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| Type |
Poster Presentation |
| Area |
Industrial Chemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 19일 (금요일) 11:00~12:30 |
| Code |
IND.P-27 |
| Subject |
Freeze Protected Sanitary Liquid for Winter-season |
| Authors |
Heeseok Woo, Gyoyoon Chae, Jae Ku Jung, Won-Seok Chae*
Division of Life Science and Chemistry, Daejin University, Korea
|
| Abstract |
A sanitary liquid was prepared to prevent freezing in winter. The solution is a hygiene solution containing alcohols as a main component and a surfactant added thereto. 25% and 15% of ethanol and isopropyl alcohol were mixed, respectively, and 1% of benzalkonium chloride was added as a surfactant. The solution did not freeze for 48 hours at a temperature of minus 30 degrees. In addition, the solutions diluted to 75% and 50% did not freeze at -20 and -10° C, respectively. The concentration at which ethanol does not freeze at about -30 ° C is about 50%, and isopropyl alcohol is about 70%. However, when the two solvents were mixed with water, they did not freeze even at the lower concentration due to the synergistic effect of the colligative properties of a solution. The solution diluted to 25% was showed the 99.9% sterilizing power against Escherichia coli, Pseudomonas aeruginosa, Pneumococcus, Salmonella. |
| E-mail |
wschae@daejin.ac.kr |
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122nd General Meeting of the KCS