1·Production: monomer boron, Danhuapeng, boron anhydride, without detectable; Hydrochloric acid , Yean , ammonia water.
生产： 单体硼， 氮化硼， 硼酐， 无水硼砂； 盐酸，液氨， 氨水。
2·The regioselective nitration of toluene and chlorobenzene with nitrates and supported nitrates on solid acid catalysts and supports in the presence of acetic anhydride is studied.
该文讨论了应用固体酸催化剂和载体，在醋酐存在下，采用硝酸盐和载体硝酸盐硝化甲苯和氯苯的选择性。
3·Introduced the market demand of anhydride of domestic and international benzene and price case and development trend.
介绍了国内外苯酐的市场需求和价格情况以及发展趋势。
4·Hardness and temperature, current density, chromium content of sulfuric acid anhydride and are closely related.
铬层软度与温度、电流密度、铬酐及硫酸的含量都有紧密亲密的干系。
5·In this paper, natural cotton cellulose was modified by the steam explosion, modified cellulose, acetic anhydride and fatty acids have been used to synthesize the long chain cellulose ester.
采用蒸汽闪爆技术对天然纤维素进行改性，并利用改性后的纤维素、乙酸酐和脂肪酸合成长支链纤维素酯。