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Technical details about Sodium Bicarbonate, learn more about the structure, uses, toxicity, action, side effects and more

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2D Structure
1. Also known as: Sodium hydrogen carbonate, 144-55-8, Baking soda, Sodium hydrogencarbonate, Sodium acid carbonate, Carbonic acid monosodium salt
Molecular Formula
CHNaO3
Molecular Weight
84.007  g/mol
InChI Key
UIIMBOGNXHQVGW-UHFFFAOYSA-M
FDA UNII
8MDF5V39QO

A white, crystalline powder that is commonly used as a pH buffering agent, an electrolyte replenisher, systemic alkalizer and in topical cleansing solutions.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
sodium;hydrogen carbonate
2.1.2 InChI
InChI=1S/CH2O3.Na/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1
2.1.3 InChI Key
UIIMBOGNXHQVGW-UHFFFAOYSA-M
2.1.4 Canonical SMILES
C(=O)(O)[O-].[Na+]
2.2 Other Identifiers
2.2.1 UNII
8MDF5V39QO
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Baking Soda

2. Bicarbonate, Sodium

3. Carbonic Acid Monosodium Salt

4. Hydrogen Carbonate, Sodium

5. Soda, Baking

6. Sodium Hydrogen Carbonate

2.3.2 Depositor-Supplied Synonyms

1. Sodium Hydrogen Carbonate

2. 144-55-8

3. Baking Soda

4. Sodium Hydrogencarbonate

5. Sodium Acid Carbonate

6. Carbonic Acid Monosodium Salt

7. Bicarbonate Of Soda

8. Sodium Hydrocarbonate

9. Monosodium Carbonate

10. Meylon

11. Acidosan

12. Neut

13. Natriumhydrogenkarbonat

14. Nahco3

15. Natrum Bicarbonicum

16. Jusonin

17. Soludal

18. Soda Mint

19. Soda (van)

20. Carbonic Acid Sodium Salt (1:1)

21. Monosodium Hydrogen Carbonate

22. Nabic

23. Mfcd00003528

24. Sodium Hydrogencarbonat

25. Hydrocerol Esc 5671

26. Carbonic Acid, Monosodium Salt

27. Genitron Tp-bch 51051

28. Sodium Bicarbonate Anhydrous

29. 8mdf5v39qo

30. E500

31. Ins No.500(ii)

32. Chebi:32139

33. Ins-500(ii)

34. Col-evac

35. Sel De Vichy

36. E-500(ii)

37. Nsc-134031

38. Natrium Bicarbonicum

39. Natrii Hydrogencarbonas

40. E 500

41. E-500

42. Natrium Hydrogencarbonicum

43. Sodium Hydrogen-carbonate

44. Caswell No. 747

45. Sodium Carbonate (na(hco3))

46. Sodium Bicarbonate (1:1)

47. Sodium Bicarbonate In Plastic Container

48. Meylon (tn)

49. Ccris 3064

50. Hsdb 697

51. Neut (tn)

52. Sodium;hydrogen Carbonate

53. Einecs 205-633-8

54. Sodium Bicarbonate Solution

55. Unii-8mdf5v39qo

56. Epa Pesticide Chemical Code 073505

57. Nsc 134031

58. Sodium Bicarbonate [usp:jan]

59. Sodium Bicabonate

60. Sodium Bicarbonat

61. Bicarbonate Sodium

62. Sodium-bicarbonate

63. Sodiumbi-carbonate

64. Sodium Bi-carbonate

65. Sodium Bicarbonate-

66. Sodium Bi Carbonate

67. Natriumhydrogencarbonat

68. Sodium Hydrogencabonate

69. Sodium;hydron;carbonate

70. Sodiumhydrogen Carbonate

71. Natrii Hydrogenocarbonas

72. Sodium Hydrogen Cabonate

73. Hydrogen Carbonate Sodium

74. Sodium Bicarbonate, Usp

75. Sodium Hyd-rogencarbonate

76. Sodium-hydrogen-carbonate

77. Sodium Hydrogen Carboante

78. Sodium Bicarboniate

79. Ec 205-633-8

80. Chembl1353

81. B1654 [langual]

