Acid Red 27

Acid Red 27 Basic information
Product Name:Acid Red 27
Synonyms:Amaranth R;Amaranth Usp;Basovit Red 470e;Borunil Red A-b;Cogilor Red 318.11;Cranberry Red;D &c Red 2;D And C Red No. 2
CAS:915-67-3
MF:C20H11N2Na3O10S3
MW:604.47
EINECS:213-022-2
Product Categories:Azo;Dyes and Pigments;Organics;Analytical Chemistry;Food Colors by Food Sanitation Law in Japan
Mol File:915-67-3.mol
Acid Red 27 Structure
Acid Red 27 Chemical Properties
Melting point >300°C
density 1.5
storage temp. Sealed in dry,Room Temperature
solubility H2O: soluble10mg/mL
form Crystalline Powder
Colour Index 16185
color Dark reddish-brown to dark brown
Water Solubility 50 g/L (20 ºC)
λmax520 nm
Merck 14,375
BRN 4122311
Stability:Stable. Incompatible with strong oxidizing agents.
Biological ApplicationsDetecting membrane-potential change; treating acquired resistance to GABAergic (ARG) agents
InChIKeyWLDHEUZGFKACJH-ZRUFZDNISA-K
LogP-5.13
CAS DataBase Reference915-67-3
IARC3 (Vol. 8, Sup 7) 1987
EPA Substance Registry SystemC.I. Acid Red 27, trisodium salt (915-67-3)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 36/37/39-26
WGK Germany 3
RTECS QJ6550000
HS Code 32129000
Hazardous Substances Data915-67-3(Hazardous Substances Data)
ToxicityLD50 intraperitoneal in mouse: 1gm/kg
MSDS Information
ProviderLanguage
FD&C Red No. 2English
SigmaAldrichEnglish
ACROSEnglish
Acid Red 27 Usage And Synthesis
DescriptionAmaranth (FD & C Red No. 2) consists essentially of a trisodium 2-hydroxy-l-(4-sulfonato-1-naphthy lazo)naphthalene 3,6-disulfonate and subsidiary coloring matters together with sodium chloride and/or sodium sulfate as the principal uncolored components. Amaranth may be converted to the corresponding aluminum lake.
Chemical Propertiessolid
UsesDyeing wool and silk bright bluish-red from an acid bath. Food colorant. As indicator. In color photography.
DefinitionAn azo dye derived from naphthionic and R acids.
World Health Organization (WHO)Approval of amaranth as a permitted colouring agent in foods and pharmaceutical products was withdrawn by the United States FDA in 1976, on the basis of positive findings in carcinogenicity tests which were later disputed on technical grounds and which have not been confirmed in subsequent tests. It has since been withdrawn by some other national regulatory authorities because of uncertainty regarding its safety, but elsewhere it remains widely used.
General DescriptionDark red to dark purple powder. Almost no odor. Tastes salty. pH (1% solution in water) approximately 10.8. Used to dye wool and silk bright bluish-red from an acid bath.
Air & Water ReactionsCan be explosive as an airborne dust at certain concentrations. Moderately soluble in water.
Reactivity ProfileAcid Red 27 may form toxic gases with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. May form flammable gases with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.
HazardA questionable carcinogen. May not be used in foods, drugs, or cosmetics.
Fire HazardFlash point data for Acid Red 27 are not available; however, Acid Red 27 is probably combustible.
Properties and ApplicationsStandardLight FastnessSoapingPersperation FastnessOxygen bleachingFastness to seawaterFadingStainFadingStainFadingStainISO3353-414-532AATCC5333-42211
Acid Red 27 Preparation Products And Raw materials
Raw materialsSodium nitrite–>Sodium chloride–>Aluminum chloride–>Phenol–>Aluminum hydroxide–>Aluminum sulfate–>Congo red paper–>Naphthionic acid–>Disodium 2-naphthol-3,6-disulfonate–>Amaranth red aluminium lake–>Sodium 4-amino-1-naphthalenesulfonate–>Disodium 2-naphthol-3,6-disulfonate–>Naphthionic acid–>1-Naphthol-5-sulfonic acid
Preparation ProductsAmaranth red aluminium lake

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