Allura Red AC
CAS Number
25956-17-6
EC Number
247-368-0
E Number
E129
What is Allura Red AC?
Allura Red AC (CAS 25956-17-6), also known as E129 and FD&C Red No. 40, is a synthetic azo dye used to impart a bright red to orange-red color across food, cosmetic, and industrial applications.
Where is Allura Red AC used?
- Food and beverage: colors confectionery, soft drinks, dairy products, and processed snacks
- Personal care: lipsticks, shampoos, and bath products
- Printing and packaging: dye component in inks
- Textile and leather: uniform red dyeing
- It is effective on synthetic and blended fiber substrates.
Commercial specifications
- Food-grade material typically specified at a minimum of 85% dye content
- Food-grade specifications include FCC and E129-compliant grades
- Grades meet EU and US regulatory standards
Other Names (Synonyms)
E129|C.i. food red 17|Disodium;6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate
What are the physical properties of Allura Red AC?
Melting Point 300 °C
Boiling Point 325.16°C[at 101 325 Pa]
Density 0.448[at 20℃]
Color Dark red
Form powder
Water Solubility 53.878g/L at 25℃
Vapor Pressure 0Pa at 25℃
Log P -1.283 at 27℃
Which trade and regulatory codes apply to Allura Red AC?
HS Code 29270000
Storage Class 11 - Combustible Solids
WGK (Germany) 2