用磷酸做催化剂，催化工业双戊烯与顺丁烯二酸酐进行异构加成反应。
In the presence of catalyst phosphoric acid, isomeric addition of bipentene with cis-butenedioic anhydride can form terpenyl bu tenedioic anhydride compound as expoxylite firming agent.
五氧化二磷是正磷酸(H3PO4)的酸酐。
Phosphorous acid is the acid anhydride of orthophosphoric acid (h 3 PO 4).
五氧化二磷是正磷酸(H3PO4)的酸酐。
Phosphorous acid is the acid anhydride of orthophosphoric acid (h 3 PO 4).
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