82. Sodium Bicarbonate [ii]

83. Sodium Bicarbonate [mi]

84. Dtxsid9021269

85. Sodium Bicarbonate [fcc]

86. Sodium Bicarbonate [jan]

87. Sodium Bicarbonate (jp17/usp)

88. Sodium Bicarbonate [hsdb]

89. Sodium Bicarbonate [inci]

90. Sodium Hydrogen Carbonate Solution

91. Natrum Bicarbonicum [hpus]

92. Sodium Bicarbonate [vandf]

93. Sodium Bicarbonate [mart.]

94. Amy40219

95. Sodium Bicarbonate [usp-rs]

96. Sodium Bicarbonate [who-dd]

97. Str00078

98. Sodium Bicarbonate -40-+140 Mesh

99. Sodium Bicarbonate, Biochemical Grade

100. Akos015836321

101. Akos015951222

102. Sodium Hydrogen Carbonate, Puratronic?

103. Db01390

104. Sodium Bicarbonate [orange Book]

105. Baros Component Sodium Bicarbonate

106. Sodium Bicarbonate A.c.s. Reagent Grade

107. Sodium Bicarbonate [usp Monograph]

108. Bicarbonate, 1m Buffer Solution, Ph 8.0

109. Bicarbonate, 1m Buffer Solution, Ph 8.5

110. Sodium Hydrogen Carbonate [who-ip]

111. Zegerid Component Sodium Bicarbonate

112. B7292

113. Ft-0645108

114. Normocarb Component Sodium Bicarbonate

115. S0561

116. Sodium Bicarbonate Component Of Baros

117. Halflytely Component Sodium Bicarbonate

118. Sodium Bicarbonate Component Of Zegerid

119. D01203

120. Natrii Hydrogenocarbonas [who-ip Latin]

121. 3-phenyl-2-thioxotetrahydropyrimidin-4(1h)-one

122. Sodium Bicarbonate Component Of Halflytely

123. Sodium Bicarbonate Component Of Normocarb

124. Sodium Bicarbonate, 1m Buffer Solution, Ph 8.0

125. Sodium Bicarbonate, 1m Buffer Solution, Ph 9.0

126. Sodium Hydrogen Carbonate [ep Monograph]

127. Q179731

128. Sodium Bicarbonate, 1m Buffer Solution, Ph 10.0

129. Sodium Bicarbonate, Hplc, Meets Acs Specifications

130. Sodium Bicarbonate 5% W/v Solution In Water (+/- 0.3%)

131. Saturated Aqueous Sodium Bicarbonate Solution (~9.6% Wt/wt)

2.4 Create Date
2005-03-27
3 Chemical and Physical Properties
Molecular Weight 84.007 g/mol
Molecular Formula CHNaO3
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count3
Rotatable Bond Count0
Exact Mass83.98233817 g/mol
Monoisotopic Mass83.98233817 g/mol
Topological Polar Surface Area60.4 Ų
Heavy Atom Count5
Formal Charge0
Complexity33.9
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count2
4 Drug and Medication Information
4.1 Drug Information
1 of 8  
Drug NameBss plus
Active Ingredientsodium chloride; sodium phosphate; magnesium chloride; potassium chloride; glutathione disulfide; sodium bicarbonate; dextrose; Calcium chloride
Dosage FormSolution
RouteIrrigation
Strength0.2mg/ml; 0.38mg/ml; 0.184mg/ml; 0.92mg/ml; 2.1mg/ml; 0.154mg/ml; 0.42mg/ml; 7.14mg/ml
Market StatusPrescription
CompanyAlcon

2 of 8  
Drug NameGolytely
PubMed HealthSodium Bicarbonate
Drug ClassesAntacid, Sodium Bicarbonate Containing
Active Ingredientsodium chloride; sodium bicarbonate; Polyethylene glycol 3350; sodium sulfate anhydrous; potassium chloride
Dosage FormFor solution
RouteOral
Strength5.86gm/bot; 227.1gm/packet; 6.74gm/bot; 2.82gm/packet; 22.74gm/bot; 21.5gm/packet; 2.97gm/bot; 5.53gm/packet; 6.36gm/packet; 236gm/bot
Market StatusPrescription
CompanyBraintree

