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To a solution of 3.14 grams (0.02 mole) n-heptylisothiocyanate dissolved in 15 milliliters of benzene is added 2.58 grams (0.02 mole) n-octylamine. The temperature rose to 41° C. The mixture was then refluxed on a steam-bath for about 20 minutes, until the mixture reached a neutral pH. The solution was then evaporated under vacuum. A yield of 6.03 grams of 1-n-heptyl-3-n-octylthiourea was obtained.

1. customrose to 41° C
2. temperatureThe mixture was then refluxed on a steam-bath for about 20 minutes, until the mixture
3. customThe solution was then evaporated under vacuum