This paper summarized the classification of chemical disinfectants and the application of common chemical disinfectants, and introduced the mechanism and research progress of chemical disinfectants according to main problems existing in the present. This information would be a useful reference to the future research and development of the environment-friendly and efficient chemical disinfectants.

Based on training outstanding engineers, this article constructed knowledge system, implementation process and evaluation method of materials chemistry taking professional comprehensive abilities and practical skills of the industry as the core and facing current situations and developments of new materials with example of “Plan for Educating and Training Outstanding Engineers” in Jinling Institute of Technology.

Electronic effect and conjugative effect are the key factors in organic reactions. The aspect of alternating polarity in the conjugative system is very obvious in the reactions such as 1,2-addition and 1,4-addition of conjugative alkadiene or α,β-unsaturated aldehyde and ketone, electrophilie substitution of benzene direvatives. Mastering the characteristics of alternating polarity in the conjugative system can get twice the result with half the effort in studying these reactions mentioned above.

In order to efficiently promote the reform and improve the quality of analytical chemistry teaching, this article deep thought on how to cultivate high quality professional talents from aspects of carefully analyzing and designing teaching contents, giving full play to classroom teaching in students' quality training according to course features of analytical chemistry and characteristics of college students.

This article introduced a comprehensive design experiment:the synthesis and properties of food additive sodium glycinate carbonate. The students explored literature, designed experimental program, synthesized sodium glycinate carbonate by wet, ultrasonic wave and microwave methods with comparison of the different synthetic methods, learned to use the IR and UV large analysis instruments to characterize the products, discussed the properties of the product, finally summarized the experimental results and made defense, which completed a simple practice of scientific research process.

By using the comprehensive experiment methods of quantum chemistry and experimental chemistry, we studied the redox properties of p-hydroquinone and its derivates, and calculated their redox potentials. The experimental results were consistent with the theoretical ones. Therefore, putting computers and large precise instruments into the teaching of structural chemistry, designing and developing comprehensive experiment, and revealing learning level of structure-property-application, will contribute to enhance students' learning interest on theoretical knowledge, exercise students' ability to find problem and solve problem, and cultivate students' scientific thought and scientific literacy.

This paper discussed the necessity and significance of safety education of college chemistry laboratory, introduced the distribution of teaching time, teaching contents, teaching mode and the evaluation methods, pointed out the problems and the insufficiency existing in the chemical laboratory safety education. Practice showed that safety education of college chemistry laboratory could make students master the necessary safety knowledge and skills, improve the security capability of the accident, enhance the safety consciousness and responsibility.

This article studied the sensitizing effects of surfactants in the experiment of spectrophotometric determination of trace iron, described the results of different surfactants combined with the analysis of visible absorption spectroscopy, kinetic research, acid and alkali environment adaptability. The research showed that sensitizing effects of the cationics was obvious, mixed use of trimethyl ammonium bromide and fourteen alkyl pyridine bromide had the best sensitizing effects. The absorbance could be increased nearly 84%, the molar absorption coefficient ε was 4.4×10⁴, and the linear relationship was quite good while the concentration range of iron was 0.1～1.5 μg/mL, which conformed the Lambert Beer's law and was suitable to measure trace iron in the water.

According to the characteristics of elite-class students, this article proposed a series of measures in the teaching of elemental chemistry experiment, including guiding students to realize the importance of elemental chemistry experiment, strengthening preview, consciously guiding students to pay attention to the effect of reaction conditions on chemical experiment phenomena and products, encouraging students to do inquiry experiments, summarizing experimental results in time, which stimulated elite-class students' learning interests, and cultivated their innovative ability and scientific literacy.

This paper analyzed teaching contents and teaching methods of analytical chemistry experiment and put forward some improvement measures. Then, the application of flipped classroom teaching mode in analytical chemistry experiment was introduced with example of “determination of the contents of aluminium hydroxide and magnesium oxide in different brand gastropin tablets” from four stages such as teachers preparing learning resources before class, students' autonomous learning, classroom activities and communication and evaluation after school. The results showed that flipped classroom could greatly stimulate students' learning and exploring enthusiasm.