3 of 8  
Drug NameNulytely
Active Ingredientsodium chloride; sodium bicarbonate; Polyethylene glycol 3350; potassium chloride
Dosage FormFor solution
RouteOral
Strength420gm/bot; 1.48gm/bot; 11.2gm/bot; 5.72gm/bot
Market StatusPrescription
CompanyBraintree

4 of 8  
Drug NameSodium bicarbonate
PubMed HealthPolyethylene Glycol 3350, Sodium and Potassium Salts (Oral route)
Drug ClassesLaxative, Hyperosmotic
Drug LabelSodium Bicarbonate Injection, USP is a sterile, nonpyrogenic, hypertonic solution of sodium bicarbonate (NaHCO3) in water for injection for administration by the intravenous route as an electrolyte replenisher and systemic alkalizer.Solutions are off...
Active IngredientSodium bicarbonate
Dosage FormInjectable
RouteInjection
Strength0.9meq/ml; 1meq/ml
Market StatusPrescription
CompanyHospira

5 of 8  
Drug NameBss plus
Active Ingredientsodium chloride; sodium phosphate; magnesium chloride; potassium chloride; glutathione disulfide; sodium bicarbonate; dextrose; Calcium chloride
Dosage FormSolution
RouteIrrigation
Strength0.2mg/ml; 0.38mg/ml; 0.184mg/ml; 0.92mg/ml; 2.1mg/ml; 0.154mg/ml; 0.42mg/ml; 7.14mg/ml
Market StatusPrescription
CompanyAlcon

6 of 8  
Drug NameGolytely
PubMed HealthSodium Bicarbonate
Drug ClassesAntacid, Sodium Bicarbonate Containing
Active Ingredientsodium chloride; sodium bicarbonate; Polyethylene glycol 3350; sodium sulfate anhydrous; potassium chloride
Dosage FormFor solution
RouteOral
Strength5.86gm/bot; 227.1gm/packet; 6.74gm/bot; 2.82gm/packet; 22.74gm/bot; 21.5gm/packet; 2.97gm/bot; 5.53gm/packet; 6.36gm/packet; 236gm/bot
Market StatusPrescription
CompanyBraintree

7 of 8  
Drug NameNulytely
Active Ingredientsodium chloride; sodium bicarbonate; Polyethylene glycol 3350; potassium chloride
Dosage FormFor solution
RouteOral
Strength420gm/bot; 1.48gm/bot; 11.2gm/bot; 5.72gm/bot
Market StatusPrescription
CompanyBraintree

8 of 8  
Drug NameSodium bicarbonate
PubMed HealthPolyethylene Glycol 3350, Sodium and Potassium Salts (Oral route)
Drug ClassesLaxative, Hyperosmotic
Drug LabelSodium Bicarbonate Injection, USP is a sterile, nonpyrogenic, hypertonic solution of sodium bicarbonate (NaHCO3) in water for injection for administration by the intravenous route as an electrolyte replenisher and systemic alkalizer.Solutions are off...
Active IngredientSodium bicarbonate
Dosage FormInjectable
RouteInjection
Strength0.9meq/ml; 1meq/ml
Market StatusPrescription
CompanyHospira

4.2 Therapeutic Uses

Sodium bicarbonate is used in the treatment of metabolic acidosis associated with many conditions including severe renal disease (e.g., renal tubular acidosis), uncontrolled diabetes (ketoacidosis), extracorporeal circulation of the blood, cardiac arrest, circulatory insufficiency caused by shock or severe dehydration, ureterosigmoidostomy, lactic acidosis, alcoholic ketoacidosis, use of carbonic anhydrase inhibitors, and ammonium chloride administration. In metabolic acidosis, the principal disturbance is a loss of proton acceptors (e.g., loss of bicarbonate during severe diarrhea) or accumulation of an acid load (e.g., ketoacidosis, lactic acidosis, renal tubular acidosis).

