2-Aminophenol
CAS 95-55-6
EC 202-431-1
Formula C6H7NO
MW 109.13 g/mol
Pharmaceutical Intermediates Personal Care & CosmeticsTextile, Leather & Paper Antioxidant & StabilizerCross-linking & CuringSurface Modification & Wetting
Description
2-Aminophenol (CAS 95-55-6) is an aromatic amine-phenol compound commercially known as OAP, Fouramine OP, Benzofur GG, and C.I. 76520. It carries no assigned E-code. Registered under REACH (EC 202-431-1), it is classified within the broader aminophenol family used across colorant and chemical synthesis applications.
In oxidative hair dye formulations, 2-Aminophenol acts as a coupler, reacting with primary intermediates under alkaline conditions to develop brown and auburn shades. In textile and leather processing, it serves as a building block for azo and fur dyes, and its reactive hydroxyl and amine groups enable cross-linking within polymer matrices to improve substrate adhesion and durability.
This material is supplied as a crystalline powder and is subject to REACH registration requirements for EU import and use. Procurement teams should confirm supplier SDS documentation, purity grade, and packaging format, typically available in multi-kilogram drums or fiber containers suited to industrial volumes.
In oxidative hair dye formulations, 2-Aminophenol acts as a coupler, reacting with primary intermediates under alkaline conditions to develop brown and auburn shades. In textile and leather processing, it serves as a building block for azo and fur dyes, and its reactive hydroxyl and amine groups enable cross-linking within polymer matrices to improve substrate adhesion and durability.
This material is supplied as a crystalline powder and is subject to REACH registration requirements for EU import and use. Procurement teams should confirm supplier SDS documentation, purity grade, and packaging format, typically available in multi-kilogram drums or fiber containers suited to industrial volumes.
Physical Properties
| Melting Point | 170-174 °C |
| Boiling Point | 174 °C |
| Density | 1.328 g/cm³ @ Temp: 25 °C |
| Flash Point | 168 °C |
| Appearance | o-Aminophenol appears as colorless needles or as white crystalline substance turning tan to brown on exposure to air. |
| Color | White to brown |
| Form | Powder |
| Water Solubility | 17 g/L (20 ºC) |
| Vapor Pressure | 14 hPa (153 °C) |
| Refractive Index | 1.5444 (estimate) |
| pH | 6.5-7.5 (10g/l, H2O, 20℃) |
| Log P | 0.620 |
Safety & Handling (Learn More)
Warning GHS07 GHS08 GHS09
H
H302H317H332H341H371H372H373H400H410
P
P203P260P261P264P270P271P272P273P280P317P318P319P321P330P391P405P501P301+P317P302+P352P304+P340P308+P316P333+P317P362+P364
Trade & Regulatory
| HS Code | 29222900 |
| UN Number | 2512 |
| ADR Class | 6.1 |
| Packing Group | III |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 2 |
Other Names
O-HydroxyanilineOAPC.I. 76520Benzofur GGFouramine OPo-Aminophenol
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