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鱼石脂又称鱼石磺酸铵或依克度,拉丁名称为ammonium sulfoichthyolicum,ichthammolum,ichthyolum。最早是由奥地利Tyrol地方所发现的一种鱼化石(沥青质页岩),经过干馏(400—500℃)所得的鱼石油,是一种含硫而有恶臭的焦油。将此粗制鱼石油加过量浓硫酸进行磺化,生成物用浓盐水洗滌,除去硫酸和亚硫酸,即得到磺酸鱼石油,然后加浓氨液中和并浓缩而成鱼石脂。鱼石脂为棕黑色粘稠液,有类似沥青的特异臭;可与水、甘油、脂肪、脂肪油混合,乙醇及醚中可溶介一部份。本品含NH_3在2.5%以上、硫酸铵8.0%以下,
Fish fats, also known as fish meal ammonium sulphate or eclogite, Latin name ammonium sulfoichthyolicum, ichthammolum, ichthyolum. Originally a fossil fish (asphaltic shale) found in the Tyrol region of Austria, fish oil obtained after retorting (400-500 ° C) is a stench containing stench of tar. The crude fish oil plus an excess of concentrated sulfuric acid sulfonation, the resultant was washed with concentrated brine to remove sulfuric acid and sulfurous acid, to obtain sulfonated fish oil, and then concentrated ammonia solution and concentrated into a fish fat. Fish oil is a brown-black viscous liquid with a bitter odor similar to bitumen; it can be mixed with water, glycerin, fat and fatty oils, and a part soluble in ethanol and ether. This product contains NH_3 2.5% or more, ammonium sulfate 8.0% or less,