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E129 allura red AC is a red dye commonly used in food.
E129 allura red AC is usually supplied as its red sodium salt but can also be used as the calcium and potassium salts.
E129 allura red AC is a synthetic azo dye used as a red food colorant in a wide range of products.
CAS Number: 25956-17-6
Molecular Formula: C18H17N2NaO8S2
Molecular Weight: 476.45
EINECS Number: 247-368-0
Synonyms:E129, RefChem:1084024, Allura Red AC, 25956-17-6, Allura Red, Allura red AC dye, Food red 17, Food Red No. 40, C.I. Food Red 17, Curry red, FD&C Red No. 40, Fancy Red, Allura Red 40, Japan Food Red No. 40, ALLURA RED C.I.16035, Japan Red 40, CI 16035, Red 40, Red No. 40, FD and C Red No. 40, WZB9127XOA, Allura Red AC (E 129), DTXSID4024436, FD & C Red no. 40, 2-Naphthalenesulfonic acid, 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfophenyl)azo)-, disodium salt, CI 16035; Food Red 17; Fancy Red;, Disodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfophenyl)azo)-2-naphthalenesulfonate, Allura Red AC (Technical Grade), FDC Red 40, CHEMBL174821, Disodium 6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-2-naphthalenesulfonate, 2-Naphthalenesulfonic acid, 6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-, disodium salt, 2-Naphthalenesulfonic acid, 6-hydroxy-5-[2-(2-methoxy-5-methyl-4-sulfophenyl)diazenyl]-, sodium salt (1:2), CCRIS 3493, MFCD00059526, FDC Red 40 dye, HSDB 7260, EINECS 247-368-0, FD&C Red 40, UNII-WZB9127XOA, E 129, al-lura red ac, C. I. 16035, 2-Naphthalenesulfonic acid, 6-hydroxy-5-(2-(2-methoxy-5-methyl-4-sulfophenyl)diazenyl)-, sodium salt (1:2), disodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, Disodium 6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate, disodium 6-hydroxy-5-[(E)-(2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate, 763 - Colours, FDC Red No. 40, ALLURA RED [FCC], FD and C Red No.40, CI-FOOD RED 17, Disodium 6-hydroxy-5-((6-methoxy-4-sulfo-m-tolyl)azo)-2-naphthalenesulfonate, EC 247-368-0, 2-Naphthalenesulfonic acid, 6-hydroxy-5-((6-methoxy-4-sulfo-m-tolyl)azo)-, disodium salt, Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, ALLURA RED AC [MI], FD&C RED NO.40, SCHEMBL324089, SCHEMBL340786, SCHEMBL563950, D&C RED NO. 40, DTXCID504436, INS NO.129, orb1684778, orb3025935, ALLURA RED AC [MART.], CHEMBL3188816, SCHEMBL29351791, SCHEMBL29671480, DTXSID70860355, INS-129, MSK2412, ALLURA RED AC DYE [HSDB], CEZCCHQBSQPRMU-UHFFFAOYSA-L, CHEBI:172687, POXPUHKJGLHZEM-DJOSVPKASA-L, POXPUHKJGLHZEM-VIPPSAFOSA-L, Allura Red AC, analytical standard, D&C RED NO. 40 [II], F D & C RED NO. 40, Allura Red AC, Dye content 80 %, FD&C RED NO. 40 [FCC], FD&C RED NO. 40 [II], Tox21_300393, TN1370, AKOS015903081, AKOS025310826, Allura Red AC 100 |Ig/mL in Water, FA17299, Disodium 6-hydroxy-5-((2-methoxy-4-sulphonato-m-tolyl)azo)naphthalene-2-sulphonate, Disodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfophenyl)azo)-2-naphthalene- sulfonate, disodium;6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate, F D & C RED #40 [VANDF], Allura Red AC 100 microg/mL in Water, NCGC00254423-01, 6-Hydroxy-5-((2-methoxy-5-methyl-4-sulfophenyl)azo)-2-naphthalene- sulfonic acid, disodium salt, BP-31017, DA-60931, sodium (E)-6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, F D & C RED #40 LAKE [VANDF], C.I.16035, CAS-25956-17-6, A0943, CI-(1975)NO.16035, E-129, F0325, NS00050913, NS00100125, D70160, Q419895, 6-Hydroxy-5-[(6-methoxy-4-sulfo-m- toly l)azo]-2-naphthalenesulfonic acid disodium, disodium;6-hydroxy-5-[(2-methoxy-5-methyl-4-sulonatophenyl)diazenyl]naphthalene-2-sulonate, 1016649-41-4, 6-Hydroxy-5-[2-(2-methoxy-5-methyl-4-sulfophenyl)diazenyl]-2-naphthalenesulfonic acid sodium, disodium;(5Z)-5-[(2-methoxy-5-methyl-4-sulfonatophenyl)hydrazinylidene]-6-oxonaphthalene-2-sulfonate, FD & C Red #40;Disodiumsaltof2-hydroxy-1-(2-methoxy-5-methyl-4-sulfonatophenylazo)naphthalene-6-sulfonate.;Brilliant Red Developing Base RB;FD&C red 40 (C.I. 16035);Disodium 6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-2-naphthalenesulfonate;Allura Red AC standard;FD and C Red No.40 ALLURA RED C.I. 16035;2-naphthalenesulfonic Acid, 6-hydroxy-5-[(6-methoxy- 4-sulfo-m-tolyl)azo]-, Disodium Salt
E129 allura red AC is an organic compound classified as an azo compound and a disulfonate.
