作用：韋氏試劑（Wijs）是碘值側(cè)定方法中使用的特殊試劑。

Wijs solution is a solution of containing iodochloride in glacial acetic acid. It is used as a mixture to test material (fats, oils or emulsions) for idodine value or iodine number or the ability of material to absorb iodine. often this is calculated by running a blank and a sample with same amount of wijs solution and doing a back titration often with sodium thiosulfate with known normality or molarity. question for others if iodobromide in glacial acetic acid is also known as wijs solution since that is the material i used most often to test iodine value.