Database/Colorant/CI 71105
100% petroleum · ISO 16128

Is CI 71105 natural?

No. Synthetic indigoid vat dye built from petrochemical aromatic amine precursors; no natural-origin fragment identifiable in the structure.

INCI nameCI 71105
CAS4424-06-0
FormulaC26H12N4O2 · 412.4 Da
FunctionColorant
FeedstockManufactured indigoid vat colorant produced by industrial condensation…

How we scored it

No sulfonate or metal fragment present; entire C26H12N4O2 fused polycyclic indigoid core is synthetic aromatic chemistry → 0/412 = 0.00
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

Manufactured indigoid vat colorant produced by industrial condensation of synthetic aromatic amine intermediates. No commercially significant natural extraction route is known for this specific colorant.

In plain English

A synthetic dye from the indigo family, used to colour cosmetic products. It's manufactured from man-made aromatic chemical intermediates rather than extracted from plants.

CosIng definition: CI 71105 is classed chemically as an indigoid colour. It conforms to the formula:

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Structure

2D structure of CI 71105

3,10,17,24-tetrazaoctacyclo[13.13.2.02,10.04,9.012,29.016,24.018,23.026,30]triaconta-1(29),2,4,6,8,12,14,16,18,20,22,26(30),27-tridecaene-11,25-dione

PubChem CID 78141 ↗

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. 2CI 71105. PubChem CID 78141. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 71105. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 71105. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2071105