The role of tromethamine Tris in cosmetics

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Aminobutanol Tris, commonly known as trihydroxymethylaminomethane, is an important organic chemical raw material, which can be used in biochemical detection, organic synthesis, new material modification, pharmaceutical excipients, etc. it is also usually used as an important additive in cosmetics.

Aminobutanol is a polyol containing amino group. It is alkaline and has excellent water solubility. It is an organic base without metal ions. In the biochemical field, it is usually combined with weak acids to make biological buffer. Because of its excellent performance, it has many functions in cosmetics.

Tromethamine Tris reagent

1. Tris maintains cosmetic pH

The dissociation constant pKa of ambuterol at room temperature (25 ℃) is 8.06, and the pH buffer range is 7.0-9.0. Its buffer effect is also used in the pH control of cosmetics. People's skin needs to be in a mild state. The pH must be near neutral environment (pH is about 7). Skin pH will be hurt if it is too acidic or too alkaline. It is very important to adjust the pH value of cosmetics with tris. The buffer system composed of Tris has good buffer performance at pH = 7, which can ensure the pH of various complex components of cosmetics.

2. Tris increases the reagent compatibility of the system

Tris is a polyol, which can increase the compatibility between various components of cosmetics, greatly increase the solubility of salicylic acid and other substances, and avoid the precipitation of salicylic acid. Moreover, Tris can also increase the dissolution of organic amines in cosmetics, reduce their volatilization and prevent peculiar smell.

3. Tris neutralization gel carbomer

Gel carbomer solution is acidic after water. It is necessary to adjust pH to neutral to have good thickening effect or gel effect. If sodium hydroxide is adjusted, though it can be adjusted to neutral but with metal ions added, the increase of osmotic pressure will reduce the effect of replenishing skin care products. Tris itself is alkaline and can adjust the pH of carbomer to achieve the thickening effect. At the same time, it can also act as a buffer in the system to make the pH value relatively constant.

In addition to being widely used in cosmetics, aminobutanol Tris tends to surpass phosphate buffer in plastics, coating modification, fireproof materials, and biological buffer. Tromethamine Tris produced by Desheng is an analytical reagent, which can be used in buffers, cosmetics and other materials.