The molten hydrolytic reaction between sodium chloride and boron oxide at high temperature was studied.
研究了高温熔融状态下水蒸气与氯化钠、硼酐的水解反应。
Triisopropyl borate was synthesized with high yield from 2 propanol and boron oxide by using calcium hydride as drying agent to remove resultant water.
采用氢化钙作为脱水剂,以硼酐及异丙醇为原料合成了硼酸三异丙酯,该方法具有成本低、操作简便、条件温和、产率高的优点。
Synthesis of anhydrides from acylchlorides under microwave irradiation;
微波辐射下由酰氯合成酸酐
Exploration of the Structure of CTC Formed by Unsaturated Acid Anhydrides and Phenothiazine;
不饱和酸酐-吩噻嗪电荷转移络合物结构的探讨
The amidation and esterification of different cyclic anhydrides with aniline and phenol gave different major products,and the routes were optimized.
结果表明,环酐的分子结构直接影响反应结果,当酸酐分子存在共轭结构时以N-芳基内酰胺为主要产物。
Study of chloroacetic acid production by chlorination of acetic acid in the presence of acid anhydride catalyst;
酸酐催化乙酸氯化制一氯乙酸的研究
In this paper,the various kinds of accelerators which were used for curing epoxy resin with acid anhydride,and the accelerative mechanism in the epoxy resin curing system were introduced.
评述了几类用于酸酐固化环氧树脂的促进剂及其在酸酐/环氧体系中的固化促进机理。
It was studied that decolorizing method of brown Silkworm separated protein by acetic peracid and modification of the decolorizing product by acid anhydride and zirconium sulfate.
研究了褐变蚕蛹分离蛋白脱色方法及其酸酐、硫酸锆改性。
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。
Acetylacetone was synthesized by using boron trifluoride etherate as catalyst.
采用三氟化硼-乙醚络合物为催化剂,由丙酮和乙酸酐一步法反应合成乙酰丙酮。
Of, relating to, derived from, or containing boron.
硼的硼的、与硼有关的、来源于硼的或含硼的
sulphuric anhydride
三氧化硫, 硫(酸)酐
sulphurous anhydride [ oxide ]
二氧化硫, 亚硫酐
mixed or impregnated with borax.
与硼酸混合，或注入硼酸。
PREPARATION OF 4-HYDROXYPHTHALIC ANHYDRIDE BY AN ALKALI MELT PROCESS FROM 4-CHLOROPHTHALIC ANHYDRIDE;
4-氯代苯酐碱熔融法制备4-羟基苯酐
A salt or an ester of boric acid.
硼酸盐一种硼酸盐或硼酸酯
Borax is the compound commonly applied to the soil to correct boron deficiency.
硼砂是矫正土壤缺硼的常用硼化合物。
The effect of borax ordered in 0.2%>0.3%.
硼肥的效果是硼砂(0.2％)＞硼砂(0.3％)。
Chemical reagent-Acetic anhydride
GB/T677-1992化学试剂乙酸酐
polyvinyl methyl ethermaleic anhydride
聚乙烯甲基醚／马来酸酐
determination of hydroxyl value-acetic anhydride method
羟值的测定-乙酐法
ethoxylated sorbitan
羟乙基化山梨糖醇酐
sorbitan fatty acid ester
山梨糖醇酐脂肪酸酯
xylitan monostearate
木糖醇酐单硬脂酸酯
sorbitan monostearate
山梨醇酐单硬脂酸酯
production line and technology for manufacturing phthalic anhydride
苯酐生产技术及设备