1.06329
Sodium hydrogen carbonate
for analysis EMSURE® ACS,Reag.Ph Eur
Synonym(s):
Sodium bicarbonate
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About This Item
grade
ACS reagent
Quality Level
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 (PO43-): ≤0.001%, phosphate, silicate (as SiO2): ≤0.005%, sulfate (SO42-): ≤0.015%, sulfur compounds (as SO42-): ≤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
Analysis Note
Identity: passes test
Assay (acidimetric; calculated on dried substance): 99.7 - 100.3 %
Assay (acidimetric): 99.0 - 101.0 %
Insoluble matter: ≤ 0.015 %
pH-value (5 %; water): ≤ 8.6
Chloride (Cl): ≤ 0.002 %
Phosphate (PO₄): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.015 %
Phosphate and Silicate (as SiO₂): ≤ 0.005 %
Sulfur compounds (as SO₄): ≤ 0.003 %
Total nitrogen (N): ≤ 0.0005 %
Ammonium (NH₄): ≤ 0.0005 %
Heavy metals (as Pb): ≤ 0.0005 %
As (Arsenic): ≤ 0.0002 %
Ca (Calcium): ≤ 0.01 %
Cu (Copper): ≤ 0.0002 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.005 %
Mg (Magnesium): ≤ 0.005 %
Pb (Lead): ≤ 0.0005 %
Iodine reducing matter (as I): ≤ 0.0065 %
Loss on drying (Silica gel): ≤ 0.20 %
Corresponds to ACS, Reag. Ph Eur
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Storage Class
13 - Non Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
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