Curcumin

Details:

Wuhan ZeShanCheng Biomedical Technology Co., Ltd. is located in Wuhan, the economic and geographical center of China and known as the "thoroughfare of nine provinces". It is a technology-based enterprise integrating R & D and sales. The company adheres to the concept of "technology first, customer first". We always provide customers with good products, technical support and perfect after-sales service.

Main products: cosmetic raw materials (whitening series, preservatives, sunscreens, rheological modifiers, surfactants, etc.), chemical raw materials (catalysts, additives, starting materials, etc.).

Curcumin

CAS No.: 458-37-7

Molecular formula: c21h20o6

Molecular weight: 368.38

Melting point 183 ° C

Boiling point 418.73 ° C (rough estimate)

Density 0.93

Vapor density 13 (vsair)

Refractive index 1.4155-1.4175

Flash point 208.9 ± 23.6 ° C

Storage condition 2-8 ° C

Solubility ethanol: 10mg / ml

Acidity coefficient (PKA) 8.09 (AT25 ℃)

Chemical properties: orange yellow crystalline powder. It has a special smell. Melting point 179 ~ 182 ℃. Insoluble in water and ether, soluble in ethanol, glacial acetic acid and propylene glycol. It is reddish brown under alkaline conditions and light yellow under acidic conditions. It forms a yellow red lake with magnesium hydroxide. It forms chelates with metal ions, especially iron ions, resulting in discoloration. About 5mg / kg iron ions begin to affect the pigment. When it is more than 10mg / kg, it becomes reddish brown and the dyeing capacity is reduced. Therefore, appropriate containers need to be selected. Sodium hexapyrophosphate and sodium metaphosphate are best used together. Poor light resistance, iron ion resistance and good heat resistance. Strong dyeing power (especially for protein). Each molecular structure has two active phenol structures, so it has a certain antioxidant capacity.

Application: it is widely used for coloring food, dishes, cakes, candy, canned drinks, cosmetics and medicine.

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