Common acid (cross-linking acid) is a natural organic acid with the chemical name (2R,3R)-3-[(2E)-2-[(2S,3R))-3-[(9Z,12Z)-9,12-octadecadienoyloxy]-2-[(9Z,12Z)-9,12-octadecadienoyloxy]-2-[(2S,3R)-2,3-dihydroxypropoxy]propanoyl]oxypentanedioic acid, widely distributed in nature, mainly found in the fruits and vegetables of some plants.
The common acid has the following properties:
1. Appearance: colorless crystalline powder.
2. Melting point: About 180-185 ° C.
3. Solubility: soluble in water, ethanol and chloroform, slightly soluble in ether.
The common acid has certain uses:
1. Food additives: as a food sour flavoring agent, can increase the sour and umami taste of food.
2. Cosmetics: used in skin care products, with antioxidant and moisturizing effect.
3. Drug research: As the research object of anti-tumor and antibacterial drugs.
There are two common methods for the preparation of common acid:
1. Extracted from natural sources: extracted and purified from plant fruits or vegetables.
2. Chemical Synthesis: through a series of organic synthesis reaction.
In terms of safety, the common acid is relatively safe and does not have obvious toxicity and irritation. But in the use of the process or need to pay attention to the following matters:
1. Prevent inhalation: in the treatment of common acid, should maintain good ventilation conditions, avoid inhalation of dust.
2. Avoid skin contact: For experimental operation, should wear appropriate protective gloves and clothing to prevent skin contact.
3. Consumption restrictions: Although common acid is considered safe in food, adverse reactions may occur in individual populations. It is recommended that sensitive populations or people with a history of related allergies use it with caution.
Generally speaking, common acid is a common natural organic acid, which has many uses and is relatively safe under normal use.