Twain and Swain are both nationally recognized food emulsifiers, of course, the Swain here refers to food grade. Many people know that Twain 80 and Span 80 can be substituted for each other at some times, but do not understand the difference between the two, today's chain set chemical xiaobian from the performance appearance and application to illustrate the difference between the two.
First of all, both Swain and Twain are nonionic surfactants. Before making Tween, you need to make a saucepan, connect the tray to ethylene oxide to get the corresponding Tween product, such as by a tray 80 molecules and 20 ethylene oxide molecules can get Tween 80.
Chemical composition: Twain 80 is polyoxyethylene sorbitan fatty acid ester, Span 80 is sorbitol fatty acid ester
Lipophilic and hydrophilic: the HLB value of Tween 80 is 15, which is commonly used as an oil-in-water emulsifier; the HLB value of Span 80 is 4.3, which is a commonly used water-in-oil emulsifier.
Appearance: Both are amber viscous liquids, viewed from the outside, and there is not much difference.
apply:
Twain 80
1. Easily soluble in water, methanol, ethanol, insoluble in mineral oil, used as emulsifier, dispersant, wetting agent, solubilizer, stabilizer, used in medicine, cosmetics, food and other industries. It can be used in polyurethane foam production, synthetic fibers, photosensitive materials to make motion picture films, all kinds of fabrics, oil fields, confidential machine tools.
2. Used as a stabilizer and foaming agent in the production of polyurethane foam; can be used as an antistatic agent in synthetic fibers, which is an intermediate of chemical fiber oil agent; used as a wetting agent and dispersant in photosensitive material film films; emulsified silicone oil in the fabric waterproofing process, which has good results, and is also used in nylon and viscose cord as an oil agent and water-soluble emulsifier, often mixed with S-80.
3. Used as oilfield emulsifier, anti-wax agent, heavy oil wetting, resistance reducing agent, near well zone treatment agent; used as precision machine tool modulation lubrication coolant, etc.
Slab 80:
1. It is difficult to dissolve in water, soluble in hot oil and organic solvent, and is a high-grade lipophilic emulsifier.
2, used in W/ O type latex explosives, nylon and viscose cord line oil agent, has a good smoothing effect on fibers. Used in the emulsification of machinery, coatings, chemicals and explosives. It is used as an emulsifier in oil drilling mud; an emulsifier in food and cosmetics production; a dispersant in the paint and coating industry; a stabilizer in the production of titanium dioxide; an insecticide, a wetting agent and an emulsifier in the production of pesticides; a co-solvent in petroleum products; and an anti-rust agent for anti-rust oil. Lubricants and softeners for textiles and leathers.
3. As a film anti-fog drop agent, it has good initial and low temperature anti-fog droplets, and the amount used in PVC is 1 to 1.5%, and the amount in polyolefin is 0.5 to 0.7%.