碳酸氢钠，Sodium bicarbonate；puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99.7%

等级

ACS reagent
puriss. p.a.

质量水平

200

Agency

reag. Ph. Eur.

测定

≥99.7%

形式

powder

杂质

≤0.0005% ammonium (NH₄)
≤0.003% S-compounds (as SO₄)
≤0.005% I red. matters (as SO₂)
≤0.015% in water insoluble matters

pH值（酸碱度）

≤8.6 (20 °C, 5%)

pKa (25 °C)

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

溶解性

H₂O: 0.5 g/10 mL, clear, colorless
water: soluble 50 g/L

密度

2.16 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl^-): ≤10 mg/kg
phosphate (PO₄^3-): ≤10 mg/kg

痕量阳离子

As: 2 ppm (MHS-AAS)
Ca: ≤100 ppm
Cd: ≤5 ppm
Co: ≤50 ppm
Cu: ≤5 ppm
Fe: ≤5 ppm
K: ≤50 ppm
Mg: ≤50 ppm
Ni: ≤50 ppm
Pb: ≤5 ppm
Zn: ≤5 ppm
heavy metals: ≤5 ppm (by ICP-OES)

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