Difference between revisions of "Boric oxide"
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== Description == | == Description == | ||
| − | A colorless crystalline compound used in metallurgy and in the manufacture of heat-resistant ([ | + | A colorless crystalline compound used in metallurgy and in the manufacture of heat-resistant ([[borosilicate%20glass|borosilicate]]) glassware. Boric oxide is obtained from [[boric acid]], [[borax]], [[sodium borate]], or [[colemanite]]. It is used in combination with silica as a flux for glazes. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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[[[SliderGallery rightalign|boric oxide.jpg~Chemical structure]]] | [[[SliderGallery rightalign|boric oxide.jpg~Chemical structure]]] | ||
| + | == Risks == | ||
| − | == | + | Noncombustible. |
| + | |||
| + | Fisher Scientific: [https://fscimage.fishersci.com/msds/03290.htm MSDS] | ||
| + | |||
| + | == Physical and Chemical Properties == | ||
Soluble in ethanol, hot water. | Soluble in ethanol, hot water. | ||
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|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 450 | + | | 450 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 2.46 | + | | 2.46 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 31: | Line 36: | ||
|- | |- | ||
! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | 1500 | + | | 1500 C |
|} | |} | ||
| − | == | + | == Resources and Citations == |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
Latest revision as of 07:28, 10 May 2022
Description
A colorless crystalline compound used in metallurgy and in the manufacture of heat-resistant (borosilicate) glassware. Boric oxide is obtained from Boric acid, Borax, Sodium borate, or Colemanite. It is used in combination with silica as a flux for glazes.
Synonyms and Related Terms
boron oxide; boric anhydride; boron trioxide; boron sesquioxide
Risks
Noncombustible.
Fisher Scientific: MSDS
Physical and Chemical Properties
Soluble in ethanol, hot water.
| Composition | B2O3 |
|---|---|
| CAS | 1303-86-2 |
| Melting Point | 450 C |
| Density | 2.46 g/ml |
| Molecular Weight | mol. wt. = 69.6 |
| Boiling Point | 1500 C |
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Henry Hodges, Artifacts: An Introduction to Early Materials and Technology, Ronald P. Frye, Kingston, Canada, 1988
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997