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Span™ 40 pharma

Our Span range of sorbitan esters are widely used as W/O emulsifiers and when used in combination with ethoxylated sorbitan esters (the Tween range) they contribute to the overall stability of O/W emulsions. Manipulation of the Span/Tween ratio produces emulsifying systems of various HLB values, allowing the emulsification of a wide range of oils and waxes. Span 40 possesses a wax-like structure, useful when rigidity is required in topical formulations. Recommended topical usage levels of 0.5-5%.
Span™ 40 pharma
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Product details

Pharmacopoeia compliance

  • FDA-IIG listed
  • PhEur
  • USP/NF

Chemical group

  • Sorbitan ester

Administration route

  • Topical

Market application

  • Dermatology
  • Human pharmaceutical
  • Veterinary health

Functions

  • Emulsifier

Physical form

  • Off-white solid; pastilles

HLB

  • 6.70
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