CAS:92952-81-3 | 4-((3-Hydroxypropyl)amino)-3-nitrophenol

The substance corresponding to CAS No. 92952-81-3 is 4-((3-Hydroxypropyl)amino)-3-nitrophenol, also known as 3-Nitro-4-(hydroxypropylamino)phenol, 3-Nitro-N-(2-Hydroxypropyl)-4-Aminophenol, etc. Its molecular formula is C₉H₁₂N₂O₄, and its molecular weight is 212.2026.

4-((3-Hydroxypropyl)amino)-3-nitrophenol appears as light yellow crystals or powder. It is slightly soluble in water and readily soluble in organic solvents such as ethanol, ether, and acetone. It has two functional groups, the hydroxyl group and the amino group, and also contains a nitro group. Its chemical properties are reactive, and it is prone to reduction and oxidation reactions. Its melting point is 108-109 ºC, density is 1.414 g/cm³, boiling point is 438.6 ºC at 760 mmHg, and refractive index is 1.655.

Uses:

Application in hair dye: 4-((3-Hydroxypropyl)amino)-3-nitrophenol is a commonly used intermediate in hair dyes. For example, it is used as HC Red BN in hair dye formulations, which can impart a red hue to the hair, helping to achieve the hair dyeing effect, and it has certain color fastness and glossiness.

Method of Preparation:
The synthesis of 3-nitro-4-hydroxypropylaminophenol can use phenol as the starting material, after nitration reaction and hydroxypropylamine, and then after acid-base neutralisation and crystallisation steps to get the target product.

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