Chromium chips

铬芯片

Manganese(IV) oxide

二氧化锰

Manganese(II) selenide

硒化锰

Manganese(II) chloride, anhydrous

无水二氯化锰

三氧化二铁, Iron(III) oxide

Iron(III) perchlorate hydrate (yellow)

水合高氯酸铁

Iron(II) sulfide

硫化亚铁

Iron chips

铁

Stainless steel powder, type 304-L

铁

Cobalt(II) acetylacetonate hydrate

乙酰丙酮钴水合物