碳酸氢钠

等级

ACS reagent
puriss. p.a.

Agency

reag. Ph. Eur.

方案

≥99.7%

表单

powder

杂质

≤0.003% S-compounds (as SO₄)
≤0.015% in water insoluble matters
≤5 mg/kg ammonium (NH₄)
≤50 mg/kg I red. matters (as SO₂)

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^-): ≤0.003%
phosphate (PO₄^3-): ≤10 mg/kg

痕量阳离子

As: ≤0.0002%
Ca: ≤0.01%
Cd: ≤0.0005%
Co: ≤0.005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Mg: ≤0.005%
Ni: ≤0.005%
Pb: ≤0.0005%
Zn: ≤0.0005%
heavy metals: ≤5 mg/kg (by ICP-OES)

适用性

complies for appearance of solution

SMILES字符串

[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