Download - Iodoform test
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Iodoform Test
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分組 一些人先做上次產物測定 一些人做 Iodoform Test
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步驟 1- 鑑定上次產物 TLC:
產物用 1:3 的比例用 EA 稀釋 整組 2 片 TLC+2 支毛細管 展開液比例 1:10
FT-IR: KBr 打片 ( 油壓不要大於 450-500kg/cm2) 拿去照之前再把 sample 滴在上面 用沒有滴頭的滴管 IR 印出來之後就到助教的旁邊考試
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步驟 2- 碘仿測試 每人拿 5 個 microtube 助教已經分配好每個人要 test 哪五罐 ( 有 24
罐 )
2 滴 sample 2 滴 KI(aq)
6 滴 5-6% NaOCl ( 毒 !!! 遇酸冒氯氣 )
觀察是陰性還是陽性反應 沒反應可能要加熱
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注意 Clean Up
Tube 有沉澱 : 含鹵 tube 無沉澱 : 若能分為有機及水層就用滴管分開 ( 但大部分都是直接倒含鹵素 ) TLC: 一般有機
黃色沉澱 :OK 陽性反應 白色沉澱 : 鹽類 陰性 沒沉澱 : 陰性