Caffeic acid is a kind of organic acid naturally existing in coffee, edible and non-edible plants. It is a light yellow powder, and its alkaline solution is orange red. Caffeic acid shows good solubility in hot water and cold ethanol, but relatively poor solubility in cold water. Caffeic acid turns dark green when it meets a solution of ferric chloride.
Different preparation methods of caffeic acid will have a corresponding influence on the morphology of caffeic acid. Caffeic acid prepared from concentrated aqueous solution has yellow crystal appearance, while caffeic acid prepared from dilute aqueous solution is monohydrate.
When we operate caffeic acid, will find it on our skin, the eye has certain stimulating, and may also has certain harm to the environment, therefore, we in the use of caffeic acid, should be in strict accordance with the provisions of the correct operation, chemical safety goggles, at the same time also need to be worn in anti-static overalls, wear protective gloves, protective measures, such as not smoking If the concentration of caffeic acid is high, a gas mask should be used and self-contained breathing apparatus should be worn in case of leakage.
Caffeic acid has a variety of effects, and is widely used in medicine, health care products, cosmetics and other fields, remind everyone, in the use of caffeic acid time should be standardized operation, improve the safety of use.