| 释义 |
wijs method
\ˈvīs-\ noun
Usage: usually capitalized W
Etymology: after Jacob J. Alexander Wijs died 1942 Dutch analytical chemist
: a method for determining the iodine number (as of an oil or fat) that consists in adding a solution of iodine monochloride in glacial acetic acid and estimating the excess of unused halogen by titration with sodium thiosulfate |