Sodium Bicarbonate
Structural Formula Vector Image
Title: Sodium Bicarbonate
CAS Registry Number: 144-55-8
Additional Names: Sodium hydrogen carbonate; sodium acid carbonate; baking soda
Molecular Formula: CHNaO3
Molecular Weight: 84.01
Percent Composition: C 14.30%, H 1.20%, Na 27.37%, O 57.13%
Line Formula: NaHCO3
Literature References: The bicarbonate of commerce is about 99.8% pure. Prepd from sodium carbonate, water and carbon dioxide. Manuf: Faith, Keyes & Clark's Industrial Chemicals, F. A. Lowenheim, M. K. Moran, Eds. (Wiley-Interscience, New York, 4th ed., 1975) pp 702-705.
Properties: White cryst powder or granules. Begins to lose CO2 at about 50° and at 100° it is converted into Na2CO3. Readily dec by weak acids. In aq soln it begins to break up into carbon dioxide and sodium carbonate at about 20° and completely on boiling. Sol in 10 parts water at 25°, in 12 parts water at about 18°. Insol in alcohol. Its aq soln prepd with cold water and without agitation is only slightly alkaline to litmus or phenolphthalein; on standing or rise in temp the alkalinity increases. pH of freshly prepd 0.1 molar aq soln at 25°: 8.3.
Use: Manuf many sodium salts; source of CO2; ingredient of baking powder, effervescent salts and beverages; in fire extinguishers, cleaning compds.
Therap-Cat: Antacid; systemic alkalinizing agent.
Therap-Cat-Vet: Systemic and urinary alkalinizing agent.
Keywords: Antacid; Alkalinizing Agent.

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