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high grade piperazine derivatives:N,N'-bis(2-hydroxyethyl) piperzaine (CAS No.122-96-3)of 99%(w/w) min. and hydroxyethyl piperazine (liquid form) pale yellow crystalline powder which could be used as acid gas absorbent for industral use.piperazine anhydrous (CAS No.110-85-0) of 99.5% min.white flake used for phosphate-piperazine fluphenazine and Rifamycine equality etc. [详细介绍]
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