Difference between pages "Sodium bicarbonate" and "Sodium carbonate"

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== Description ==
 
== Description ==
  
White, lumpy powder that is often used to make effervescent salts and beverages and as a leavening agent for baking. Sodium bicarbonate is also used in fire extinguishers and metal ([[gold|gold]] and [[platinum|platinum]]) plating baths. Sodium bicarbonate readily absorbs stains and odors, it is used in dry-cleaning preparations for textiles, carpet, plastics, and canework. It is also used as a mild abrasive in some scouring powders. Sodium bicarbonate is used in the neutralization step of alum tawing.
+
White, odorless crystals. Sodium carbonate has three distinct hydrated forms. The monohydrate is commonly called sodium carbonate while anhydrous sodium carbonate is called [[soda%20ash|soda ash]], and sodium carbonate decahydrate is called [[sal%20soda|sal soda]], or natron. Anhydrous sodium carbonate occurs in nature as the mineral thermonatrite. It forms a strongly alkaline aqueous solution and is used in the manufacture of [[leather|leather]] and [[paper|paper]]. Sodium carbonate is used as an ingredient in some types of [[glass|glass]], [[detergent|detergents]], [[bleaching%20agent|bleaches]], and [[water%20softener|water softeners]]. It is also used in photographic [[developer|developing]] baths and textiles [[dye|dye]] baths.
 
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[[[SliderGallery rightalign|aaiNACO3.jpg~FTIR|sodium carbonate.jpg~Chemical structure]]]
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
  
baking soda; sodium acid carbonate; sodium hydrogen carbonate; bicarbonate of soda
+
soda; sodium carbonate monohydrate; soda monohydrate; soda crystals; calcined soda ash
 
 
[[[SliderGallery rightalign|sodium bicarbonate.jpg~Chemical structure]]]
 
  
 
== Risks ==
 
== Risks ==
  
* Fisher Scientific: [https://beta-static.fishersci.com/content/dam/fishersci/en_US/documents/programs/education/regulatory-documents/sds/chemicals/chemicals-s/S25533.pdf SDS]
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* Noncombustible.
 +
* Toxic by ingestion and inhalation.
 +
* Corrosive.
 +
* Skin contact will cause burns.
 +
* ThermoFisher: [https://beta-static.fishersci.com/content/dam/fishersci/en_US/documents/programs/education/regulatory-documents/sds/chemicals/chemicals-s/S25539D.pdf SDS]
  
==Physical and Chemical Properties==
+
== Physical and Chemical Properties ==
  
* Soluble in water. Insoluble in ethanol.
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Soluble in water, glycerol. Insoluble in ethanol.
* For a 0.1 molar solution, the pH = 8.3.   
 
  
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
 
! scope="row"| Composition
 
! scope="row"| Composition
| NaHCO3
+
| NaCO3 - H2O
 
|-
 
|-
 
! scope="row"| CAS
 
! scope="row"| CAS
| 144-55-8
+
| 497-19-8
 
|-
 
|-
! scope="row"| Mohs Hardness
+
! scope="row"| Melting Point
| 2.5
+
| 109 C
 
|-
 
|-
 
! scope="row"| Density
 
! scope="row"| Density
| 2.159 g/ml
+
| 1.55 g/ml
 
|-
 
|-
 
! scope="row"| Molecular Weight
 
! scope="row"| Molecular Weight
| mol. wt. = 84.01
+
| mol. wt. = 105.99
 
|-
 
|-
 
! scope="row"| Refractive Index
 
! scope="row"| Refractive Index
| 1.376, 1.500, 1.582
+
| 1.415, 1.535, 1.546
 
|}
 
|}
  
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 734
 
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 734
 +
 +
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
  
 
* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986
 
* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986
  
* Palmy Weigle, ''Ancient Dyes for Modern Weavers'', Watson-Guptill Publications, New York, 1974
+
* Michael McCann, ''Artist Beware'', Watson-Guptill Publications, New York City, 1979
  
* Photographic chemicals at www.jetcity.com/~mrjones/chemdesc.htm
+
* Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982
  
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
+
* John and Margaret Cannon, ''Dye Plants and Dyeing'', Herbert Press, London, 1994
  
* Tom Rowland, Noel Riley, ''A-Z Guide to Cleaning, Conserving and Repairing Antiques'', Constable and Co., Ltd., London, 1981
+
* ''The Dictionary of Paper'', American Paper Institute, New York, Fourth Edition, 1980
  
* R.M.Organ, ''Design for Scientific Conservation of Antiquities'', Smithsonian Institution, Washington DC, 1968
+
* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
  
 
* Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997
 
* Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997
  
* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983  Comment: entry 8726
+
* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983  Comment: entry 8739
  
 
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
 
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
  
* ''CRC Handbook of Chemistry and Physics'', Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980  Comment: ref. index = 1.376, 1.500, 1.582
+
* Photographic chemicals: www.jetcity.com/~mrjones/chemdesc.htm
  
* Gordon Hanlon, contributed information, 1998
+
* ''CRC Handbook of Chemistry and Physics'', Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980  Comment: ref. index = 1.415, 1.535, 1.546
  
  
  
 
[[Category:Materials database]]
 
[[Category:Materials database]]

Latest revision as of 14:59, 1 June 2022

Description

White, odorless crystals. Sodium carbonate has three distinct hydrated forms. The monohydrate is commonly called sodium carbonate while anhydrous sodium carbonate is called Soda ash, and sodium carbonate decahydrate is called Sal soda, or natron. Anhydrous sodium carbonate occurs in nature as the mineral thermonatrite. It forms a strongly alkaline aqueous solution and is used in the manufacture of Leather and Paper. Sodium carbonate is used as an ingredient in some types of Glass, detergents, bleaches, and water softeners. It is also used in photographic developing baths and textiles Dye baths.

FTIR

AaiNACO3.jpg

Chemical structure

Sodium carbonate.jpg

Synonyms and Related Terms

soda; sodium carbonate monohydrate; soda monohydrate; soda crystals; calcined soda ash

Risks

  • Noncombustible.
  • Toxic by ingestion and inhalation.
  • Corrosive.
  • Skin contact will cause burns.
  • ThermoFisher: SDS

Physical and Chemical Properties

Soluble in water, glycerol. Insoluble in ethanol.

Composition NaCO3 - H2O
CAS 497-19-8
Melting Point 109 C
Density 1.55 g/ml
Molecular Weight mol. wt. = 105.99
Refractive Index 1.415, 1.535, 1.546

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 734
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
  • John and Margaret Cannon, Dye Plants and Dyeing, Herbert Press, London, 1994
  • The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980
  • Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8739
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
  • Photographic chemicals: www.jetcity.com/~mrjones/chemdesc.htm
  • CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index = 1.415, 1.535, 1.546