American Society of Health-System Pharmacists 2017; Drug Information 2017. Bethesda, MD. 2017, p. 2852


The specific role of sodium bicarbonate therapy in the treatment of diabetic ketoacidosis has not been established. Because correction of the underlying metabolic disorder generally results in correction of acid-base abnormalities and because of the potential risks of sodium bicarbonate therapy in the treatment of this disorder, administration of sodium bicarbonate is generally reserved for the treatment of severe acidosis (e.g., arterial pH less than 7-7.15 or serum bicarbonate concentration of 8 mEq/L or less). Rapid correction of acidosis with sodium bicarbonate in patients with diabetic ketoacidosis may cause hypokalemia, paradoxical acidosis in cerebrospinal fluid (CSF) since carbon dioxide diffuses more rapidly into CSF than does bicarbonate, and lactic acidosis since increased pH increases hemoglobin-oxygen affinity which, when combined with erythrocyte 2,3-diphosphoglycerate (2,3-DPG) deficiency in these patients, results in peripheral tissue hypoxia. However, the benefits and risks of sodium bicarbonate therapy in ketoacidosis have not been fully determined, and additional controlled studies of the safety and efficacy of the drug are necessary. Generally, when sodium bicarbonate is used in the treatment of diabetic ketoacidosis, the acidosis should only be partially corrected (e.g., to an arterial pH of about 7.2) to avoid rebound metabolic alkalosis as ketones are metabolized.

American Society of Health-System Pharmacists 2017; Drug Information 2017. Bethesda, MD. 2017, p. 2852


Oral sodium bicarbonate is indicated to reduce uric acid crystallization as an adjuvant to uricosuric medication in gout. /Included in US product labeling/

Thomson/Micromedex. Drug Information for the Health Care Professional. Volume 1, Greenwood Village, CO. 2006.


Parenteral sodium bicarbonate is indicated in the treatment of certain drug intoxications, including barbiturates, and in poisoning by salicylates or methyl alcohol. /Included in US product labeling/

Thomson/Micromedex. Drug Information for the Health Care Professional. Volume 1, Greenwood Village, CO. 2006.


For more Therapeutic Uses (Complete) data for Sodium bicarbonate (29 total), please visit the HSDB record page.


4.3 Drug Warning

Sodium bicarbonate is generally contraindicated in patients with metabolic or respiratory alkalosis, in patients with hypocalcemia in whom alkalosis may induce tetany, in patients with excessive chloride loss from vomiting or continuous GI suctioning, and in patients at risk of developing diuretic-induced hypochloremic alkalosis. Sodium bicarbonate should not be used orally as an antidote in the treatment of acute ingestion of strong mineral acids, since carbon dioxide gas forms during neutralization and may cause gastric distention and possible rupture.

American Society of Health-System Pharmacists 2017; Drug Information 2017. Bethesda, MD. 2017, p. 2853


Sodium bicarbonate should be used with extreme caution in patients with congestive heart failure or other edematous or sodium-retaining conditions; in patients with renal insufficiency, especially those with severe insufficiency such as oliguria or anuria; and in patients receiving corticosteroids or corticotropin, since each gram of sodium bicarbonate contains about 12 mEq of sodium. IV administration of sodium bicarbonate may cause fluid and/or solute overload resulting in dilution of serum electrolytes, overhydration, congestive conditions, or pulmonary edema. The risk of dilutional conditions is inversely proportional to the electrolyte concentration administered, and the risk of solute overload and resultant congestive conditions with peripheral and/or pulmonary edema is directly proportional to the electrolyte concentration administered.

American Society of Health-System Pharmacists 2017; Drug Information 2017. Bethesda, MD. 2017, p. 2853


Gastric distention and flatulence may occur when sodium bicarbonate is administered orally. Inadvertent extravasation of hypertonic solutions of sodium bicarbonate has reportedly caused chemical cellulitis because of their alkalinity, subsequently resulting in tissue necrosis, ulceration, and/or sloughing at the site of injection.

American Society of Health-System Pharmacists 2017; Drug Information 2017. Bethesda, MD. 2017, p. 2853


Predisposing factors /contributing to milk-alkali syndrome/ are preexisting hypertension, sarcoidosis, dehydration and electrolyte imbalance due to vomiting or aspiration of gastric contents with inadequate iv fluid replacement, and renal dysfunction caused by primary renal disease.

American Medical Association, Council on Drugs. AMA Drug Evaluations Annual 1994. Chicago, IL: American Medical Association, 1994., p. 909


For more Drug Warnings (Complete) data for Sodium bicarbonate (14 total), please visit the HSDB record page.


