发明人李文辉,林芳,韩伟. "Method for the Synthesis of [1,2-Ethanediylbis[nitrilobis(methylene)]]tetrakisphosphonic Acid Calcium Sodium Salt" [P]. 中国发明专利, 专利号 CN 114023129 B, 授权公告日 2020-01-09.
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