1.06329

Sodium hydrogen carbonate

for analysis EMSURE^® ACS,Reag.Ph Eur

• Synonym(s): Sodium bicarbonate
• Linear Formula: NaHCO₃
• CAS Number: 144-55-8
• Molecular Weight: 84.01
• Beilstein/REAXYS Number: 4153970
• MDL number: MFCD00003528
• UNSPSC Code: 12352302
• EC Index Number: 205-633-8
• NACRES: NA.21

Properties

• 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

Description

Analysis Note

Appearance of solution: passes test
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

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable