TWEEN® 80 is a polysorbate surfactant which helps in stabilizing proteins and in protein membrane studies. It is regularly used for the extraction of membrane proteins and isolation of nuclei from cells.

Synonyms:
POE (20) sorbitan monooleate; Polyethylene glycol sorbitan monooleate; Polyoxyethylenesorbitan monooleate; Polysorbate 80

CAS No:
9005-65-6

Molecular Weight:
1309.68

Appearance:
Yellow-golden yellow, viscous liquid

Hydroxyl Number:
65-80 KOH/g

Specific Gravity:
1.06-1.09

Refractive Index:
1.472

Water (KF):
≤3%

Viscosity:
300-500cS

Polyoxyethylene:
65-70%

Saponification Value:
45-55

1,4 Dioxane:
≤0.0001%

Heavy Metals:
≤0.001%

Residue on Ignition:
≤0.25%

RNase, DNase, Protease:
None Detected

Storage and Stability:
Store at RT. Stable for 12 months after receipt.