Database/Film Forming/Sucrose Acetate Isobutyrate
Mostly petroleum · ISO 16128

Is Sucrose Acetate Isobutyrate natural?

Mostly not. The sugar backbone is natural but is outweighed by six petrochemical isobutyrate and two acetate ester groups.

INCI nameSucrose Acetate Isobutyrate
CAS126-13-6
FormulaC40H62O19 · 846.9 Da
FunctionFilm Forming · Plasticiser
FeedstockSucrose esterified with acetic anhydride and isobutyric anhydride…

How we scored it

Sucrose core (natural sugar) 334 Da after esterification, plus 2 acetyl (acetic anhydride, petrochemical) 86 Da + 6 isobutyryl (oxo-process, petrochemical) 426 Da, typical DS. Natural 334/847=0.39.
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

Sucrose esterified with acetic anhydride and isobutyric anhydride (both petrochemical, oxo/acetylation routes), typically 2 acetate + 6 isobutyrate groups. Sugar is the only natural fragment.

In plain English

A film-forming ingredient made by attaching petrochemical acid groups to ordinary sugar. Less than half its weight traces back to the sugar; the rest is synthetic.

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Structure

2D structure of Sucrose Acetate Isobutyrate

[(2R,3R,4S,5S)-5-(acetyloxymethyl)-5-[(2R,3R,4S,5R,6R)-6-(acetyloxymethyl)-3,4,5-tris(2-methylpropanoyloxy)oxan-2-yl]oxy-3,4-bis(2-methylpropanoyloxy)oxolan-2-yl]methyl 2-methylpropanoate

PubChem CID 31339 ↗

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. 2Sucrose Acetate Isobutyrate. PubChem CID 31339. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3SUCROSE ACETATE ISOBUTYRATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4SUCROSE ACETATE ISOBUTYRATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SUCROSE%20ACETATE%20ISOBUTYRATE