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|Product Name:||Palladium||CAS No.:||7440-05-3|
|Color:||Black Powder||Water Solubility:||INSOLUBLE|
99% Palladium Black Powder,
99% Palladium Black Powders,
99 Palladium Black Powder
Palladium CAS 7440-05-3 black powder 99% Catalyst Powder
|Density||1.025 g/mL at 25 °C|
|Boiling point||2970 °C(lit.)|
|Melting Point||1554 °C(lit.)|
|Usage||Chemical and Medical|
|5449-12-7||BMK Glycidic Acid (sodium salt)|
|28578-16-7||PMK ethyl glycidate|
Palladium, a transition element belonging to group III in the periodic table (nickel group) and light platinum metals, is a medium-hard, moderately forgeable, and ductile silverwhite metal. Soluble in aqua regia, hot nitric acid, sulfuric acid, slightly soluble in hydrochloric acid, insoluble in cold water and hot water. In its compounds, palladium usually assumes oxidation state +2 and +4, forming bivalent and tetravalent salts.
Palladium was discovered in 1803 by W.H. Wollaston during refining and purification of- platinum metal. This new metal was found in the aqua regia extract of native platinum and was detected in solution after platinum was precipitated. It was removed as ammonium chloroplatinate. Treating this solution with mercurous cyanide precipitated a yellow palladium complex salt. The precipitate was washed and ignited to form palladium metal. Wollaston named the element palladium after the newly discovered asteroid Pallas.
Palladium in nature is always associated with other platinum group metals. Its abundance in earth's crust is estimated at 0.015 mg/kg, about three times more abundant than platinum.
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