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2D Structure
Also known as: 497-19-8, Soda ash, Disodium carbonate, Carbonic acid disodium salt, Sodium carbonate, anhydrous, Calcined soda
Molecular Formula
CNa2O3
Molecular Weight
105.988  g/mol
InChI Key
CDBYLPFSWZWCQE-UHFFFAOYSA-L
FDA UNII
45P3261C7T

Sodium Carbonate is the disodium salt of carbonic acid with alkalinizing property. When dissolved in water, sodium carbonate forms carbonic acid and sodium hydroxide. As a strong base, sodium hydroxide neutralizes gastric acid thereby acting as an antacid.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
disodium;carbonate
2.1.2 InChI
InChI=1S/CH2O3.2Na/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
2.1.3 InChI Key
CDBYLPFSWZWCQE-UHFFFAOYSA-L
2.1.4 Canonical SMILES
C(=O)([O-])[O-].[Na+].[Na+]
2.2 Other Identifiers
2.2.1 UNII
45P3261C7T
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Disodium Carbonate, 14c-labeled Cpd

2. Disodium Carbonate, Heptahydrate

3. Disodium Carbonate, Monohydrate

4. Monosodium Carbonate, 14c-labeled Cpd

5. Monosodium Carbonate, Monohydrate

6. Sodium Carbonate (2:3), Dihydrate

7. Sodium Carbonate (4:5)

8. Sodium Carbonate Decahydrate

9. Sodium Carbonate, Hydrate

2.3.2 Depositor-Supplied Synonyms

1. 497-19-8

2. Soda Ash

3. Disodium Carbonate

4. Carbonic Acid Disodium Salt

5. Sodium Carbonate, Anhydrous

6. Calcined Soda

7. Solvay Soda

8. Sodium Carbonate Anhydrous

9. Carbonic Acid, Disodium Salt

10. Carbonic Acid Sodium Salt (1:2)

11. Carbonic Acid Sodium Salt

12. Soda-ash

13. Natrum Carbonicum

14. Crystol Carbonate

15. Natriumkarbonat

16. Bisodium Carbonate

17. Na2co3

18. Anhydrous Sodium Carbonate

19. Soda Ash Light

20. Na-x

21. Sodium Carbonate (anhydrous)

22. Sodium Salt Of Carbonic Acid

23. Soda

24. Sodium Carbonate (2:1)

25. Sodium Carbonate [nf]

26. Mfcd00003494

27. Sodium Carbonate (na2(co3))

28. Anhydrous Soda

29. Ins No.500(i)

30. Chebi:29377

31. Ins-500(i)

32. 45p3261c7t

33. Nsc-156204

34. E-500(i)

35. Sodium Carbonate (nf)

36. Soda (van)

37. Soda, Calcined

38. Snowlite I

39. Light Ash

40. V Soda

41. Soda Ash Light 4p

42. Suprapur 6395

43. Caswell N0 752

44. Dynamar L 13890

45. Disodium;carbonate

46. Natrium Carbonicum Siccatum

47. Natrium Carbonicum Calcinatum

48. Disodium Carbonate (na2co3)

49. Ccris 7319

50. Hsdb 5018

51. V 20n

52. Einecs 207-838-8

53. Epa Pesticide Chemical Code 073506

54. Nsc 156204

55. Sodium Carbonate, Anhydrous Astm D458

56. Sodium Carbonate, Acs

57. Sodium Cabonate

58. Sodium Carbonat

59. Carbonate Sodium

60. Sodium-carbonate

61. Soda Ash Dense

62. Unii-45p3261c7t

63. Sodium Carbonate, Anhydrous Ge Materials D4d5

64. Dried Sodium Carbonate

65. Caswell No. 752

66. Sodium Carbonate Sodium

67. Sodium Sodium Carbonate

68. Sodium Carbonate, Dried

69. Sodium Carbonate, Dense

70. Disodium Trioxidocarbonate

71. Schembl25

72. Sodium Carbonate Solution

73. Soda Ash [ii]

74. Carbonic Acid, Sodium Salt

75. Ec 207-838-8

76. Sodium Carbonate [ii]

77. Sodium Carbonate [mi]

78. Sodium Carbonate Nanoparticles

79. Sodium Carbonate [fcc]

80. Chembl186314

81. Sodium Carbonate [hsdb]

82. Sodium Carbonate [inci]

83. Dried Sodium Carbonate (jp17)

84. Dtxsid1029621

85. Natrum Carbonicum [hpus]

86. Sodium Carbonate [vandf]

87. Sodium Carbonate [mart.]

88. Anhydrous Soda,99.999%,powder

89. Sodium Carbonate, Biochemical Grade

90. Einecs 231-420-4

91. Dried Sodium Carbonate [jan]

92. Akos009158235

