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N,N-Dihydroxyethylaniline (also known as N-phenyldiethanolamine or NNDHEA) is a tertiary aromatic amino-alcohol used principally as a coupling component in azo, disperse, and acid dyes, and as a versatile intermediate in pharmaceutical and specialty-chemical synthesis. Its bifunctional structure — an aniline nitrogen bearing two hydroxyethyl groups — makes it a reliable building block for textile colourants, corrosion inhibitors, and active-ingredient manufacture. Royalchem Spain supplies industrial-grade material at ≥ 97% assay (higher-purity grades available), EINECS-listed under 204-368-5, and delivered from our Valladolid distribution hub in 25 kg fibre drums or on pallets.
| Assay (GC) | ≥ 97.0% |
| Appearance | White to pale-yellow crystals or powder |
| Melting Point | 56 – 58 °C |
| Molecular Weight | 181.23 g/mol |
| Water Content (KF) | ≤ 0.1% |
| Density (20 °C) | ≈ 1.1 g/cm³ |
| Boiling Point | 270 °C |
| Solubility (water, 20 °C) | ≈ 45 g/L |
Primary coupling component for azo, disperse, and acid dyes. It is the precursor to C.I. Acid Red 299 (Nylosan Rubine N-5BL) for dyeing wool, nylon, and leather, and to numerous disperse dyes (e.g. the Disperse Red and Disperse Brown ranges) used on polyester and synthetic fibres.
A building block in the synthesis of active pharmaceutical ingredients, including phenylephrine and alkylating-type agents. Its two reactive hydroxyethyl groups provide convenient sites for downstream functionalisation.
Used as a metal corrosion inhibitor that forms a protective adsorbed film on metal surfaces, as a component of hair-colourants and personal-care formulations, and as an intermediate for fluorescent / coumarin dyes and electronic resin systems.
Standard Packaging:
25 kg fibre drums, or 25 kg kraft-paper bags with PE inner liner, palletised; cartons available on request. Distributed by Royalchem Spain from our Valladolid hub. Shelf life 24 months in original sealed packaging.
Storage Conditions:
Store in tightly closed containers in a cool (below 30 °C), dry, well-ventilated area, away from direct sunlight, heat, and moisture; note the product softens and melts near 56 °C. Keep containers upright and resealed after use.