Zhè zhǒng hóngsè yánliào shì yòng yǎnghuàtiě zuò de.
This red pigment is made from iron oxide.
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氧化 + metal names the oxide: 氧化铁 iron oxide, 氧化铜 copper oxide, 氧化铝 aluminum oxide. Strictly, 氧化铁 is the red Fe₂O₃; black FeO is 氧化亚铁, with 亚 marking the lower charge.
