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Home/Compounds/Food Additive/Allura Red AC
C18H14N2Na2O8S2
496.4 g/mol
Food Additive

E129

CAS25956-17-6EC247-368-0
Category
Food Additive
Compound Class
Aromatic
Primary Use
food color additive

Allura Red AC is a synthetic naphthalenesulfonic acid dye primarily used as a food color additive. It provides a red hue to various food products and is also employed in commercial and institutional applications.

Color additive in food productsPigment in consumer products

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

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Related Compounds

ReferenceSame Category

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nutritional supplement and metabolite

ReferenceSame Category

Ponceau 4R

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Synthetic food colorant

ReferenceSame Category

Sorbitan monopalmitate

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Emulsifier and surfactant

ReferenceSame Category

(1E)-1-octenylsuccinic anhydride

CAS26680-54-6

modified cornstarch production

Referencestereoisomer of

Pigment Red 273

CAS68583-95-9

Food dye and pigment

Referencesame scaffold

Sunset yellow FCF

CAS2783-94-0

Food colorant

Referencesame scaffold

Acid orange 12

CAS1934-20-9

synthetic azo dye for coloring

Referencesame scaffold

Pigment red 48 calcium

CAS7023-61-2

Red pigment for plastics

Customs Tariff Classification

The international HS code for E129 (CAS 25956-17-6) is 3204.12.

HS code (international, 6-digit)

3204.12

EU CN code (8-digit)

3204 12 00

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers
IUPAC Name

disodium;6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate

InChIKey

CEZCCHQBSQPRMU-UHFFFAOYSA-L

SMILES

CC1=CC(=C(C=C1S(=O)(=O)[O-])OC)N=NC2=C(C=CC3=C2C=CC(=C3)S(=O)(=O)[O-])O.[Na+].[Na+]

Synonyms (44)
  • E129
  • 763 - Colours
  • ALLURA RED AC [MART.]
  • ALLURA RED C.I.16035
  • Allura Red
  • Allura Red 40
  • Allura Red AC
  • Allura Red AC (E 129)
  • Allura Red AC, Dye content
  • Allura red AC dye
  • C.I. Food Red 17
  • Curry red
  • D&C RED NO. 40
  • F D & C RED #40 LAKE
  • FD and C Red No. 40
  • FD&C Red No. 40
  • FDC Red 40
  • FDC Red 40 dye
  • Fancy Red
  • Food Red No. 40
  • Food red 17
  • INS NO.129
  • Japan Food Red No. 40
  • Japan Red 40
  • Red 40
  • Red No. 40

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