4-Phenylazophenol

Advance your color chemistry, materials science, and analytical applications with 4-Phenylazophenol (CAS No.: 1689-82-3, CAT No.: SRCP-011). Also known as 4-hydroxyazobenzene or Solvent Yellow 7, this compound is a diaryl azo dye featuring a phenolic group, widely used in dye manufacturing, histological staining, diagnostics, varnish, polymer coloration, and specialty pigment development. Its chromophoric azo and aromatic structure grants high light stability, vivid coloring, and distinctive physical properties.

The molecular formula is C₁₂H₁₀N₂O, with a molecular weight of 198.22 g/mol. 4-Phenylazophenol typically appears as a fine brown to yellow crystalline powder with a melting point of 150–152 °C and a λ_max of 347 nm (in methanol). It is soluble in acetone, ethanol, benzene, methanol, diethyl ether, and DMSO, but insoluble in water.

Product Highlights

Technical Features & Benefits

• Intense Chromophore: Delivers vivid and stable yellow/orange color for dyes, stains, and pigments.
• Versatile Solvent Compatibility: Easily processed in polar and nonpolar organic media for coatings, plastics, and ink formulations.
• Chemically Robust: Stable at room temperature and resistant to light fading under normal storage conditions.
• Diagnostic and Analytical Use: λ_max and extinction coefficient enable precise analytical quantitation.
• Reliable Sourcing and Quality: Supplied with comprehensive batch-specific documentation.

Application Areas

• Dye manufacturing for textiles, varnishes, waxes, lubricants, and polymer coloration
• Histology and diagnostic assay staining
• Specialty pigment and ink development
• Photonic and optical materials R&D
• Intermediate for functionalized azo-derivatives

Safety & Handling

• Wear appropriate PPE including gloves, goggles, and lab coat
• Avoid dust generation, inhalation, and direct contact with eyes or skin
• Hazard codes: H315 (skin irritant), H319 (serious eye irritation), H335 (respiratory irritation), H411 (toxic to aquatic life)
• Store in a tightly closed container, protected from light, in a cool and dry area
• Dispose of in accordance with local environmental regulations

Why Choose SRIRAMCHEM Laboratories Pvt. Ltd.?

• Proven expertise in supplying high-purity colorants and fine chemicals since 2013
• Full batch-specific analytical documentation including COA and spectral data
• Custom and contract dye synthesis options available
• Experienced technical and customer service support

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Empower your color science and industrial projects with premium 4-Phenylazophenol from SRIRAMCHEM. Reach out for current pricing, samples, or custom synthesis solutions.