1·The hydrolysis kinetics of phthalic anhydride was investigated.
对邻苯二甲酸酐水解反应动力学进行了研究。
2·Phthalic anhydride is irritant to tissue and should be handled with care.
邻苯二甲酸酐对细胞组织有刺激性，使用时要小心。
3·Phthalic anhydride residue is the by product from oxidation of naphthalene oro xylene.
苯酐渣系萘氧化或邻二甲苯氧化的副产物。
4·The kinetics of polyesterification of phthalic anhydride with diethylene glycol was investigated.
对邻苯二甲酸酐和二甘醇的聚酯化动力学进行了研究。
5·Exothermic reaction can be reduced by adding hexahydrophthalic anhydride to the phthalic anhydride.
氢 化邻苯二酸酐加入到邻苯二酸酐中，可使其放热反应减慢。
6·The present invention discloses method of reducing phthalic anhydride colour number by using active carbon.
本发明公开了一种用活性炭降低苯酐色号的方法。
7·The catalyst had high activity and high selectivity in esterification of phthalic anhydride with isoamyl alcohol.
该催化剂对邻苯二甲酸酐和异戊醇的酯化活性高，无副反应。
8·Thiourea was then used as the primary catalyst to making fumaric acid from the waste water of phthalic anhydride.
接下来，通过选用硫脲作为主催化剂，另加入少量的助催化剂，将苯酐废水中的马来酸异构化制取富马酸。
9·The flow sheet and operation in phthalic anhydride plant system after the adding partial condensator were introduced.
介绍了苯酐装置系统中增加部分冷凝器的流程，操作讨论了加部分凝冷器前后的经济效益。
10·The catalysis effect of some catalysts on the synthesis of unsaturated polyester of phthalic anhydride type was studied.
本文研究了几种催化剂对合成邻苯二甲酸酐型不饱和聚酯的催化作用。