iron sulfate; ferrous sulfate; ferric sulfate
Chemical term covering both ferrous sulfate (硫酸鉄(II)) and ferric sulfate (硫酸鉄(III)). In general contexts, often refers to ferrous sulfate.
Iron sulfate is used in water treatment and pigment production.
Compound of 硫酸 (sulfuric acid) and 鉄 (iron), following standard chemical naming conventions.