Is pure nickel, used as a reaction raw material, considered a **chemical?
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According to the list of highly toxic substances, nickel is classified as a highly toxic substance. However, when checking the **Chemical Catalogue (2015 edition), it does not meet any of the criteria specified there. No data is available regarding its LD50 and LC50 values. I would like to ask: is nickel considered a **chemical substance?
It must be **chemicals; they’re all highly toxic.**
As a metal, it is non-toxic. It is toxic as a chemical
I don’t understand. Could you explain it in more detail?
Nickel can burn; of course, it’s a **chemical**!
1. Pure nickel can burn； 2. Nickel with a very fine particle size is capable of adsorbing hydrogen. When nickel is mixed with aluminum and ground into powder, it is then combined with caustic soda; aluminum reacts with sodium hydroxide to produce hydrogen, which remains in the pores formed after the reaction and is adsorbed by nickel. This is the catalyst commonly used in hydrogenation processes. Thanks to its ability to burn and adsorb hydrogen, pure nickel is indeed a **chemical substance**