Difference between revisions of "Lead tungstate"
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== Description == | == Description == | ||
| − | A yellowish-white powder that occurs naturally as the transparent crystalline minerals raspite and stolzite. Lead tungstate | + | A yellowish-white powder that occurs naturally as the transparent crystalline minerals raspite and stolzite. Lead tungstate has weak reducing and oxidizing powers. It has been used as an industrial paint pigment. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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lead wolframate; tungstato de plomo (Esp.); tungstate de plomb (Fr.); tungstato de chumbo (Port.) | lead wolframate; tungstato de plomo (Esp.); tungstate de plomb (Fr.); tungstato de chumbo (Port.) | ||
| − | == | + | == Risks == |
| + | |||
| + | * Toxic by inhalation or ingestion. | ||
| + | * Skin contact may cause irritation or ulcers. | ||
| + | * Carcinogen, teratogen, suspected mutagen. | ||
| + | * NIH: [https://pubchem.ncbi.nlm.nih.gov/compound/Lead-tungstate Compound summary] | ||
| + | |||
| + | ==Physical and Chemical Properties== | ||
Soluble in sodium hydroxide. Insoluble in water. | Soluble in sodium hydroxide. Insoluble in water. | ||
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|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 1130 | + | | 1130 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 8.235 | + | | 8.235 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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|} | |} | ||
| − | == | + | ==Resources and Citations== |
| − | |||
| − | |||
| − | |||
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 444 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 444 | ||
Latest revision as of 10:35, 7 October 2022
Description
A yellowish-white powder that occurs naturally as the transparent crystalline minerals raspite and stolzite. Lead tungstate has weak reducing and oxidizing powers. It has been used as an industrial paint pigment.
Synonyms and Related Terms
lead wolframate; tungstato de plomo (Esp.); tungstate de plomb (Fr.); tungstato de chumbo (Port.)
Risks
- Toxic by inhalation or ingestion.
- Skin contact may cause irritation or ulcers.
- Carcinogen, teratogen, suspected mutagen.
- NIH: Compound summary
Physical and Chemical Properties
Soluble in sodium hydroxide. Insoluble in water.
| Composition | PbWO4 |
|---|---|
| CAS | 7759-01-5 |
| Melting Point | 1130 C |
| Density | 8.235 g/ml |
| Molecular Weight | mol. wt. = 455.07 |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 444
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 5269