Using a semipermeable membrane instead of salt bridge, this paper designed a galvanic cell for Cu²⁺ and I^- with characteristics of simple apparatus, convenient operation, obvious phenomena, high success rate and good effect.

Using the self-made questionnaire of pre-service chemistry teacher,this paper investigated the development of TPACK of 902 students majoring in chemistry. Results showed that there were significant gender differences in the TPACK of pre-service chemistry teachers, boys higher than girls in TK,PCK,TPK,TCK,TPCK, and girls higher than boys in CK and PK;second,there were significant differences in pre-service chemistry teachers from city and rural in TK and CK, the score of the rural higher than the cities in CK,PK,PCK,TCK,TPK and TPCK;third,there were significant grade differences, with the increase of grade, TPACK presents the wave sustainable development trend.

According to the higher vocational students' weak theoretical foundation and not high learning enthusiasm of classroom knowledge, this article set series of comprehensive experiment such as confirmatory experiments of acid-base titration jump curve (pH-V Curve), comparative experiments of titration end-point and stoichiometric point, comparative experiments of acidity determination of aqueous solution by different methods, etc. With the teaching mode of experiment integrating theory, core contents of acid base titration and potentiometric analysis were combined, new knowledge and prior knowledge were joined by applying comparative teaching methods with different analytical methods in the same system. Students improved their theoretical knowledge based on skillful operation analytical technology and the theory verification by experiments.

This article studied teaching methods and teaching philosophy of principles of chemical engineering with less class hours. Results showed that giving a good introduction lesson, paying attention to the work before and after class, improving teaching skills, carefully designing teaching contents, using analogical thinking and heuristic teaching method, emphasizing engineering technology and economic thinking, cleverly setting homework and maintaining a high degree of affinity could get better, more substantial teaching effects in a short time.

According to the problems in traditional experiment teaching, this article analyzed the teaching reform from experimental orientation, teaching mode, organization mode and evaluation with example of preparation of ethyl acetate, discussed the necessity and ways to carry out the designed experiments.

Freshmen major in chemical engineering in local universities have not only an unclear cognition of their specialty and development orientation but also a misunderstanding of their career as well as perplexity in learning method. According to the situation, this article expounded the necessity and significance of introductory course for chemical engineering majors and put forward proposals to enhance the effectiveness of introductory course from three aspects including teaching contents, teaching methods and teaching evaluation,which had strong pertinence and practical guidance for college freshmen's professional education.

This article analyzed the problems in experiment teaching of medicinal chemistry from five aspects: the relationship between experiment courses and theoretical courses, the contents of experiment teaching, the connection with elementary courses, the communication between medicinal chemistry and other related courses, and the laboratory management, proposed some measures to solve these problems,and discussed the development direction of experiment teaching reform.

This paper simply analyzed the advantages and disadvantages of new teachers in teaching specialized english for graduate students in chemistry and the existing problems of this course's teaching. The new method was designed by following the three steps: laying foundation, improving skills and practicing training. A few original programs were introduced in the last step in order to arouse student interest and enhance teaching efficiency.

This paper discussed the application of Aspen Plus software in distillation separation teaching by the utilization of Aspen Plus chemical process simulation software and combination with the case of distillation separation of DMEMethanolWater ternary system. The practice indicated that the teaching methodology with the assisted process simulation software not only made students get a better understanding of theoretical knowledge, which improved the teaching quality, but also cultivated the students' ability of solving practical engineering problems by using the simulation technology, which enhanced students' comprehensive qualities.

The selectivity and yield of organic synthesis are usually influenced by many factors including reaction mechanism, temperature, steric effect, side reactions, etc. Due to the lack of data and methods, it is difficult to predict the influential factors for the organic synthesis. The optimization of synthetic route usually can only be experimentally performed, which is very much complicated and timeconsuming. In this paper, a theoretical discussion based on the effect of temperature and solvent on the reaction rate was made by analyzing the reaction mechanism and estimating activation energy of the elementary reactions. It was found that by approximate estimating activation energy from the dissociation energy of chemical bonds and analyzing the change of rate on temperature, useful information could be obtained to guide the optimization of the synthesis route.