hydrophilic-lipophilic balance (HLB value) | 11 |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
performance and application | Tween 80 is a light yellow oily object at room temperature, slightly bitter, soluble in water, aniline, ethyl acetate and toluene, insoluble in mineral oil and vegetable oil. With wetting, foaming, diffusion and other properties, is an O/W type emulsifier, HLB value of 15. According to the GB25554-2010 standard, it is used as an emulsifier in pesticides, pharmaceuticals, foods and cosmetics, and also as an emulsifier in various O/W emulsions. In the textile industry as oils and lubricants. As an emulsifier, it is frequently used in combination with span 80. |
type | Non-ionic |
Chemical composition | polyoxyethylene sorbitan fatty acid ester |
technical index | acid value (in KOH)/(mg/g) according to GB25554-2010 standard item index ≤ 2.0 saponification value (KOH)/(mg/g)45~55 Hydroxyl value (KOH)/(mg/g)65~80 moisture, w/% ≤ 3.0 burning residue, w/% ≤ 0.25 arsenic (As)/(mg/kg) ≤ 3 lead (Pb)/(mg/kg) ≤ 2-oxyethylene (calculated as C2H4O),w/%65.0~69.5 |
Use | This product is widely used in oil exploration and transportation, medicine, cosmetics, paint, pigments, textiles, food, pesticides, in the production of detergent and metal surface corrosion inhibitor and cleaning agent, it is used as emulsifier, softener, finishing agent, viscosity reducer, etc. used as emulsifier, stabilizer, wetting agent, diffusing agent, penetrant, etc. |
production method | After preheating 1 mol of a silica disk 80, it is put into the reaction kettle, and the catalyst amount of sodium hydroxide aqueous solution is added under stirring, stir, vacuum dehydration. After replacing the air in the kettle with nitrogen, the temperature was raised to 140 ° C. And the ethylene oxide was started to be 22 mol. The reaction temperature was maintained at 180 to 190 ° C. After the ethylene oxide was passed, the vacuum was stopped. Cooling the feed liquid into the neutralization pot with acetic acid to the acid value of about 2, and then the appropriate amount of hydrogen peroxide to decolorize, and finally dehydrated to 3% water content, cooling discharge packaging to get the finished product. |