Also known as FD&C Red 40 or E129, it is a red dye commonly used in food.
E129 allura red AC is usually supplied as its red sodium salt but can also be used as the calcium and potassium salts.
These salts are soluble in water.
In solution, its maximum absorbance lies at about 504 nm.
E129 allura red AC is an organic compound classified as an azo compound and a disulfonate.
E129 allura red AC is one of the most commonly used artificial red dyes.
It belongs to the azo dye class.
E129 allura red AC is an azo compound containing –N=N– linkages connecting aromatic rings with sulfonate groups.
These functional groups provide strong color and high water solubility.
This enables effective use in aqueous systems.
Physically, it appears as a dark red to orange-red powder or granules.
It is highly soluble in water but not in oils.
It has little to no odor.
It provides a bright red to orange-red coloration, often used to replace natural red pigments.
It has high color intensity even at low concentrations.
This makes it efficient in formulations.
Allura Red AC is highly water-soluble, allowing it to disperse uniformly in beverages, gels, and syrups.
This ensures consistent coloring.
It is mainly used in water-based systems.
It shows good stability in acidic conditions, making it suitable for soft drinks and fruit-based products.
However, it may degrade in strong alkaline environments.
This affects formulation limits.
The dye has moderate heat stability, allowing it to withstand common food processing like pasteurization.
Prolonged high heat can reduce intensity.
This limits some applications.
It has no nutritional value, serving only as a coloring agent.
Its function is purely aesthetic.
This is typical for synthetic dyes.
E129 allura red AC is best described as a highly water-soluble synthetic azo dye providing bright red coloration, widely used in food, beverage, cosmetic, and pharmaceutical applications.
E129 allura red AC was originally created by the Allied Chemical Corporation in 1971.
In the European Union, it is approved, but it must carry a warning label.
The US Food and Drug Administration considers it safe for use in food, drugs, and cosmetics.
E129 allura red AC has faced increasing pressure for removal from food in some areas, with California banning it in public schools.
E129 allura red AC also demonstrates good performance in clear liquid systems, allowing bright red coloration without turbidity.
It maintains transparency in beverages.
This improves visual clarity.
It shows pH-dependent shade variation, appearing more orange-red in acidic conditions and slightly deeper red in neutral systems.
This allows some control over final color tone.
This supports formulation design.
The dye has good compatibility with sugars and syrups, making it suitable for confectionery and sweetened beverages.
E129 allura red AC performs well in instant powders and dry mixes, where it can be pre-blended and later dissolved in water.
It disperses quickly upon reconstitution.
E129 allura red AC is often used in coatings and surface applications, such as candy shells and decorative glazes.
It provides strong and uniform surface coloration.
This enhances visual appeal.
Melting point: >300 °C (lit.)
