Which chemicals can attack platinum at high temperatures?

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rhodium — platinum group Rhodium foil and wire.

Although platinum is highly valued for its resistance to corrosion and chemical attack, it can be compromised by specific substances at high temperatures.

Platinum is rapidly attacked by fused alkali oxides and peroxides. Additionally, it reacts with the halogens fluorine and chlorine at temperatures around 500 °C (932 °F).1

Furthermore, platinum can combine with several nonmetallic elements when heated, including:
* Phosphorus
* Arsenic
* Antimony
* Silicon
* Sulfur
* Selenium1

While platinum is generally resistant to simple acids, it is famously soluble in aqua regia, a mixture of concentrated nitric and hydrochloric acids.1