Sorbitol, also known as sorbitol. It is white hygroscopic powder or crystalline powder, flakes or granules, odorless. Depending on the crystallization conditions, the melting point changes in the range of 88~102℃, and the relative density is about 1.49. Easily soluble in water (1g dissolves in about 0.45mL water), slightly soluble in ethanol and acetic acid. It has a refreshing sweetness, the sweetness is about half that of sucrose, and its caloric value is similar to that of sucrose. According to the understanding of sorbitol supply: in the food industry, sorbitol liquid with a content of 69~71% is mostly used. Sorbitol liquid is a clear, colorless, syrupy liquid with a sweet taste, neutral to litmus, and miscible with water, glycerin and propylene glycol. Can be used as nutritive sweetener, humectant, chelating agent and stabilizer.
Sorbitol-based surfactants are widely used in industry:
Sorbitan fatty acid esters synthesized from sorbitol dehydration and fatty acids They are collectively called Span surfactants, and their poly(oxyethylene) derivatives are collectively called Tween surfactants. Span and Tween are called third-generation surfactants. They are usually used together, often as emulsifiers, and have little irritating effect on the skin.
Among them, sorbitan fatty acid esters synthesized from sorbitol and fatty acids, and products further hydroxyethylated with ethylene oxide on this basis, are the basic raw materials for preparing various surfactants. These surfactants can be used as emulsification, diffusion, defoaming, humidification, wetting, penetrating agents, etc., and are used in chemical fiber, printing and dyeing, construction, mining and metallurgy, petroleum, medicine, papermaking, food and other industries. Incorporating sorbitan into paints can also improve the dispersion of water-based paints. Sorbitan monooleate can be used as a corrosion inhibitor. Spraying polyoxyethylene sorbitan monopalmitate and monostearate on the surface of glassware can reduce the possibility of breakage.
微信扫一扫打赏
