What is span 20 used for?

Span 20 is a 100% bio-based, non-ionic surfactant, easy to handle, for use as a versatile co-emulsifier for W/O and O/W emulsions, pigment dispersant and carrier liquid. The surfactant can be used for particle morphology control in S-PVC. The main application is in decorative coatings.

What is span pharmacy?

Sorbitan esters (also known as Spans) are nonionic surfactants that are used as emulsifying agents in the preparation of emulsions, creams, and ointments for pharmaceutical and cosmetic use.

What are tweens and spans?

Abstract. Sorbitan fatty acid esters (Spans) and the corresponding polyoxyethylene (POE) adducts (Tweens) have a wide range of applications in the pharmaceutical and other industries.

What is Span80?

Span 80 is a 100% bio-based, non-ionic surfactant, easy to handle, for use as a W/O emulsifier and O/W co-emulsifier, pigment dispersant in non-polar liquids. The surfactant is used in industrial coatings.

Is span 20 water soluble?

Span-20 (Sorbitan Monolaurate) is amber to brown oily liquid. non-toxic and odorless. Span-20 is slightly soluble in isopropanol, tetracarp, xylene, cottonseed oil, and mineral oil, slightly soluble in liquid paraffin and insoluble in water, HLB=8.6.

What is the difference between span 20 and span 80?

Gel formation will start at 20% and 30% (molar percent) of cholesterol for Span 20 and Span 80, respectively. Since Span 80 is more hydrophobic (HLB = 4.3) than Span 20 (HLB = 8.6), it produced two phases of proniosomal liquids at cholesterol concentrations below 30%.

What is span in industrial pharmacy?

Span 80 is a liquid W/O emulsifier and O/W emulsion stabiliser particularly recommended for use with unsaturated lipid components such as oleyl alcohol or vegetable oils. Extensively used as a wetting agent and dispersant for materials such as zinc oxide, calamine and penicillin in lipophilic pharmaceutical bases.

What’s the difference between polysorbate 20 and polysorbate 80?

Synthetic Raw Materials Difference between Polysorbate 20 and 80. Polysorbate 20 is a product of the polymerization reaction of sorbitan monolaurate and ethylene oxide, while polysorbate 80 is synthesized by the polymerization of sorbitan monooleate and ethylene oxide.

What is the difference between Tween 20 and Tween 80?

Tween-80 (polyoxyethylene sorbitan monooleate) is oleate and Tween-20 (polyoxyethylene sorbitan monolaurate) is laurate. Tween 80 has a longer aliphatic tail and therefore more lipophilic. Tween 20 is the more hydrophilic.

Is span 20 hydrophilic or lipophilic?

Our sorbitan monolaurate (SP20 V) or SPAN 20 is a vegetable based product made according to GMP and NF standards. It is a multi-functional non-ionic lipophilic surfactant often blended with Polysorbates such as TW 20, TW60 or TW80 ionic hydrophilic surfactants to achieved optimal HLB values.

Is span 80 soluble in water?

Span-80 – Nature Amber viscous oil, insoluble in water. Soluble in general hot oil and organic solvents; With good emulsifying and dispersing power. It is a water-in-oil surfactant.

Which is better Tween 20 or Tween 80?