S6014

Sodium bicarbonate

ACS reagent, ≥99.7%

• Synonym(s): Sodium hydrogen carbonate
• Linear Formula: NaHCO₃
• CAS Number: 144-55-8
• Molecular Weight: 84.01
• Beilstein/REAXYS Number: 4153970
• EC Number: 205-633-8
• MDL number: MFCD00003528
• UNSPSC Code: 12352302
• PubChem Substance ID: 329824559
• NACRES: NA.21

Properties

• grade: ACS reagent
• agency: suitable for EPA 1621; suitable for EPA 300
• assay: ≥99.7%; 99.7-100.3%
• form: powder
• impurities: ≤0.015% Insoluble matter
• pKa (25 °C): (1) 6.37, (2) 10.25 (carbonic acid)
• density: 2.16 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.003%; phosphate (PO₄^3-): ≤0.001%; sulfur compounds (as SO₄^2-): ≤0.003%
• cation traces: Ca: ≤0.02%; Fe: ≤0.001%; K: ≤0.005%; Mg: ≤0.005%; NH₄⁺: ≤5 ppm; heavy metals: ≤5 ppm (by ICP-OES)
• 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

General description

Sodium Bicarbonate, also known as baking soda, is commonly used as a mild base to neutralize acidic spills, regulate pH levels, and counteract the effects of certain acidic toxins in the body. It also acts as a leavening agent by generating CO_₂ when reacts with acidic ingredients like vinegar or lemon juice.

application

• Contactless conductivity sensor employing moist paper as absorbent for in-situ detection of generated carbon dioxide gas.: This study utilizes sodium bicarbonate in a novel approach for the development of a contactless conductivity sensor. The sensor uses moist paper to absorb CO2 gas generated from sodium bicarbonate, demonstrating its potential for environmental monitoring and analytical applications (Sonsa-Ard et al., 2020).

Sodium bicarbonate is used as a:

• mild base to neutralize the reaction mixture during the synthesis of 1,2:5,6-Di-O-cyclohexylidene-D-mannitol, and 2,3-Cyclohexylidene-D-glyceraldehyde.
• precipitating agent in the co-precipitation method in the synthesis of gamma alumina (γ-Al2O3) catalyst during the methanol dehydration reaction to produce Dimethyl ether.
• a pore-forming agent and CO2 source to enhance the substrate porosity during the formation of a porous poly(ethersulfone) support layer for designing high-performance thin-film composite forward osmosis (TFC-FO) membranes.

Other Notes

Go to Redi-Dri^™ Product Listing 792519

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Safety Information

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