| Agent Name |
Palladium |
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| CAS Number |
7440-05-3 |
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| Formula |
Pd |
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| Major Category |
Metals |
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| Synonyms |
Elemental palladium; Palladium metal; |
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| Category |
Elements, Metallic |
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| Description |
Steel-white metal that does not tarnish in air; Oxidation states: 2+ and 4+; [Nordberg, p. 759] |
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| Sources/Uses |
Platinum, gold, and nickel ores contain palladium. Palladium has been used as a hydrogenation catalyst. [HSDB] One of 6 metals in the platinum group that also includes Rh, Ru, Ir, and Os; Highest use in electronic, dental, and catalytic products; Occupational exposures occur in mining and dental laboratories; Used as a catalyst in many industries; General public exposures occur from automobile catalytic converters, dental restorations, and jewelry; [Nordberg, p. 760-1] |
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| Comments |
Possible skin sensitizer; Dust can be a fire and explosive hazard; [HSDB] Occupational asthma in an assembly line worker confirmed by bronchoprovocation testing; [Malo] Occupational asthma has been reported, but its incidence is very low. Palladium II chloride is a stronger skin sensitizer than nickel sulfate. [Nordberg, p. 759, 764] |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
Not evaluated |
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| Adverse Effects |
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| Asthma |
Yes |
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| Skin Sensitizer |
Yes |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: PALLADIUM
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