Boiling point: 325.16℃ [at 101 325 Pa]
Density: 0.448 [at 20℃]
vapor pressure: 0 Pa at 25℃
storage temp.: Inert atmosphere, Room Temperature
solubility: Soluble in water, ethanol
form: powder
Colour Index: 16035
color: Dark red
Water Solubility: 53.878 g/L at 25℃
λmax: 504 nm
ε (extinction coefficient): ≥20000 at 501–507 nm in water at 0.01 g/L
Merck: 14,284
Stability: Very Hygroscopic, Light Sensitive
Biological Applications: Antifungal formulation; treating bone metabolic diseases, coughing, sneezing, rhinorrhea, nasal obstruction, periodontal disease, rhinitis
Major Application: cleaning products; cosmetics; food and beverages; personal care
Cosmetics Ingredients Functions: COLORANT; HAIR DYEING
InChIKey: CEZCCHQBSQPRMU-LLIZZRELSA-L
SMILES: [Na+].[Na+].COc1cc(c(C)cc1N=Nc2c(O)ccc3cc(ccc23)S([O-])(=O)=O)S([O-])(=O)=O
LogP: -1.283 at 27℃
E129 allura red AC is a type of Napthalenseulfonic acid.
E129 allura red AC came to the United States to be used in place of Amaranth, a Red Azo Dye, due to health concerns.
An Napthalenesulfonic acid is used for dye production in food products.
E129 allura red AC is added into food products to make the overall product of the food be more pleasing, attracting people to buy the product.
E129 allura red AC also shows very high tinctorial strength, meaning only small amounts are needed to achieve strong red coloration.
It reduces required dosage.
E129 allura red AC is widely used in blended color systems, where it is combined with other dyes (e.g., yellow or blue dyes) to create shades like orange, purple, or brown.
This allows flexible color design.
This improves formulation versatility.
E129 allura red AC performs especially well in acidic aqueous systems, such as soft drinks and fruit-flavored beverages.
Acidic conditions help maintain color stability.
This improves performance in drinks.
E129 allura red AC demonstrates good compatibility with hydrocolloids, making it suitable for gels like jellies and desserts.
It disperses evenly in gel matrices.
This ensures uniform appearance.
The dye shows moderate resistance to light, though prolonged exposure may cause gradual fading.
Protective packaging helps preserve color.
E129 allura red AC improves shelf life.
E129 allura red AC is commonly used in pharmaceutical syrups and tablet coatings, where it provides clear visual identification.
It helps distinguish products and dosages.
This improves usability.
E129 allura red AC is highly soluble in water due to sulfonate groups, enabling fast dissolution in liquid systems.
This ensures consistent distribution.
This enhances formulation reliability.
E129 allura red AC is generally not suitable for fat-based systems unless emulsified, due to its hydrophilic nature.
This limits its application range.
This guides formulation design.
Compared to some older dyes, E129 is more widely accepted globally, though still subject to regulation and labeling requirements.
This reflects its safety assessment status.
E129 allura red AC is a high-strength, water-soluble synthetic azo dye with strong color intensity, good stability in acidic systems, and wide use in food and related industries.
E129 allura red AC demonstrates moderate thermal stability, allowing use in processes like pasteurization and mild baking.
Extreme heat can reduce color intensity.
This limits high-temperature applications.
E129 allura red AC is sensitive to strong oxidizing agents, which can break down the azo structure and cause fading.
Controlled formulation conditions are required.
This ensures stability.
E129 allura red AC is widely used in multi-phase products, where color must remain stable in aqueous layers without migrating excessively.
It maintains separation when properly formulated.
This improves product design.
E129 allura red AC is also used in non-food applications, such as personal care and some industrial systems, where water-soluble red coloring is needed.
It provides consistent and reproducible color.
E129 allura red AC is a versatile synthetic azo dye with strong solubility, high color efficiency, and stable performance in aqueous systems, making it one of the most commonly used red colorants globally.
Uses Of E129 allura red AC:
Color additive in foods, drugs and cosmetics.
E129 allura red AC is used as a food dye and has the E number E129.
The study found increased levels of hyperactivity and attention deficit hyperactivity disorder and low er IQs were observed in children consuming the chemicals.
E129 allura red AC is banned in Denmark, Belgium, France, Switzerland, Sweden.
E129 allura red AC is a colorant.
E129 allura red AC has good stability to ph changes from ph 3 to 8, showing no appreciable change.
E129 allura red AC has excellent solubility in water with a solubility of 22 g/100 ml at 25°c.
E129 allura red AC has very good stability to light, fair to poor stability to oxidation, good stability to heat, and shows no appreciable change in stability in 10% sugar systems.
It has a yellowish-red hue and has a very good tinctorial strength.
E129 allura red AC has very good compatibility with food components and is used in beverages, desserts, candy, confections, cereals, and ice cream.
The common name is allura red ac.