93. Sodium Carbonate [orange Book]

94. Db09460

95. Sodium Carbonate [ep Monograph]

96. Sodium Carbonate, Anhydrous, Acs Powder

97. Carbonate-buffered Saline (5x), Ph 9.0

98. Sodium Carbonate Anhydrous [mart.]

99. Carbonate, 0.5m Buffer Solution, Ph 9.4

100. Carbonate, 0.5m Buffer Solution, Ph 9.5

101. Carbonate, 0.5m Buffer Solution, Ph 9.6

102. Db-017706

103. Sodium Carbonate Anhydrous [usp-rs]

104. Sodium Carbonate Anhydrous [who-dd]

105. Sodium Carbonate, Anhydrous, Puratronic(r)

106. Carbonate, 0.5m Buffer Solution, Ph 10.0

107. Ft-0645109

108. S0560

109. D05283

110. Sodium Carbonate, 0.05n Standardized Solution

111. Q190227

112. Sodium Carbonate, Anhydrous [ep Impurity]

113. Sodium Carbonate 5% W/v Solution In Water (+/- 0.3%)

114. Sodium Carbonate, Anhydrous, Granular Trace Metals Grade, 99.99%

115. Soda Ash, (99% As Sodium Carbonate Or 58% As Sodium Oxide), Technical Grade, Light

116. Sodium Carbonate Concentrate, 0.1 M Na2co3 In Water, Eluent Concentrate For Ic

117. Sodium Carbonate, Acculute Standard Volumetric Solution, Final Concentration 0.1n

118. 1332-57-6

119. 7542-12-3

120. Sodium Carbonate Concentrate, Na2co3 72 Mm In Water, Ic Eluent Concentrate (20x) For Metrosep A Supp 7

2.4 Create Date
2005-07-19
3 Chemical and Physical Properties
Molecular Weight 105.988 g/mol
Molecular Formula CNa2O3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count3
Rotatable Bond Count0
Exact Mass105.96428242 g/mol
Monoisotopic Mass105.96428242 g/mol
Topological Polar Surface Area63.2 Ų
Heavy Atom Count6
Formal Charge0
Complexity18.8
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count3
4 Drug and Medication Information
4.1 Therapeutic Uses

Used topically for dermatitides, mouthwash, vaginal douche; veterinary use as emergency emetic.

National Library of Medicine's Medical Subject Headings. Sodium carbonate. Online file (MeSH, 2017). Available from, as of October 23, 2017: https://www.nlm.nih.gov/mesh/2017/mesh_browser/MBrowser.html


Occasionally, for dermatitides topically as a lotion.

Troy, D.B. (Ed); Remmington The Science and Practice of Pharmacy. 21 st Edition. Lippincott Williams & Williams, Philadelphia, PA 2005, p. 1089


Medication (Vet): Has been used as an emetic. In solution to cleanse skin, in eczema, to soften scabs of ringworm.

O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Cambridge, UK: Royal Society of Chemistry, 2013., p. 1596


Sodium bicarbonate infusion is widely recommended ... for patients who present with self-poisoning from tricyclic antidepressives. Cardiac conduction disorders could also be treated or prevented by means of such an infusion. The scientific basis for these recommendations was investigated by using Medline to search for publications about clinical studies that supported the use of sodium carbonate; 111 articles were scrutinized. Observational studies and case reports mention a rapid improvement in hypotension and cardiac arrhythmias following the administration of sodium bicarbonate. Results from animal experiments are contentious; it is not clear whether alkalinization or the administration of extra sodium causes the effect. Randomized studies in patients have not been carried out. As the toxicity of sodium bicarbonate is low, and its potential benefit appears to be high, /the authors/ recommend its use, despite the lack of scientific evidence. No recommendations concerning dosing, concentration and the length of the therapy can be provided on the basis of the literature.

