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| Customization: | Available |
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| CAS No.: | 123-30-8 |
| Formula: | C6h7no |
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| Item | Specifications |
| Appearance | White to grey color powder |
| Purity | 98% Min |
| Moisture | 0.5% Max |
| Ash | 0.5% Max |
| Iron | 50PPM Max |
1. Fundamental Identifiers
IUPAC Name: 4-Aminophenol
Synonyms: p-Aminophenol; 4-Hydroxyaniline; PAP
CAS Registry Number: 123-30-8
Molar Mass: 109.13 g/mol
2. Physical & Chemical Properties
Appearance: White or slightly off-white (can be yellowish, pinkish, or greyish) crystalline powder or flakes. Darkens rapidly upon exposure to air and light, turning purple to brown or black.
Melting Point: ~ 186 - 189 °C (decomposes)
Solubility: Slightly soluble in cold water, more soluble in hot water. Soluble in ethanol and acetone.
Stability: Extremely susceptible to oxidation. It must be stored and handled under an inert atmosphere. Commercial products are often stabilized as salts (e.g., p-Aminophenol hydrochloride, CAS 51-78-5) or with reducing agents.
Primary Use: An important primary intermediate in oxidative hair dyes, used to produce a variety of shades, often in combination with other intermediates. Also a key intermediate in the production of paracetamol/acetaminophen (a common analgesic and antipyretic drug).
Other Uses: Used in the synthesis of azo dyes, photographic developers, and as a corrosion inhibitor.
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