4.4 Drug Indication

Sodium bicarbonate is used for the treatment of metabolic acidosis which may occur in severe renal disease, uncontrolled diabetes, circulatory insufficiency due to shock or severe dehydration, extracorporeal circulation of blood, cardiac arrest and severe primary lactic acidosis. Also is indicated in severe diarrhea which is often accompanied by a significant loss of bicarbonate. Further indicated in the treatment of certain drug intoxications, including barbiturates (where dissociation of the barbiturateprotein complex is desired), in poisoning by salicylates or methyl alcohol and in hemolytic reactions requiring alkalinization of the urine to diminish nephrotoxicity of blood pigments.


5 Pharmacology and Biochemistry
5.1 Pharmacology

Intravenous sodium bicarbonate therapy increases plasma bicarbonate, buffers excess hydrogen ion concentration, raises blood pH and reverses the clinical manifestations of acidosis.


5.2 FDA Pharmacological Classification
5.2.1 Pharmacological Classes
Inhibition Large Intestine Fluid/Electrolyte Absorption [PE]; Osmotic Activity [MoA]; Osmotic Laxative [EPC]; Alkalinizing Activity [MoA]; Increased Large Intestinal Motility [PE]
5.3 ATC Code

B - Blood and blood forming organs

B05 - Blood substitutes and perfusion solutions

B05C - Irrigating solutions

B05CB - Salt solutions

B05CB04 - Sodium bicarbonate


B - Blood and blood forming organs

B05 - Blood substitutes and perfusion solutions

B05X - I.v. solution additives

B05XA - Electrolyte solutions

B05XA02 - Sodium bicarbonate


5.4 Absorption, Distribution and Excretion

Elimination: Renal; carbon dioxide formed is eliminated via lungs.

Thomson/Micromedex. Drug Information for the Health Care Professional. Volume 1, Greenwood Village, CO. 2006.


Excess sodium bicarbonate is emptied rapidly into small intestine where it is absorbed.

Miller, R. R., and D. J. Greenblatt. Handbook of Drug Therapy. New York: Elsevier North Holland, 1979., p. 1043


It is eliminated principally in the urine and effectively alkalizes it. ... /It/ is completely absorbed orally and usually is excreted within 3-4 hr.

American Medical Association, AMA Department of Drugs. AMA Drug Evaluations. 4th ed. Chicago: American Medical Association, 1980., p. 1440


Oral: Onset of action: Rapid; Duration: 8-10 minutes. I.V: Onset of action: 15 minutes; duration: 1-2 hours.

Lelkin, J.B., Paloucek, F.P., Poisoning & Toxicology Compendium. LEXI-COMP Inc. & American Pharmaceutical Association, Hudson, OH 1998., p. 1079


For more Absorption, Distribution and Excretion (Complete) data for Sodium bicarbonate (8 total), please visit the HSDB record page.


5.5 Metabolism/Metabolites

Excessive use can cause systemic alkalosis /in animals/, but body usually splits bicarbonate radical into water and carbon dioxide ...

Rossoff, I.S. Handbook of Veterinary Drugs. New York: Springer Publishing Company, 1974., p. 533


Sodium bicarbonate rapidly reacts with hydrochloric acid to form sodium chloride, carbon dioxide, and water; excess bicarbonate that does not neutralize gastric acid rapidly empties into the small intestine and is absorbed.

McEvoy, G.K. (ed.). American Hospital Formulary Service--Drug Information 94. Bethesda, MD: American Society of Hospital Pharmacists, Inc. 1994 (Plus Supplements)., p. 1870


5.6 Mechanism of Action

Sodium bicarbonate is a systemic alkalizer, which increases plasma bicarbonate, buffers excess hydrogen ion concentration, and raises blood pH, thereby reversing the clinical manifestations of acidosis. It is also a urinary alkalizer, increasing the excretion of free bicarbonate ions in the urine, thus effectively raising the urinary pH. By maintaining an alkaline urine, the actual dissolution of uric acid stones may be accomplished. Sodium bicarbonate acts as an antacid and reacts chemically to neutralize or buffer existing quantities of stomach acid but has no direct effect on its output. This action results in increased pH value of stomach contents, thus providing relief of hyperacidity symptoms. [PharmGKB]


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