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high boiling point impurity 高沸点杂质
Suffice it to say that the unusually high boiling point of acetic acid. 只要谈一下醋酸的不寻常的高沸点就行。
Suffice it to say that the unusually high boiling point of acetic acid . 只要谈一下醋酸的不寻常的高沸点就行。
It is practically immiscible with water, has a high boiling point and low vapour pressure. 它特别不溶于水，沸点更高，蒸汽压更低。
Our company main products: environmentally-friendly high boiling point solvent NME, Wood, Latex. 本公司主要产品：环保型高沸点溶剂NME、木器漆、乳胶漆。
Hower the corrosion products of the long chain fatty acids of high boiling point chain can dissolve in oil. 高沸点长链脂肪酸腐蚀产物在实际原油加工过程中也是油溶性的。
Diisopropylnaphthalene with high boiling point, low crystalline point and good solution capacity is colourless, odourless and nontoxic. 二异丙基茶具有无色、无味、无毒、沸点高、结晶点低和溶解能力强等优点,作为生产这种复写纸的新溶剂已获得广泛应用。
The result indicate that compare with the pineapple wine, mix fermented fruit wine contain more high boiling point material; the fruit aroma is stronger and lasting longer. 结果表明,与菠萝果酒相比,混酿果酒含有更多中、沸点的香气物质,产品的果香浓郁,留香持久。
Dibenzyltoluene(DBT) has high boiling point, low melting point, good heat-stability and similar physical and thermal properties to those of hydrogenated triphenyl. 二苄基甲苯沸点高,凝固点低,热稳定性好,其理化及热学性质与氢化三联苯相近。
ASE can extract the substances such as acids. terpenes, aldehyde ketones and the big polar alcohols with low boiling point as well as the high boiling point. ASE除了萃取低沸点的萜类外，还有高沸点酸类、萜类、醛酮类和大极性醇类。
Among fluorine, chlorine and bromine, bromine has the highest boiling point. 在氟、氯、溴三者中，溴的沸点最高。
A new type of methylacrylate monomer, which is used to prepare anaerobic sealant used in metal piples, is synthesized by methylacrylic acid reacted respectively with the epoxy? compound of high boiling point and TDI. 采用甲基丙烯酸与高沸点的环氧化合物形成甲基丙烯酸羟烷酯,再与甲苯二异氰酸酯反应制得一种新型的甲基丙烯酸酯单体,该单体主要用于制备金属管道用丙烯酸酯厌氧密封胶。
In the process of direct fluoration, tetraphenyl phosphonium bromide, potassium fluoride and sulfolane was used as catalyst, fluorating agent, and high boiling point agent respectively. 将对二氯苯用硝硫混酸硝化获得2,5二氯硝基苯,并以氟化钾为氟化剂,在四苯基溴化膦催化下于环丁砜等高沸点溶剂中直接进行氟化,经水蒸气蒸馏和分馏提纯获得产品。
The company main product includes: High boiling point products and so on solvent series, plasticizer series, aromatic hydrocarbon series, Zhong propyl butyl-carbinol, 2- octanone and thiophen. 公司主要产品有：高沸点溶剂系列、增塑剂系列、芳烃系列、仲辛醇、2-辛酮及噻吩等产品。
FID and a GDX -102 column was used.The method not only prevented the column from contamination by high boiling point or nonvolatile material,but also had high sensitivity and well GC separation. 该法使用FID检测器、GDX-102固定相,不仅避免高沸点、非挥发性组分对色谱柱的污染,而且准确、灵敏、色谱分离好。
Instead of the amines with a low boiling point,the amines with a higher boiling point,and of less poisonous is chosen. 采用低毒的高沸点胺代替低沸点胺,研究了有机胺种类、相比及温度等试验条件对萃取转化率的影响。
In addition, lower detection limit were obtained in the determination of residual benzene homologues with high boiling points. 该法的精密度比顶空法好,对于测定较高沸点的残留苯系物,检出限也更低。
The higher boiling point of HCFC-141b and the subsequent higher exothermic temperatures lead to another application problem. 两种发泡剂第一个主要不同之处是沸点。
high boiling point organic compounds 高沸点有机物
Since bromine has the greatest molecular size among the three halogens, thus bromine has the strongest van der Waals' forces between the molecules, and thus the highest boiling point. 由于在这三个卤素中，溴的分子最大，所以分子间的范德华引力最强，因而沸点最高。