碳酸氢钠，Sodium hydrogen carbonate；for analysis EMSURE® ACS,Reag.Ph Eur

等级

ACS reagent

质量水平

300

Agency

reag. Ph. Eur.

产品线

EMSURE^®

测定

99.0-101.0% (acidimetric)
99.7-100.3% dry basis (acidimetric)

形式

powder

效能

4220 mg/kg LD₅₀, oral (Rat)

杂质

≤0.0065% Iodine reducing matter (as I)
≤0.015% Insoluble matter

缺失

≤0.2% loss on drying, Silica gel

pH值（酸碱度）

8.6 (20 °C, 50 g/L in H₂O)

pKa (25 °C)

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

mp

270 °C (decomposition)

溶解性

96 g/L

密度

2.22 g/cm³ at 20 °C
2.16 g/mL at 25 °C (lit.)

堆积密度

1000 kg/m³

痕量阴离子

chloride (Cl^-): ≤0.002%
phosphate (PO₄^3-): ≤0.001%
phosphate, silicate (as SiO₂): ≤0.005%
sulfate (SO₄^2-): ≤0.015%
sulfur compounds (as SO₄^2-): ≤0.003%

痕量阳离子

As: ≤0.0002%
Ca: ≤0.01%
Cu: ≤0.0002%
Fe: ≤0.0005%
K: ≤0.005%
Mg: ≤0.005%
N: ≤0.0005%
NH₄⁺: ≤0.0005%
Pb: ≤0.0005%
heavy metals (as Pb): ≤0.0005%

储存温度

2-30°C

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