠, 小苏打
Linear Formula:
NaHCO3
CAS Number:
Molecular Weight:
84.01
Beilstein:
4153970
EC 号:
MDL编号:
eCl@ss:
38020213
PubChem化学物质编号:

等级

puriss.

质量水平

200

测定

99.0-100.5%

形式

powder

质量

meets analytical specification of Ph. Eur., BP, USP, FCC, E500

杂质

ammonia (NH3), in accordance
organic volatile impurities, complies
residual solvents, complies
water-insoluble matter, complies
≤0.002% ammonium (NH4), complies

缺失

≤0.2% loss on drying (silica gel)

pH值(酸碱度)

≤8.6 (20 °C, 5%)

pKa (25 °C)

(1) 6.37, (2) 10.25 (carbonic acid)

密度

2.16 g/mL at 25 °C (lit.)

痕量阴离子

carbonate (CO32-): in accordance
chloride (Cl-): ≤100 mg/kg
sulfate (SO42-): ≤100 mg/kg

痕量阳离子

Al: ≤0.5 mg/kg
As: ≤2 mg/kg
Ca: ≤100 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
K: ≤100 mg/kg
Pb: ≤2 mg/kg

适用性

complies for appearance of solution

SMILES string

[Na+].OC([O-])=O

InChI

1S/CH2O3.Na/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1

InChI key

UIIMBOGNXHQVGW-UHFFFAOYSA-M

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应用

碳酸氢钠可能参与基于二氧化硅的整体柱的制造,可用于毛细管电色谱。也可用于通过离子交换置换色谱法维持色谱柱的 pH 值,用于蛋白质的分离。

包装

1, 5, 4×5 kg in poly bottle

储存分类代码

13 - Non 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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