University Chemistry ›› 2017, Vol. 32 ›› Issue (12): 74-78.doi: 10.3866/PKU.DXHX201707013

• Chemistry Laboratory • Previous Articles     Next Articles

Study on the Improvement of a College Comprehensive Chemical Experiment: Preparation of Hexamine Cobalt(Ⅲ) Chloride

Kang WANG,Jia-Bao ZHANG,Yong-Wang MA,Tong-Tong SHE,Hua TIAN*(),Xiao-Xia HAN*()   

  • Published:2017-12-19
  • Contact: Hua TIAN,Xiao-Xia HAN;
  • Supported by:


The experiment of hexamine cobalt(Ⅲ) chloride preparation is a comprehensive inorganic chemistry experiment, several kinds of harmful volatile reagents are used, such as concentrated hydrochloric acid, ammonia, hydrogen peroxide solution. So we explore the reaction condition to improve synthesis method. The concentration of hydrochloric acid has been decreased, the efficient value of which ranges from 3.0 mol·L-1 to 6.0 mol·L-1. The improvements of preparing[Co(NH3)6]Cl3 are rarely reported.

Key words: Hexamine cobalt(Ⅲ) chloride, Prepare, Improvement, Hydrochloric acid concentration