Allura Red

CAS 25956-17-6C18H14N2Na2O8S2MW 496.4

Allura Red (CAS 25956-17-6) — formula C18H14N2Na2O8S2, molecular weight 496.4.

Product Overview

CAS Number	25956-17-6
Molecular Formula	C18H14N2Na2O8S2
Molecular Weight	496.4
Applications	Uses: New monoazo dye proposed as color additive in various food products. [ChemIDplus], Use Classification: EPA Safer Chemical Functional Use Classes -> Colorants, Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern, Fragrance Ingredients, Food Additives -> COLOUR -> JECFA Functional Classes, Cosmetics -> Hair dyeing, Cosmetic colorant, Industry Uses: Dye, Consumer Uses: Pigment, Dye, Household Products: Information on 140 consumer products that contain FD&C Red #40 in the following categories is provided:, • Commercial, Institutional, • Hobby, Craft, • Home Maintenance, • Inside the Home, • Personal Care, U.S. Production: 2023: 1, 000, 000 - <2, 500, 000 lb, 2022: 1, 000 - <5, 2021: 1, 2020: 250, 000 - <550, General Manufacturing Information: Agriculture, Forestry, Fishing and Hunting, Food, beverage, and tobacco product manufacturing, Synthetic Dye and Pigment Manufacturing, 2-Naphthalenesulfonic acid, 6-hydroxy-5-[2-(2-methoxy-5-methyl-4-sulfophenyl)diazenyl]-, sodium salt (1:2): ACTIVE

Applications

Documented applications: Uses: New monoazo dye proposed as color additive in various food products. [ChemIDplus], Use Classification: EPA Safer Chemical Functional Use Classes -> Colorants, Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern, Fragrance Ingredients, Food Additives -> COLOUR -> JECFA Functional Classes, Cosmetics -> Hair dyeing, Cosmetic colorant, Industry Uses: Dye, Consumer Uses: Pigment, Dye, Household Products: Information on 140 consumer products that contain FD&C Red #40 in the following categories is provided:, • Commercial, Institutional, • Hobby, Craft, • Home Maintenance, • Inside the Home, • Personal Care, U.S. Production: 2023: 1, 000, 000 - <2, 500, 000 lb, 2022: 1, 000 - <5, 2021: 1, 2020: 250, 000 - <550, General Manufacturing Information: Agriculture, Forestry, Fishing and Hunting, Food, beverage, and tobacco product manufacturing, Synthetic Dye and Pigment Manufacturing, 2-Naphthalenesulfonic acid, 6-hydroxy-5-[2-(2-methoxy-5-methyl-4-sulfophenyl)diazenyl]-, sodium salt (1:2): ACTIVE.

Technical Profile

What this product is

Allura Red is a chemical compound with CAS registry number 25956-17-6 and molecular formula C18H14N2Na2O8S2 (molecular weight 496.4).

Identification

CAS number: 25956-17-6

Its molecular formula C18H14N2Na2O8S2 comprises 18 C, 14 H, 2 N, 2 Na, 8 O, 2 S atoms.

Also known as: Allura Red · allura red ac

Frequently Asked Questions

What is the CAS number of Allura Red?

The CAS registry number of Allura Red is 25956-17-6.

What is the molecular formula and molecular weight of Allura Red?

Molecular formula C18H14N2Na2O8S2, molecular weight 496.4.

What other names is Allura Red known by?

It is also registered under: Allura Red, allura red ac.

What are the documented applications of Allura Red?

Recorded applications: Uses: New monoazo dye proposed as color additive in various food products. [ChemIDplus], Use Classification: EPA Safer Chemical Functional Use Classes -> Colorants, Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern, Fragrance Ingredients, Food Additives -> COLOUR -> JECFA Functional Classes, Cosmetics -> Hair dyeing, Cosmetic colorant, Industry Uses: Dye, Consumer Uses: Pigment, Dye, Household Products: Information on 140 consumer products that contain FD&C Red #40 in the following categories is provided:, • Commercial, Institutional, • Hobby, Craft, • Home Maintenance, • Inside the Home, • Personal Care, U.S. Production: 2023: 1, 000, 000 - <2, 500, 000 lb, 2022: 1, 000 - <5, 2021: 1, 2020: 250, 000 - <550, General Manufacturing Information: Agriculture, Forestry, Fishing and Hunting, Food, beverage, and tobacco product manufacturing, Synthetic Dye and Pigment Manufacturing, 2-Naphthalenesulfonic acid, 6-hydroxy-5-[2-(2-methoxy-5-methyl-4-sulfophenyl)diazenyl]-, sodium salt (1:2): ACTIVE.

PubChem Public Data

Independent reference data for Allura Red (CAS 25956-17-6), compiled from public chemistry databases.

Registry identifiers across databases

CAS Registry Number	25956-17-6
PubChem CID	33258
Molecular formula	C18H14N2Na2O8S2
IUPAC name	disodium;6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate
UNII (FDA)	WZB9127XOA

Computed descriptors

Molecular Weight	496.4
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	10
Rotatable Bond Count	3
Exact Mass	495.99869632
Monoisotopic Mass	495.99869632
Topological Polar Surface Area	185
Heavy Atom Count	32

Documented uses on record

Synonyms and trade names

E129; RefChem:1084024; Allura Red AC; 25956-17-6; Allura Red; Allura red AC dye; Food red 17; Fancy Red; Food Red No. 40; C.I. Food Red 17; FD&C Red No. 40; Allura Red 40; Japan Red 40; Curry red; ALLURA RED C.I.16035; Japan Food Red No. 40

Regulatory listings held on file

Regulatory & Food Contact	COLOUR: Food Additives 0â7 mg/kg bw ">TRS 1000-JECFA 82/13 FAS 73 JECFA 82/4 CIR / INCI: Cosmetic colorant; Hair dyeing
GHS notification summary	100% (345 / 345)

GHS hazard classification

GHS notification summary	100% (345 / 345)

This chemical does not meet GHS hazard criteria for 100% (345 of 345) of all reports.

Reported as not meeting GHS hazard criteria by 345 of 345 companies. For more detailed information, please visit ECHA C&L website.

What the public record says

Allura Red · CAS 25956-17-6 · C18H14N2Na2O8S2. UNII WZB9127XOA.

Physical description and handling notes

Source: PubChem / Wikidata; the batch COA governs where values differ.