Nicotine, commonly known as nicotine, is unique to tobacco and belongs to the pyridine alkaloid. It has a strong physiological effect on humans. When smoking, it can absorb the proper amount of nicotine, can excite the spirit, eliminate fatigue, increase thinking ability, and improve work. Efficiency, but excessive nicotine can act as a suppressor and paralysis.
1. Physical properties: Nicotine is a colorless oily liquid at room temperature, soluble in water, and soluble in alcohol, ether, acetone and other organic solvents. The boiling point is 248 °C at normal pressure and 1.01 at 20 °C. It can escape with water vapor in an alkaline solution, and its content can be measured by a spectrophotometer.
2, chemical properties: nicotine in the chemical structure, with a single nitrogen-containing heterocyclic ring (ie, pyridine ring and pyrrole ring), so that nicotine can be protonated with acidic substances to form a salt.