Tween series
Composition: polyoxyethylene sorbitan fatty acid ester
Type: non-ionic
|
Item product |
Appearance（25℃） |
Acid value
(mgKOH/g) |
Hydroxy value (mgKOH/g) |
Saponification (mgKOH/g) |
|
T-20 |
light yellow to yellow viscous substance |
≤2.0 |
90-110 |
40.0-50.0 |
|
T -40 |
≤2.0 |
85-100 |
40.0-55.0 | |
|
T -60 |
Yellow paste |
≤2.0 |
80-105 |
40.0-55.0 |
|
T -80 |
Brown yellow viscous liquid |
≤2.1 |
65-82 |
43.0-55.0 |
Performance and application: they dissolve in water and such organic solvents as methanol, alcohol, isopropanol, glycol etc., no solubility in mineral oil, being a excellent o/w emulsifier. T-20 is widely used as solubilizer, permeate agent and dispersant in medical, cosmetics and food industry. T-60 is widely used as component of polyacrylonitrile fiber finish oil and soften agent for fiber producing, and emulsifier in coat and plastic industries. T-80 is used as emulsifier, wetting agent and diffusant etc., and as blowing promoter in polyurethane foam industry with particular effectiveness.
Span series
Composition: sorbitan fatty acid ester
Type: non-ionic
|
Item
product |
Appearance(25℃) |
Acid value (mgKOH/g) |
Hydroxy value(mgKOH/g) |
saponification(mgKOH/g) |
|
S-20 |
primrose yellow to yellow viscous liquid |
≤8.0 |
330-360 |
160-175 |
|
S-40 |
yellow waxy substance |
≤10.0 |
255-290 |
140-160 |
|
S-60 |
yellow flake or waxy substance |
≤10.0 |
240-270 |
145-160 |
|
S-80 |
yellow brown transparent viscous substance |
≤10.0 |
190-220 |
140-160 |
Performance and application: S-20 has little solubility in mineral oil, Isopropanol, tetrachloroethylene and xylene, difficult to solve in water, and is milky solution after dispersion. It is used as W/O emulsifier in medicine, cosmetics and textiles industries. S-40 is used as dispersants of printing ink and oil-emulsifying, emulsifiers of emulsion polymerization, effective additives of water-resistant textile, emulsifier and finishing agent near well in oil field. S-60 is used as constituents of synthetic fiber finish oil, soften agents of fiber post processing, and emulsifiers in plastic and pesticide industry. S-80 is used as finish oil of cord of Nylon and building of finish oil for polyacrylonitrile fiber, and also used in such industries as oil drilling, printing ink, cosmetics, high-grade scouring agent, metal cutting, and machining, in addition, as emulsified explosion and food additives.