并用非极性溶剂或弱极性溶剂进行重结晶。
The product was recrystallized by non-polar or low-polar solvent.
非极性溶剂；
此降凝剂能溶于非极性溶剂，不溶于极性较强的溶剂。
The pour point depressor is soluble in nonpolar solvent and insoluble in the relatively polar solvent.
能抗耐油和非极性溶剂的腐蚀，耐热性能比天然胶、丁苯胶好。
Features: able to endure the erosion of oil-resisting and non-polarity solvent heat isolation is better than the natural rubber and styrene butadiene rubber.
非极性溶剂正已烷和等体积性溶剂丙酮混合后，提取率有明显下降。
When hexane is mixed with equal volume acetone, the yield decreases sharply, which is the same as cyclo hexane mixed with dichloromethane.
结果表明，所合成树脂在极性溶剂中的溶胀性能均比在非极性溶剂中好；
The results show that the swelling properties of the synthetic resins in polar solvents are better than those in nonpolar solvents.
洗脱液以常规的顺序更换，首先用非极性溶剂，然后逐步被极性较强的所替换。
The eluent is changed in a regular manner starting with a nonpolar solvent and gradually replacing it by a more polar one.
如果您的倍增器可以清洗，则必须用非极性的溶剂。(正庚烷是非极性溶剂)。
If your multiplier can be cleaned, then non-polar solvents must be used. (Heptane is a non-polar solvent).
但用异丙醇或非极性溶剂作溶剂时，在相同的条件下，久效磷的分解率为5%左右。
However when the solvent is isopropyl alcohol or non polar solvent the decomposition value of monocrotophos is about 5% in the same condition.
溶剂对1-溴代烷烃的选择性也产生显著的影响，非极性溶剂有利于1-溴代烷烃选择性的提高；
The solution type also had significant effect on the selectivity of 1-bromo-hydrocarbon, the no polar solution was favorable for the selectivity.
对这些化合物的紫外光谱研究表明，在非极性溶剂中，在相对高浓度中，杯芳烃衍生物以聚合体形式存在。
The studies on the UV spectra showed that the calixarenes exist in agglomeration form in non polarity solution in relatively high concentration.
极性溶剂和非极性溶剂的两步提取法是迷迭香抗氧化剂和精油综合提取的有效方法，操作简单，容易实施。
Two-step extraction with polar solvents and nonpolar solvents was an effective comprehensive extraction for antioxidant and essential oil of rosemary Rosmarinus officinalis l.
极性溶剂和非极性溶剂的两步提取法是迷迭香抗氧化剂和精油综合提取的有效方法，操作简单，容易实施。
One-step extraction with polar and nonpolar mixed solvents was a method of effective comprehensive extraction for antioxidant and essential oil of rosemary(Rosmarinus officinalis L.
设计合成一系列具有不同取代基的苯甲酰萘（苯）胺衍生物，测定它们在非极性溶剂环己烷中的荧光发射光谱。
A series of prar-and meta-substituted benzanilides were synthesized and their fluorescence spectra in nonpolar solvent cyclohexane were investigated.
在极性溶剂(丙酮)或非极性溶剂(甲苯)中，用三甲基氯硅烷对全硅介孔分子筛m CM - 41进行了表面修饰。
The pure silica mesoporous molecular sieve (MCM-41) was modified on the surface by trimethylchlorosilane in polar solvent (acetone) and apolar solvent (toluene).
利用简单的工艺手段合成了多锂引发剂，并且利用异戊二烯的增溶作用很好的解决了多锂引发剂在非极性溶剂中的溶解问题。
The multilithium was prepared by simple techniques and the problem about its dissolution in the inert diluent was perfectly dissolved by the using of isoprene as the solubilizing monomer.
该制备方法具有一定的普适性，而且简单实用； 涉及的反应条件相对温和，获得的产物具有双亲性质，能均匀分散于大部分极性和非极性溶剂中。
This simple and general process is environment-friendly, and the products obtained are amphiphilic and dispersible well in most of the polar and nonpolar solvents.
而在高粘度极性溶剂中，分子内旋转损耗是主要的非辐射衰减机制。
Whereas in polar media with high viscosity, the internal rotation loss is the majorly nonradiative decay process.
用非共价法，在极性溶剂中，以丙烯酰胺作功能单体，以强极性化合物槲皮素为模板，制备了分子烙印聚合物(mip)。
A molecularly imprinted polymer (MIP) was prepared using quercetin as the template and acrylamide as the hydrogen-bonding functional monomer in a polar solvent.
非极性或低极性的溶剂适合于长碳链酯完整晶形的生长。
In the solvent with low polarity or non-polarity complete crystal of series of esters adapted to grow.
易溶于氯仿、二甲基乙酰胺等多种极性非质子有机溶剂。
It is dissolved in many kinds of dipolar aprotic organic solvents such as NMP, DMAc, DMSO, sulfolane.
本文选用聚氧乙烯醚类非离子表面活性剂，配合醇类助表面活性剂在非极性有机溶剂中形成了反胶束溶液。
In this paper, polyoxyethylene ethers nonionic surfactants were applied with cosurfactants to form reverse micelles in organic solvent.
结果表明：该离子液体能溶于常见极性有机溶剂，不溶于非极性有机溶剂。
The results show the ionic liquid is soluble in common polar organic solvents and dissoluble in common non-polar organic solvents.
极性和非极性混合溶剂一步提取法是迷迭香抗氧化剂和精油综合提取的有效方法，操作简单，容易实施。
Supercritical CO2 extraction SCDE is a kind of effective comprehensive extraction for antioxidant and essential oil of rosemary Rosmarinus officinalis l.
极性和非极性混合溶剂一步提取法是迷迭香抗氧化剂和精油综合提取的有效方法，操作简单，容易实施。
Supercritical CO2 extraction SCDE is a kind of effective comprehensive extraction for antioxidant and essential oil of rosemary Rosmarinus officinalis l.
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