A method for the determination of residual organic solvents in trichlorosucrose by headspace gas chromatography has been developed. 建立了三氯蔗糖中有机溶剂残留量的顶空气相色谱分析方法。
The method of extracting hydrophobic components from purple salvia miltiorrhizae through using different solvents was carried out. 通过使用不同溶剂,研究了紫丹参中脂溶性成分的提取方法,并通过紫外光谱对其进行了表征。
Crystalline polymers usually are more resistant to organic solvents and have good fatigue and wear-resistant properties. 结晶质聚合物通常多能抵御有机溶剂并具有良好的抗疲劳和磨损特性。
The solubility of Natamycin is very low in water and in most organic solvents. 纳他霉素在水中和多数有机溶剂中的溶解度很低。
The results indicated that the equilibrium constants are not sensitive to both solvents and reaction temperature. 结果表明,平衡常数对溶剂和反应温度都不敏感。
The leaching solvents for the separation of silver sulfide and native silver were investigated in this test. 文中针对硫化矿物中硫化银与自然银的浸取溶剂及分离方法进行了探讨。
Immersion service in aromatic or ketone solvents and strong oxidizing acids. 不宜在芳香族和酮类溶剂以及强氧化性酸的浸泡环境中使用。
The composition of the inkjet printer ink and the selection of dyes and solvents were introduced briefly. 简述了喷墨打印机墨水的组成,染料和溶剂的选择。
This paper focuses on the applications of room temperature ionic liquids as solvents for catalysis and organic reactions. 简述了室温离子液体在氢化反应、氧化反应和酯化反应等有机反应中作为催化剂和溶剂的应用。
The role of the solvents in the reaction was also discussed. 讨论了溶剂在反应中的重要作用。
Benzene and other organic solvents are known to increase the risk. 苯和其他的有机溶剂是众所周知的风险增加。
And the stain or paint applied to the wood often contains dangerous solvents. 和染色或涂料适用于木材往往含有危险溶剂。
The fluorescence quenching of aromatic oxazole derivatives by CCl4 in different solvents was studied. 本工作对唑类化合物在不同溶剂中的荧光被四氯化碳的猝灭问题进行了研究。
The synthesis of the low molecular weight polyacrylamide was imvestigated in the mixed solvents of ethanol and acetone. 以乙醇和丙酮为混合溶剂合成了低分子量聚丙烯酰胺。
In aprotic solvents magnesium effects pinacol reductive coupling of aldehydes and ketones. 在非质子性溶剂,镁对频纳醇与醛和酮的还原耦合反应也有一定效果。
Organic solvents, complex reagents and surfactants have been used in each aspect of AAS. 涉及有机溶剂、有机络合剂及表面活性剂在原子吸收光谱分析中各个方面的应用。
The dispersant gets good effect when used in the dispersion of pigments in organic solvents. 此分散剂应用于颜料在有机溶剂中的分散取得了很好的效果。
UHMWPE Sheet is resistant to many dilute acids, solvents and cleaning agents. 超高分子量聚乙烯板,耐许多稀酸,溶剂和清洁剂。
In this reaction, alcohols are not only nucleophile but also solvents. 在该反应中,醇既是溶剂又是亲核试剂。
The hydrogenolysis of glycerol can also be achieved by adopting multiple processes, supercritical solvents or protecting groups. 此外,通过多步骤或利用超临界溶剂、保护基团等也可实现甘油氢解。
Specifications: Resistant to most chemicals and solvents. 规格:耐大多数化学品和溶剂。
Commercially available reagents containing solvents or bases other than pyridine or alcohols other than methanol may be used also. 也可以使用吡啶以外的碱性物质和甲醇以外的醇类的市售卡氏试剂。
The influence of catalysts, solvents, reaction temperature and reaction time on the product distributions was investigated emphatically. 考察了催化剂、溶剂、反应温度和反应时间对重排产物分布的影响。
The imageable elements have improved resistance to development and printing chemicals and solvents. 所述可成像元件具有改善的耐显影和印刷化学品和溶剂性。
Choice of solvents and solvents ratio on the adhesive from waste polystyrene foam plastic were studied. 研究了利用废聚苯乙烯制备胶粘剂中溶剂的选择及溶剂比例的确定。
Chemicals: for example mercury, solvents and disinfectants; 化学品:例如汞,溶剂和消毒剂;
Performance: series in the coal tar, fats, petroleum solvents and vegetable oils, turpentine completely dissolved. 性能:在煤焦油系列、脂类、石油类溶剂中及植物油,松节油中完全溶解。
Use solvent naphtha only, other solvents are not permissible! 只使用溶剂石脑油,不允许使用其他溶剂!
The photophysical properties of the dyes in different solvents and solid matrices are researched. 研究了它们在溶液和固体基质中的光物理性质。
Effect of different solvents and ultrafiltration on the extraction of sweet potato protein were investigated in this paper. 探索了不同的提取溶剂和超滤对甘薯蛋白提取的效果。