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1·The results indicate that ammonium ferric sulfate is possessed of good catalysis.

结果表明，硫酸铁铵具有良好的催化作用。

2·Acetates were synthesized with ammonium ferric sulfate as catalyst.

以十二水合硫酸铁铵为催化剂合成乙酸酯。

3·It shows that ammonium ferric sulfate is active.

结果表明，硫酸铁铵的催化活性良好。

4·The change of sodium ferric EDTA and carbonyl iron was not great, but most of ferric sulfate and ferric ammonium citrate became insoluble during storage.

乙二胺四乙酸铁钠和元素羰基铁粉在贮藏过程中变化不大，而硫酸亚铁和柠檬酸铁铵在贮藏过程中绝大部分变成了不溶性铁。