E129 allura red AC is widely used in the food industry as a synthetic red colorant.
E129 allura red AC provides bright red to orange-red shades in many products.
This improves visual appeal.
In beverages such as soft drinks, fruit drinks, energy drinks, and syrups, it is commonly used due to its high water solubility.
E129 allura red AC remains stable in acidic liquids.
This ensures consistent coloration.
E129 allura red AC is applied in confectionery products, including candies, gummies, jellies, and chewing gum.
It provides strong and uniform red coloring.
This enhances product attractiveness.
E129 allura red AC is used in desserts such as puddings, jelly products, and instant mixes.
E129 allura red AC disperses easily in water-based systems.
This improves appearance consistency.
In bakery products and decorations, such as icings, glazes, and cake decorations, it provides stable red tones.
E129 allura red AC maintains color during storage.
This improves decorative quality.
E129 allura red AC is used in processed dairy and dairy-like products, such as flavored yogurts, milk drinks, and desserts.
It enhances visual appeal in colored varieties.
This improves product presentation.
E129 allura red AC is widely used in pharmaceutical products, including syrups, tablets, and capsule coatings.
It is used for coloring and product identification.
This improves usability.
In cosmetics and personal care products, such as bath products, shampoos, and some water-based cosmetics, it provides red-pink coloration.
E129 allura red AC enhances aesthetic properties.
This improves consumer appeal.
E129 allura red AC is also used in instant beverage powders and drink concentrates, where it dissolves quickly and evenly.
It ensures consistent color after preparation.
E129 allura red AC is used wherever strong, stable red coloration in water-based systems is required across food, beverage, cosmetic, and pharmaceutical applications.
E129 allura red AC is also used in flavored milk drinks and dairy desserts, where it provides consistent red or pink shades.
It performs well in aqueous and emulsified systems.
This improves visual uniformity.
In ice creams and frozen desserts, it is used to create strawberry or berry-colored varieties.
E129 allura red AC remains stable during frozen storage.
This ensures consistent appearance.
E129 allura red AC is applied in fruit preparations and fillings, especially when natural fruit color is insufficient or inconsistent.
It enhances red fruit tones.
This improves product appeal.
E129 allura red AC is widely used in chewing gum and coated sweets, particularly in sugar shells.
It provides strong surface coloration.
This improves decorative quality.
E129 allura red AC is used in gel desserts and jelly-based products, where it disperses evenly in the gel matrix.
It ensures uniform coloring throughout the product.
This improves consistency.
In pharmaceutical lozenges and oral liquids, it provides color for identification and differentiation.
E129 allura red AC helps distinguish flavors or dosages.
This improves usability and safety.
E129 allura red AC is also applied in cosmetic bath products such as bath salts, shower gels, and liquid soaps, where water-based coloring is required.
It provides bright, stable shades.
This enhances product appearance.
E129 allura red AC is used in ready-to-mix powders and dessert kits, where it dissolves quickly when water is added.
It ensures predictable coloration during preparation.
This improves consumer experience.
E129 allura red AC can be found in seasonal and decorative confectionery products, where vibrant red tones are needed for visual impact.
It supports themed product design.
E129 allura red AC is used wherever intense, stable red coloration in aqueous or semi-aqueous systems is required, especially in food, beverage, pharmaceutical, and cosmetic applications.
Safety Profile Of E129 allura red AC:
E129 allura red AC presents moderate hazard potential, mainly related to hypersensitivity reactions and behavioral concerns in sensitive individuals, although it is approved for use within regulated limits in many countries.
Safety depends on dose and individual response.
Regulatory agencies set strict intake limits.
Skin contact is generally low risk, but may cause mild irritation or allergic reactions in sensitive individuals.
Prolonged or repeated exposure can increase sensitivity.
Protective handling is recommended in industrial settings.
Eye contact may cause mild to moderate irritation, including redness and discomfort.
Direct exposure should be avoided.
Rinsing with water is recommended if contact occurs.
Inhalation of powder may cause respiratory irritation, particularly in occupational environments.
Fine particles can irritate the nose and throat.
Adequate ventilation is recommended.
Ingestion at approved levels is considered safe for the general population, but some individuals may experience intolerance or hypersensitivity reactions.
Symptoms may include skin rash, itching, or gastrointestinal discomfort.
E129 allura red AC is an azo dye, and some studies suggest a possible association with hyperactivity or behavioral effects in children, especially when consumed with other artificial colorants.
