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Brilliant Blue FCF
Other Names: CI 42090, Acid Blue 9, Disodium 4-[4-(N-ethyl-3-sulfonatobenzylamino)phenyl]-(4-hydroxy-2-sulfonatophenyl)methylene]-[1,3-cyclohexadienylidene]ammonium hydroxide, inner salt
CAS Number: 3844-45-9
Sum Formula: C₃₇H₃₄N₂Na₂O₉S₃
Molar Mass: 792.84 g/mol
Appearance: Blue to dark blue powder or granules
Brilliant Blue FCF is a synthetic triphenylmethane dye belonging to the class of acid dyes. It is water-soluble and exhibits intense coloration, used primarily in chemical staining, spectroscopy, and dyeing processes in non-food applications.
Chemical and Physical Properties
Density: Approx. 1.6 g/cm³ (estimated)
Melting Point: > 200°C (decomposes)
Boiling Point: Not applicable (decomposes)
Solubility in Water: Highly soluble
Solubility in Other Solvents: Sparingly soluble in ethanol; insoluble in nonpolar solvents
Odor: Odorless
Applications
Analytical Chemistry: Used as a tracer dye and in spectrophotometric analysis.
Staining Agent: Commonly employed in biological staining protocols (e.g., electrophoresis, histology).
Industrial Dyeing: Utilized in dyeing textiles and in non-food coloring applications.
Environmental Science: Used in hydrological tracing and visibility studies in water systems.
Safety
Signal Word: Warning
Hazard Statements:
H315: Causes skin irritation.
H319: Causes serious eye irritation.
H335: May cause respiratory irritation.
Precautionary Statements:
P261: Avoid breathing dust.
P264: Wash hands thoroughly after handling.
P271: Use only outdoors or in a well-ventilated area.
P280: Wear protective gloves and eye protection.
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
P337+P313: If eye irritation persists: Get medical advice/attention.
Handling and Storage
Storage Conditions: Store in a tightly sealed container in a dry, cool, and well-ventilated place. Protect from light and humidity.
Handling Precautions: Avoid dust formation and prolonged exposure. Use appropriate personal protective equipment and good laboratory practice.