Overview
4-Chloroaniline ( CAS 106-47-8 ), also known as para-Chloroaniline or p-Chloroaniline, is an aromatic amine intermediate used across dye, agrochemical, and polymer manufacturing.
It functions primarily as a building block for synthesizing pigments, biocides, and curing agents rather than as a finished product in its own right for industrial applications.
In dye and pigment production, it serves as a key intermediate for azo dyes used in textile and leather coloring, where consistent purity directly affects color yield and batch reproducibility.
Agrochemical formulators use it to produce herbicide and pesticide active ingredients, making raw material specification a critical procurement decision for large scale manufacturing.
In polymer and rubber applications, it contributes to the synthesis of curing agents and cross-linkers that influence final material hardness and thermal resistance in various environments.
Personal care and cosmetics manufacturers source it as an intermediate in the production of certain hair dye precursors and preservative compounds used in global consumer markets.
This chemical is supplied as a white to pale yellow crystalline solid. Technical grade is the standard commercial form, with high-purity grades available for pharmaceutical intermediate use.
It is typically packaged in drums or IBCs, with bulk quantities available for industrial-scale procurement. Specialty chemical applications may require specific handling and storage protocols.
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Physical Properties
| Melting Point | 72.5 °C |
| Boiling Point | 232 °C |
| Density | 1.169 g/cm³ @ Temp: 77 °C |
| Flash Point | 120°C |
| Appearance | white or pale yellow solid |
| Color | Beige to brown-purple |
| Odor | Sweetish |
| Form | Crystalline Solid |
| Water Solubility | 0.3 g/100 mL (20 ºC) |
| Vapor Pressure | 0.15 mm Hg ( 25 °C) |
| Refractive Index | 1.5546 |
| pH | 6.9 (1g/l, H2O, 20℃) |
| Log P | 1.83 at 25℃ |
Safety & Handling
Danger GHS06 GHS08 GHS09 GHS07 Hazard Statements H301 Toxic if swallowed H311 Toxic in contact with skin H317 May cause an allergic skin reaction H319 Causes serious eye irritation H320 Causes eye irritation H331 Toxic if inhaled H332 Harmful if inhaled H341 Suspected of causing genetic defects H350 May cause cancer H351 Suspected of causing cancer H370 Causes damage to organs H372 Causes damage to organs through prolonged or repeated exposure 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 H301+H311+H331 Toxic if swallowed, in contact with skin or if inhaled Precautionary Statements P203 Obtain, consult and follow expert instructions for use. 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. P318 IF exposed or concerned, get medical advice. 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+P316 Get emergency medical help immediately. 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. 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. P403+P233 Store in a well-ventilated place. Keep container tightly closed. 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 | 29214210 |
| UN Number | 2018 |
| ADR Class | 6.1 |
| Packing Group | II |
| Storage Class | 6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 106-47-8
- EC Number
- 203-401-0
- Mol. Weight
- 127.57
- HS Code
- 29214210
- Category
- Flame Retardants