Uranyl nitrate
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Description
A yellow powder with rhombic crystals. Uranyl nitrate is used as an intensifier for black and white photographs. It is also used as a yellow pigment in ceramic glazes.
Synonyms and Related Terms
uranium nitrate (incorrect); uranium oxynitrate, UNH; yellow salt
Other Properties
Soluble in water, ethanol, acetone, ether. Insoluble in benzene, toluene, chloroform.
Crystals are triboluminescent when rubbed or crushed.
May also occur as hexahydrate (mw=502.13)
| Composition | UO2(NO3)2 |
|---|---|
| CAS | 10102-06-4 (anhydrous) |
| Melting Point | 60.2 |
| Density | 2.807 |
| Molecular Weight | mol. wt. = 394.04 |
| Boiling Point | 118 |
Hazards and Safety
Toxic by ingestion, inhalation and skin absorption. Causes liver and kidney damage. Skin contact causes irritation and burns.
Strongly oxidizing. Fire and explosion risk with percussion.
EM Science: MSDS
Sources Checked for Data in Record
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 10000
- Website address 1 Comment: www.jetcity.com~mrjones/chemdesc.htm -- photographic chemicals
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Uranyl_nitrate (Accessed Jan. 15, 2006)