阿摩線上測驗
19.下列何者是半乾性油的碘價範圍？
(A)100～120
(B)80～100
(C)120～140
(D)140～160
統計： A(6917), B(1038), C(1295), D(105), E(0) #1942989
詳解 (共 10 筆)
阿摩前輩口訣:
乾性油(碘價>120):亞麻仁油、魚肝油 趕鴨趕魚
半乾性油(碘價100~120):棉籽油,胡麻油,玉米油,葵花油 半乾胡麻麵
不乾性油(碘價<100):花生油、橄欖油 不感性的花
動物脂肪為飽和--碘價<90 動物愛喝9
(A)150～180
(B)＜90
(C)120～150
(D)90～120
(A)蓖麻油（Castor oil）
(B)橄欖油（Olive oil）
(C)玉米油（Corn oil）
(D)氫化植物油（Hydrogenated vegetable oil）
(A)碘價（Iodine value）
(B)不皂化物（Unsaponifiable matter）
(C)皂化價（Saponification value）
(D)酸價（Acid value）
USP及中華藥典均沒有記載關於乾性/半乾性/非乾性油的碘價範圍，下面以國考參考用書為準：
Jenkin's Quantitative Pharmaceutical Chemistry 7E (1977)的敘述簡單整理成表格（查看完整內容）：
| 碘價範圍 | 例子 | |
Drying oils乾性油 | >120 | Linseed oil亞麻仁油 Cod liver oil雪魚肝油 |
Semi-drying oils半乾性油 | 100~120(本題) | Cotton seed oil棉籽油 Sesame oil胡麻油 |
Non-drying oils不乾性油 | <100 | Olive oil橄欖油 Almond oil杏仁油 |
| Animal fats動物脂肪 | <90 |
(原文如下：The so-called drying oils, such as linseed oil, and the fish oils, such as cod liver oil, have very high iodine numbers, usually above 120, since they contain a large proportion of unsaturated fatty acids; the non-drying oils, such as olive oil and almond oil, have relatively low iodine numbers, below 100; and the semidrying oils, such as cottonseed oil and sesame oil, have intermediate iodine values, that is, between 100 and 120. In the case of the animal fats, the iodine number is not very high, usually being less than 90.）
Tyler's Pharmacognosy and Pharmacobiotechnology p.90中的大豆沙拉油(Soybean oil)的敘述：
"It is an drying oil with an iodine value between 120 and 141 and is not useful as a cooking oil." 也指出碘價範圍介於120~141是屬於乾性油（drying oil），所以本題的(C)選項是錯誤的。
