Difference between revisions of "Barium oxide"
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== Description == | == Description == | ||
| − | An alkaline, white powder or mass that readily absorbs [ | + | An alkaline, white powder or mass that readily absorbs [[water]] and [[carbon dioxide]] from the air. Barium oxide is used as a dehydrating agent and as a glaze ingredient. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| Line 7: | Line 7: | ||
barium monoxide; barium protoxide; calcined baryta; heavy earth | barium monoxide; barium protoxide; calcined baryta; heavy earth | ||
| − | + | == Risks == | |
| − | == | + | * Highly toxic by ingestion. |
| + | * Contact with skin and membranes may cause irritation. | ||
| + | * Reaction with water can be violent. | ||
| + | * ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC207830250&productDescription=BARIUM+OXIDE%2C+90%25%2C+POWDE+25GR&vendorId=VN00032119&countryCode=US&language=en SDS] | ||
| − | Reacts exothermically with water to form barium hydroxide. Soluble in water, dilute acids and methanol. | + | ==Physical and Chemical Properties== |
| + | |||
| + | * Reacts exothermically with water to form barium hydroxide. | ||
| + | * Soluble in water, dilute acids and methanol. | ||
{| class="wikitable" | {| class="wikitable" | ||
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|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 1923 | + | | 1923 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 5.7 | + | | 5.7 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 34: | Line 40: | ||
|} | |} | ||
| − | == | + | ==Resources and Citations== |
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 84 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 84 | ||
Latest revision as of 08:45, 2 May 2022
Description
An alkaline, white powder or mass that readily absorbs Water and Carbon dioxide from the air. Barium oxide is used as a dehydrating agent and as a glaze ingredient.
Synonyms and Related Terms
barium monoxide; barium protoxide; calcined baryta; heavy earth
Risks
- Highly toxic by ingestion.
- Contact with skin and membranes may cause irritation.
- Reaction with water can be violent.
- ThermoFisher: SDS
Physical and Chemical Properties
- Reacts exothermically with water to form barium hydroxide.
- Soluble in water, dilute acids and methanol.
| Composition | BaO |
|---|---|
| CAS | 1304-28-5 |
| Melting Point | 1923 C |
| Density | 5.7 g/ml |
| Molecular Weight | mol. wt. = 153.33 |
| Refractive Index | 1.980 |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 84
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- 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
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- 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 1015
- CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.980