Sodium hydrogen carbonate

grade

ACS reagent

Quality Level

300

Agency

reag. Ph. Eur.

product line

EMSURE^®

Assay

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

form

powder

potency

4220 mg/kg LD₅₀ oral (Rat)

impurities

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

loss

≤0.2% loss on drying Silica gel

pH

8.6 (20 °C 50 g/L in H₂O)

pKa (25 °C)

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

mp

270 °C (decomposition)

solubility

96 g/L

density

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

bulk density

1000 kg/m³

anion traces

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%

cation traces

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%

storage temp.

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