Overview
3-Aminophenol (CAS 591-27-5 ), commonly referred to as m-aminophenol, is an aromatic amine intermediate used across dye synthesis, hair color formulations, and specialty chemical manufacturing.
It functions primarily as a coupling component and reactive building block in the production of azo dyes, developers, and polymer curing agents. In textile and leather dyeing, it serves as a key intermediate.
It is used in synthesizing azo and mordant dyes that bond directly to fiber substrates. Personal care manufacturers use it as an oxidative hair dye coupler, where it reacts with primary developers to produce tones.
In polymer and resin systems, it acts as a curing agent and cross-linker, contributing to epoxy and urethane network formation. Pharmaceutical and agrochemical producers also rely on it as a synthetic intermediate.
It is essential for active ingredient manufacturing across various industrial sectors. 3-Aminophenol is supplied as an off-white to light brown crystalline powder for easy handling and processing.
Technical and synthesis-grade material is the standard commercial offering, with purity levels typically ranging from 98% to 99%+ by HPLC. This ensures consistent performance in sensitive chemical reactions.
Packaging is available in kilogram quantities through to bulk drum and bag formats to suit laboratory, pilot, and industrial-scale procurement. We provide reliable logistics for all global supply requirements.
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Physical Properties
| Melting Point | 122-123 °C |
| Boiling Point | 164 °C @ Press: 11 Torr |
| Density | 1.195 g/cm³ |
| Flash Point | 155 °C |
| Appearance | o-Aminophenol appears as colorless needles or as white crystalline substance turning tan to brown on exposure to air. |
| Color | White to pinkish or light gray |
| Odor | odorless |
| Form | Crystalline Powder |
| Water Solubility | 35 g/L (20 ºC) |
| Vapor Pressure | 0.019Pa at 20℃ |
| Refractive Index | 1.5444 (estimate) |
| pH | 6.8 (10g/l, H2O, 20℃) |
| Log P | 0.183 at 20℃ |
Safety & Handling
Warning GHS07 GHS09 GHS08 GHS06 Hazard Statements H302 Harmful if swallowed H311 Toxic in contact with skin H316 Causes mild skin irritation H317 May cause an allergic skin reaction H319 Causes serious eye irritation H332 Harmful if inhaled H371 May cause damage to organs H373 May causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects H411 Toxic to aquatic life with long lasting effects H302+H332 Harmful if swallowed or if inhaled Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P262 Do not get in eyes, on skin, or on clothing. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P308+P316 Get emergency medical help immediately. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P361+P364 Take off immediately all contaminated clothing and wash it before reuse. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
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
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Chemical Properties
- CAS Number
- 591-27-5
- EC Number
- 209-711-2
- Mol. Weight
- 109.13
- HS Code
- 29222900
- Category
- Amines