Database/Fragrance/Disodium Succinate
Route-dependent · ISO 16128

Is Disodium Succinate natural?

It depends. Sodium salt of succinic acid, which is made both by sugar fermentation and from petrochemical maleic anhydride. Same ruling as Succinic Acid.

INCI nameDisodium Succinate
CAS150-90-3
FormulaC4H4Na2O4 · 162.05 Da
FunctionFragrance · Cleansing Surfactant
FeedstockSuccinic acid neutralised with sodium hydroxide.

Why the score varies

This ingredient is made commercially by more than one route, and ISO 16128 scores the feedstock actually used. Without a supplier certificate of origin the value cannot be claimed.

RouteFeedstockNOIShareNotes
fermentation succinic acidbio-succinic acid from glucose fermentation + sodium hydroxide1.00All natural.
petrochemical succinic acidsuccinic acid from maleic anhydride hydrogenation + sodium hydroxide0.28Only sodium counts: 46.0/162.1 = 0.28.
Ask your supplier. A batch-specific certificate of origin or bio-based carbon test (ASTM D6866) settles which route applies.

How we scored it

C4H4Na2O4 162.1 Da: 2 Na 46.0 Da mineral in both routes; succinate natural from fermentation (1.00) or petrochemical from maleic anhydride (0.28). Headline shows the best route, as the site does for every route-dependent entry.
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

Succinic acid neutralised with sodium hydroxide.

In plain English

A mild buffering ingredient that is the sodium salt of succinic acid, which can come from fermenting plant sugars or from petroleum-based chemistry depending on the supplier.

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Structure

2D structure of Disodium Succinate

disodium;butanedioate

PubChem CID 9020 ↗

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. 2Disodium Succinate. PubChem CID 9020. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3DISODIUM SUCCINATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4DISODIUM SUCCINATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=DISODIUM%20SUCCINATE