Home

Citation: Chengshan Yuan, Xiaolong Li, Xiuping Yang, Xiangfeng Shao, Zitong Liu, Xiaolei Wang, Yongwen Shen. Standardized Operational Guidelines for Mixed-Solvent Recrystallization in Organic Chemistry Experiment[J]. University Chemistry, ;2025, 40(5): 122-127. doi: 10.12461/PKU.DXHX202504073 shu

Standardized Operational Guidelines for Mixed-Solvent Recrystallization in Organic Chemistry Experiment

College of Chemistry and Chemical Engineering, National Demonstration Center for Experimental Chemistry (Lanzhou University), State Key Laboratory of Applied Chemistry, Lanzhou University, Lanzhou 730000, China

Corresponding author: Chengshan Yuan, yuancs@lzu.edu.cn
Received Date: 28 April 2025
Revised Date: 8 May 2025

Mixed-solvent recrystallization is a commonly used and highly selective purification method. However, systematic operational guidelines are still lacking in current teaching, and students often encounter issues such as inappropriate solvent selection or improper techniques, resulting in failed crystallization or low purity. This paper outlines the basic principles and procedures of mixed-solvent recrystallization, clarifies key steps including solvent selection, decolorization, hot filtration, and crystallization induction, and proposes practical guidelines. These recommendations are feasible and widely applicable, offering a reference for standardizing laboratory instruction.
- Organic chemistry experiment,
- Recrystallization,
- Mixed solvent,
- Standardized operational guideline
1. [1]
2. [2]
3. [3]
1. [1]
  Xuewei Qian , Xingwen Sun , Houjin Li , Zhanxiang Liu , Yuan Zheng , Lin Wu , Shuanglian Cai , Ying Xiong , Guangao Yu , Qingwen Liu , Jie Han , Xin Du , Chengshan Yuan , Qihan Zhang , Shuyong Zhang , Jianrong Zhang . Basic Operations and Specification Suggestions for Organic Chemical Recrystallization Experiments. University Chemistry, 2025, 40(5): 66-75. doi: 10.12461/PKU.DXHX202503126
2. [2]
  Zhanxiang Liu , Chengshan Yuan , Jie Han , Shuanglian Cai , Qihan Zhang , Lin Wu , Yuan Zheng , Xingwen Sun , Qingwen Liu , Ying Xiong , Guangao Yu , Xin Du , Houjin Li , Jianrong Zhang , Shuyong Zhang . Recommendations for Basic Operations and Standards for Organic Chemical Extraction and Washing Experiments. University Chemistry, 2025, 40(5): 55-65. doi: 10.12461/PKU.DXHX202410039
3. [3]
  Houjin Li , Lin Wu , Xingwen Sun , Yuan Zheng , Zhanxiang Liu , Shuanglian Cai , Ying Xiong , Guangao Yu , Qingwen Liu , Jie Han , Xin Du , Chengshan Yuan , Qihan Zhang , Jianrong Zhang , Shuyong Zhang . Basic Operations and Specification Suggestions for Organic Chemical Chromatography Experiments. University Chemistry, 2025, 40(5): 93-105. doi: 10.12461/PKU.DXHX202408100
4. [4]
  Houjin Li , Shuanglian Cai , Yuan Zheng , Zhanxiang Liu , Chengshan Yuan , Lin Wu , Guangao Yu , Jie Han , Qingwen Liu , Xin Du , Ying Xiong , Qihan Zhang , Xingwen Sun , Jianrong Zhang , Shuyong Zhang . Basic Operations and Standardization Suggestions for Organic Chemistry Distillation Experiments. University Chemistry, 2025, 40(5): 40-54. doi: 10.12461/PKU.DXHX202411053
5. [5]
  Chengshan Yuan , Zhanxiang Liu , Xin Du , Jie Han , Yuan Zheng , Ying Xiong , Qingwen Liu , Guangao Yu , Lin Wu , Shuanglian Cai , Xingwen Sun , Qihan Zhang , Houjin Li , Jianrong Zhang , Shuyong Zhang . Standardized Operational Guidelines for Sublimation in Organic Chemistry Experiments. University Chemistry, 2025, 40(5): 76-83. doi: 10.12461/PKU.DXHX202504015
6. [6]
  Yuan Zheng , Houjin Li , Zhanxiang Liu , Lin Wu , Shuanglian Cai , Ying Xiong , Guangao Yu , Xingwen Sun , Qingwen Liu , Jie Han , Xin Du , Chengshan Yuan , Qihan Zhang , Jianrong Zhang , Shuyong Zhang . Basic Operations and Standardization Suggestions for Organic Chemistry Reflux Experiments. University Chemistry, 2025, 40(5): 84-92. doi: 10.12461/PKU.DXHX202411045
7. [7]
  Houjin Li , Zhanxiang Liu , Yuan Zheng , Shuanglian Cai , Jie Han , Ying Xiong , Xingwen Sun , Chengshan Yuan , Guangao Yu , Qingwen Liu , Lin Wu , Qihan Zhang , Xin Du , Jianrong Zhang , Shuyong Zhang . Exploration and Practice of the Construction of the Basic Operation Standard of Organic Chemistry Experiment Based in Virtual Teaching Research. University Chemistry, 2025, 40(5): 230-237. doi: 10.12461/PKU.DXHX202502064
8. [8]
