Polysorbate (Tween 20/40/60/65/80)

Polysorbates are a class of emulsifiers used in pharmaceuticals, cosmetic and food preparation. It has more hydrophilic groups in the molecule, so it is highly HLB value(10~17).It is often used as an oil-in-water (O/W) type emulsifier. 

(1) Polysorbate 20

• English name: Polyoxyethylene (20) Sorbitan monolaurate or Polysorbate 20
• Code name: Polyoxyethylene sorbitan monolaurate (Tween 20)
• Appearance:light yellow to yellow oily liquid
• HLB Value:   16.7
• CAS number: 9005-64-5
• Chemical formula: C58H114O26

(2) Polysorbate 40

• English name: Polyoxyethylene (20) Sorbitan Monopalmitate or Polysorbate 40
• Code name: Polyoxyethylene sorbitan monopalmitate (Tween 40)
• Appearance:yellow clear oily liquid
•  HLB Value:   15.6
• CAS number: 9005-66-7
• Chemical formula: C62H122O26

(3) Polysorbate 60

• English name: Polyoxyethylene (20) Sorbitan Monostearate or Polysorbate 60
• Code name: Polyoxyethylene sorbitan monostearate (Tween 60)
• Appearance:yellow clear oily liquid or paste
• HLB Value:   14.9
• CAS number: 9005-67-8
• Chemical formula:  C64H126O26 

4) Polysorbate 65  

• English name: Polyoxyethylene (20) Sorbitan Tristearate or Polysorbate 65
• Code name: Polyoxyethylene sorbitan tristearate (Tween 65)
• Appearance:yellow clear oily liquid or paste
• HLB Value:   10.5
• CAS number: 9005-71-4
• Chemical formula:C100H194O26 

(5) Polysorbate 80  

• English name: Polyoxyethylene (20) Sorbitan Monooleate or Polysorbate 80
• Code name: Polyoxyethylene sorbitan monooleate (Tween 80)
• Appearance:yellow clear oily liquid
• HLB Value:   15
• CAS number: 9005-65-6
• Chemical formula:  C64H124O26