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Chrysoine resorcinol is a synthetic azo dye which was formerly used as a food additive.
In Europe, Chrysoine resorcinol was banned as a food additive in 1977.
In the US, Chrysoine resorcinol was banned in 1988.
CAS: 547-57-9
MF: C12H11N2NaO5S
MW: 318.28
EINECS: 208-924-8
Synonyms
4-((2,4-dihydroxyphenyl)azo)-benzenesulfonicacimonosodiumsalt;4-[(2,4-dihydroxyphenyl)azo]-benzenesulfonicacimonosodiumsalt;TROPAEOLIN O C.I. NO. 14270;TROPAEOLIN OO C.I. NO. 13080;FAST YELLOW C.I. NO. 13080;AcidOrange6(C.I.14270);TROPAEOLIN O FOR C.I. No 14270;TROPAEOLIN 0
Chrysoine resorcinol can be used as a pH indicator with a color change between pH 11 and pH 12.7.
In colorimetry, Chrysoine resorcinol has an absorption maximum of 387 nm.
Chrysoine resorcinol is a reactive dye that possesses the ability to form hydrogen bonds with hydroxyl groups.
Chrysoine resorcinol has been used in pharmaceutical preparations as a dye for serum and urine samples.
Chrysoine resorcinol is also used as an indicator for the presence of fatty acids in human serum.
The reactive dye is cationic and can be used to detect anionic surfactants, such as sodium dodecyl sulfate, which are commonly found in detergents and soaps.
Chrysoine resorcinol exhibits synchronous fluorescence when it reacts with hydroxyl ions.
This property can be useful for detecting the presence of hydrochloric acid in a sample or identifying p-hydroxybenzoic acid (a product of human metabolism) in urine samples.
Chrysoine resorcinol is an acidic monoazo dye that undergoes a coupling reaction under pH=10.5 conditions to form a blue disazo dye.
Chrysoine resorcinol can be used for the determination of palladium(II), osmium(IV), albumin, and casein.
Chrysoine resorcinol is a synthetic azo dye commonly used in various applications, including textiles, food, and cosmetics.
Chrysoine resorcinol is characterized by its vibrant orange color, which results from the presence of azo functional groups (-N=N-).
Chrysoine resorcinol is water-soluble, making it suitable for use in aqueous solutions.
The dye exhibits good lightfastness and stability under acidic conditions, which is advantageous for its application in dyeing processes.
However, like many azo dyes, Chrysoine resorcinol may raise environmental and health concerns due to the potential release of aromatic amines upon degradation.
Therefore, Chrysoine resorcinol's use is often regulated in certain industries.
In terms of chemical structure, Chrysoine resorcinol contains sulfonic acid groups that enhance its solubility and affinity for various substrates.
Overall, while Chrysoine resorcinol is effective for coloring purposes, considerations regarding safety and environmental impact are essential when utilizing this dye in commercial products.
Chrysoine resorcinol Chemical Properties
Melting point: >300°C
Storage temp.: Room Temperature
Solubility: Solubility Soluble in water, ethanol
Pka: 11.5, 11.9(at 25℃)
Form: Powder
Colour Index: 14270
Color: Rust to dark brown
PH Range: Yellow (11.0) to red (12.7)
PH: 11-13
Odor: Odorless
Water Solubility: Soluble in water and alcohol
λmax: 490nm
Merck: 14,9775
BRN: 4173410
Major Application: Photoresists, image forming materials, nonlinear optical (NLO) materials, etching, photography, inks, markers, lithium battery, leather dyes, polishing stainless steel, concrete, automobile radiators, textiles, cleaners, hair dyes, food storage, cosmetics, immunomodulating agents, disinfectant, antihistaminic agent, antimicrobial agent, nucleic acids
LogP: 1.673 (est)
CAS DataBase Reference: 547-57-9(CAS DataBase Reference)
EPA Substance Registry System: Chrysoine resorcinol (547-57-9)
Soluble in water for golden brown, soluble in ethanol lemon yellow, soluble in acetone and soluble fiber element, insoluble in other organic solvents.
The strong sulfuric acid for yellow, diluted for lemon yellow; In nitric acid solution for yellow.
Chrysoine resorcinol's water solution to join strong hydrochloric acid for golden brown; Add thick sodium hydroxide solution for palm orange. Used for wool, silk, cotton, vinegar, polyamide fiber and fiber dyeing.
Also used in leather, biological dyeing, also used in indicator (pH 12 ~ 14).