  Ying Xiong , Guangao Yu , Lin Wu , Qingwen Liu , Houjin Li , Shuanglian Cai , Zhanxiang Liu , Xingwen Sun , Yuan Zheng , Jie Han , Xin Du , Chengshan Yuan , Qihan Zhang , Jianrong Zhang , Shuyong Zhang . Basic Operations and Specification Suggestions for Determination of Physical Constants of Organic Compounds. University Chemistry, 2025, 40(5): 106-121. doi: 10.12461/PKU.DXHX202503079
9. [9]
  Wanchun Zhu , Yongmei Liu , Li Wang , Yunshan Bai , Shu'e Song , Xiaokui Wang , Zhongyun Wu , Hong Yuan , Yunchao Li , Fuping Tian , Yuan Chun , Jianrong Zhang , Shuyong Zhang . Suggestions on Operating Specifications of Physical Chemistry Experiment: Measurement and Control of Temperature. University Chemistry, 2025, 40(5): 128-136. doi: 10.12461/PKU.DXHX202503028
10. [10]
  Zhongyun Wu , Li Wang , Xiaokui Wang , Wanchun Zhu , Yuan Chun , Fuping Tian , Yongmei Liu , Yunshan Bai , Hong Yuan , Yufeng Li , Shu'e Song , Jianrong Zhang , Shuyong Zhang . Suggestions on Operating Specifications of Physical Chemistry Experiment: Measurement and Control of Pressure. University Chemistry, 2025, 40(5): 137-147. doi: 10.12461/PKU.DXHX202503027
11. [11]
  Shu'e Song , Xiaokui Wang , Yongmei Liu , Wanchun Zhu , Hong Yuan , Fuping Tian , Yunshan Bai , Yunchao Li , Li Wang , Zhongyun Wu , Yuan Chun , Jianrong Zhang , Shuyong Zhang . Suggestions on Operating Specifications of Physical Chemistry Experiment: Measurement of Viscosity, Density and Optical Properties. University Chemistry, 2025, 40(5): 148-156. doi: 10.12461/PKU.DXHX202503026
12. [12]
  Fuping Tian , Yunshan Bai , Wanchun Zhu , Yufeng Li , Yongmei Liu , Shu'e Song , Hong Yuan , Zhongyun Wu , Li Wang , Xiaokui Wang , Yuan Chun , Jianrong Zhang , Shuyong Zhang . Suggestions on Operating Specifications of Physical Chemistry Experiment: Measurement of Thermal Properties. University Chemistry, 2025, 40(5): 157-164. doi: 10.12461/PKU.DXHX202503054
13. [13]
  Yunchao Li , Hong Yuan , Yuan Chun , Xiaokui Wang , Fuping Tian , Yunshan Bai , Yongmei Liu , Wanchun Zhu , Shu'e Song , Zhongyun Wu , Li Wang , Yufeng Li , Jianrong Zhang , Shuyong Zhang . Suggestions on Operating Specifications of Physical Chemistry Experiment: Measurement of Electrical Properties. University Chemistry, 2025, 40(5): 165-177. doi: 10.12461/PKU.DXHX202503055
14. [14]
  Yuan Chun , Yongmei Liu , Fuping Tian , Hong Yuan , Shu'e Song , Wanchun Zhu , Yunchao Li , Zhongyun Wu , Xiaokui Wang , Yunshan Bai , Li Wang , Jianrong Zhang , Shuyong Zhang . Suggestions on Operating Specifications of Physical Chemistry Experiment: Measurement of Colloidal and Surface Chemical Properties, Molecular Structure and Properties. University Chemistry, 2025, 40(5): 178-188. doi: 10.12461/PKU.DXHX202503053
15. [15]
  Houjin Li , Wenjian Lan . Name Reactions in University Organic Chemistry Laboratory. University Chemistry, 2024, 39(4): 268-279. doi: 10.3866/PKU.DXHX202310016
16. [16]
  Yi-Lin Xie , Jian-Ji Zhong , Qing-Xiao Tong , Jing-Xin Jian . Exploring “Magic Teaching” as a Means to Integrate Organic Chemistry Experiments with the “Industry-University-Research” Model. University Chemistry, 2025, 40(5): 252-260. doi: 10.12461/PKU.DXHX202407024
17. [17]
  Mengchen Liao , Hua Yang , Younian Liu , Zhen He , Maolin Zhang , Qing Liu , Jiwen Ding . Exploration and Implementation of Refined Management Practices in Basic Organic Chemistry Laboratories. University Chemistry, 2024, 39(10): 164-173. doi: 10.3866/PKU.DXHX202403041
18. [18]
  Gang Liu , Heng Zhang , Ying Ma , Shiling Yuan , Qisheng Song , Zhenghu Xu , Jichao Sun . Exploration and Practice on Improving the Teaching Quality of Organic Chemistry Laboratory Course. University Chemistry, 2024, 39(4): 70-74. doi: 10.3866/PKU.DXHX202309079
19. [19]
  Faqiong Zhao , Xiaohang Qiu , Yanping Ren , Juanjuan Song , Dongcheng Liu , Xiuqiong Zeng , Wenwei Zhang , Mei Shi , Min Hu , Wan Li , Yongxian Fan , Yiru Wang , Xiuyun Wang , Weihong Li , Yong Fan , Jianrong Zhang , Shuyong Zhang . The Use of pH Indicator Papers and pH Meters. University Chemistry, 2025, 40(5): 32-39. doi: 10.12461/PKU.DXHX202503099
20. [20]
  Huicheng Yang , Qianhong Sun . Practice of Ideological and Political Education in Organic Chemistry Laboratory Courses under the OBE Framework: A Case Study of Berberine Extraction. University Chemistry, 2025, 40(5): 276-282. doi: 10.12461/PKU.DXHX202410091

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(7)
HTML views(1)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return