PMID:11561485 Vrijlandt PJ et al; Ned Tijdschr Geneeskd 145 (35): 1686-9 (2001)


For more Therapeutic Uses (Complete) data for Sodium carbonate (8 total), please visit the HSDB record page.


4.2 Drug Indication

Used topically for dermatitides, mouthwash, vaginal douche; veterinary use as emergency emetic.Occasionally, for dermatitides topically as a lotion. Medication (Vet): In solution to cleanse skin, in eczema, to soften scabs of ringworm.


5 Pharmacology and Biochemistry
5.1 Pharmacology

Alkalizing buffering action: Sodium bicarbonate is an alkalinizing agent that dissociates to provide bicarbonate ion. Bicarbonate in excess of that needed to buffer hydrogen ions causes systemic alkalinization and, when excreted, urine alkalinization as well. Oral antacid action: Taken orally, sodium bicarbonate neutralizes stomach acid by the above mechanism.


5.2 Absorption, Distribution and Excretion

Absorption

The uptake of sodium, via exposure to sodium carbonate, is much less than the uptake of sodium via food. Therefore, sodium carbonate is not expected to be systemically available in the body. Furthermore, an oral uptake of sodium carbonate will result in a neutralization in the stomach due to the gastric acid.


Route of Elimination

Filtered and reabsorbed by the kidney; less than 1% of filtered bicarbonate is excreted.


Volume of Distribution

Distribution occurs naturally and is confined to the systemic circulation.


The major extracellular buffer in the blood and the interstitial fluid of vertebrates is the bicarbonate buffer system ... . Carbon dioxide from the tissues diffuses rapidly into red blood cells, where it is hydrated with water to form carbonic acid. This reaction is accelerated by carbonic anhydrase, an enzyme present in high concentrations in red blood cells. The carbonic acid formed dissociates into bicarbonate and hydrogen ions. Most of the bicarbonate ions diffuse into the plasma. Since the ratio of H2CO3 to dissolved CO2 is constant at equilibrium, pH may be expressed in terms of bicarbonate ion concentration and partial pressure of CO2 by means of the Henderson-Hasselbach equation: pH = pk + log [HCO3-]/aPCO2. The blood plasma of /humans/ normally has a pH of 7.40. Should the pH fall below 7.0 or rise above 7.8, irreversible damage may occur. Compensatory mechanisms for acid-base disturbances function to alter the ratio of HCO3 - to PCO2 , returning the pH of the blood to normal. ... The uptake of sodium, via exposure to sodium carbonate, is much less than the uptake of sodium via food. Therefore, sodium carbonate is not expected to be systemically available in the body. Furthermore ... an oral uptake of sodium carbonate will result in a neutralization in the stomach due to the gastric acid.

OECD; Screening Information Data Set (SIDS) Inital Assessment Report for SIDS Initial Assessment Meeting (SIAM) 15, Sodium carbonate (497-19-8) p.11 (October 2002). Available from, as of October 23, 2017: https://www.inchem.org/pages/sids.html


5.3 Metabolism/Metabolites

None.


5.4 Mechanism of Action

Carbon dioxide from the tissues diffuses rapidly into red blood cells, where it is hydrated with water to form carbonic acid. This reaction is accelerated by carbonic anhydrase, an enzyme present in high concentrations in red blood cells. The carbonic acid formed dissociates into bicarbonate and hydrogen ions. Most of the bicarbonate ions diffuse into the plasma. Since the ratio of H2CO3 to dissolved CO2 is constant at equilibrium, pH may be expressed in terms of bicarbonate ion concentration and partial pressure of CO2 by means of the Henderson-Hasselbach equation: pH = pk + log [HCO3-]/aPCO2