Difference between revisions of "Soda glass"
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== Description == | == Description == | ||
| − | Common name for glass having a high [http://cameo.mfa.org/materials/fullrecord.asp?name=sodium sodium] content. Soda glass has the approximate composition 71-78% SiO2, 12-17% Na2O, 5-15% CaO, and 1-4% other. The soda is added as soda ash ([http://cameo.mfa.org/materials/fullrecord.asp?name=sodium | + | Common name for glass having a high [http://cameo.mfa.org/materials/fullrecord.asp?name=sodium sodium] content. Soda glass has the approximate composition 71-78% SiO2, 12-17% Na2O, 5-15% CaO, and 1-4% other. The soda is added as soda ash ([http://cameo.mfa.org/materials/fullrecord.asp?name=sodium%20carbonate sodium carbonate]), niter ([http://cameo.mfa.org/materials/fullrecord.asp?name=sodium%20nitrate sodium nitrate]) and/or salt cake ([http://cameo.mfa.org/materials/fullrecord.asp?name=sodium%20sulfate sodium sulfate]). The calcium is added as limestone ([http://cameo.mfa.org/materials/fullrecord.asp?name=calcium%20carbonate calcium carbonate]) or burnt lime ([http://cameo.mfa.org/materials/fullrecord.asp?name=calcium%20oxide calcium oxide]) and the silica is added as sand ([http://cameo.mfa.org/materials/fullrecord.asp?name=silicone%20dioxide silicone dioxide]). Cullet or broken glass, is used as a flux. Soda glass was also called common glass. Common glass often has a green tinge due to [http://cameo.mfa.org/materials/fullrecord.asp?name=iron iron] impurities in the ingredients. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | common glass; soda lime glass; soda-lime glass; soda-lime-silica glass; verre sodique (Fr.); vidro | + | common glass; soda lime glass; soda-lime glass; soda-lime-silica glass; verre sodique (Fr.); vidro sódico (Port.); standard window glass; Corning 0081; alkali glass |
{| class="wikitable" | {| class="wikitable" | ||
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== Authority == | == Authority == | ||
| − | * | + | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 361 |
| − | * | + | * Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, ''Technology and Conservation'', Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985 |
* ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996 | * ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996 | ||
Revision as of 07:39, 24 July 2013
Description
Common name for glass having a high sodium content. Soda glass has the approximate composition 71-78% SiO2, 12-17% Na2O, 5-15% CaO, and 1-4% other. The soda is added as soda ash (sodium carbonate), niter (sodium nitrate) and/or salt cake (sodium sulfate). The calcium is added as limestone (calcium carbonate) or burnt lime (calcium oxide) and the silica is added as sand (silicone dioxide). Cullet or broken glass, is used as a flux. Soda glass was also called common glass. Common glass often has a green tinge due to iron impurities in the ingredients.
Synonyms and Related Terms
common glass; soda lime glass; soda-lime glass; soda-lime-silica glass; verre sodique (Fr.); vidro sódico (Port.); standard window glass; Corning 0081; alkali glass
| Melting Point | 695 (softens) |
|---|---|
| Density | 2.47 |
| Refractive Index | 1.512 |
Authority
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 361
- Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
- Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976