Span Twain is followed by a series of numbers, although according to different numbers, Span is divided into many types, many manufacturers only know what type of emulsifier they need in their own factories, but do not know what the number behind Span Twain represents?
In fact, the numbers behind Twain and Slab show different acids of carbon chains, Tween 80: polyoxyethylene 20 sorbitan monooleate; Tween 60: polyoxyethylene 20 sorbitan monostearate; Swain 60: sorbitan monostearate; Sorbitan 80: sorbitan monooleate.
The numbers that follow indicate different fatty acids, such as 20 for monolaurate; 40 for monopaltic acid (soft lipid acid) ester; 60 for monostearate; and 80 for monooleate.
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