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

Is Sodium Myristoyl Isethionate natural?

Mostly. Myristic acid is from coconut or palm-kernel oil and the sulfonate and sodium are mineral, but the two-carbon ethylene oxide unit of isethionate is petrochemical.

INCI nameSodium Myristoyl Isethionate
CAS37747-10-7
FormulaC16H31NaO5S · 358.5 Da
FunctionAntistatic · Cleansing
FeedstockDominant route: esterification of oleochemical myristic acid (or…

How we scored it

Natural: myristoyl C14H27O 211.4 + SO3Na 103.1 = 314.4. Petrochemical: C2H4O 44.1 (ethylene oxide unit of isethionate). Total 358.5; 314.4/358.5 = 0.88.
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

Dominant route: esterification of oleochemical myristic acid (or its acid chloride) with sodium isethionate made from ethylene oxide and sodium bisulfite. No commercially significant bio-based ethylene oxide route is scored.

In plain English

A foaming cleansing surfactant used in bars, washes and shampoos. It joins myristic acid from coconut or palm-kernel oil to isethionate, a small sulfonated unit made from ethylene oxide.

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Structure

2D structure of Sodium Myristoyl Isethionate

sodium 2-tetradecanoyloxyethanesulfonate

PubChem CID 73415784 ↗

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 Myristoyl Isethionate. PubChem CID 73415784. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3SODIUM MYRISTOYL ISETHIONATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4SODIUM MYRISTOYL ISETHIONATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SODIUM%20MYRISTOYL%20ISETHIONATE