Database/Antistatic/Sodium Lauroyl Isethionate
Mostly natural · ISO 16128

Is Sodium Lauroyl Isethionate natural?

Mostly. Coconut-derived lauric acid and mineral sulfonate dominate the mass; only the ethylene-oxide linker is petrochemical.

INCI nameSodium Lauroyl Isethionate
CAS7381-01-3
FormulaC14H27NaO5S · 330.42 Da
FunctionAntistatic · Cleansing
FeedstockMade by esterifying coconut-derived lauric acid with sodium…

How we scored it

Lauroyl C12H23O 183 Da + SO3Na 103 Da (natural) = 286 Da; + C2H4O 44 Da (petrochemical, ex-ethylene oxide) = 330 Da; 286/330 = 0.87.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Made by esterifying coconut-derived lauric acid with sodium isethionate, itself made from petrochemical ethylene oxide plus mineral sodium bisulfite. The fatty acid and mineral sulfonate dominate the mass.

In plain English

A gentle, mild cleansing agent common in syndet bars and facial cleansers. Made from coconut-derived lauric acid combined with a small mineral-sulfonate linking group. Mostly plant and mineral in origin.

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Structure

2D structure of Sodium Lauroyl Isethionate

sodium 2-dodecanoyloxyethanesulfonate

PubChem CID 23668826 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2Sodium Lauroyl Isethionate. PubChem CID 23668826. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3SODIUM LAUROYL ISETHIONATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4SODIUM LAUROYL ISETHIONATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SODIUM%20LAUROYL%20ISETHIONATE