Overview
Phenacetin (CAS 62-44-2 ), also known as p-Acetophenetidide, is a synthetic acetamide compound used as a pharmaceutical intermediate and chemical building block across multiple industrial sectors.
It functions as an antioxidant stabilizer and processing aid in polymer and specialty chemical manufacturing. In plastics and polymer processing, it acts as a stabilizer to inhibit oxidative degradation during high-temperature compounding.
The pharmaceutical and fine chemical industries source it as an intermediate for synthesizing active compounds and research-grade formulations. In textile and leather processing, it is used as a surface modifier and auxiliary agent.
These applications help to improve dye uptake and substrate compatibility. Personal care formulators have historically incorporated it into preservation and stabilization systems within cosmetic manufacturing processes.
The product is supplied as a white crystalline powder in both technical and pharmaceutical-grade specifications. Standard grades include USP and BP , with pharmaceutical-grade material subject to tighter purity thresholds.
These thresholds are typically above 99% for high-purity applications. Bulk quantities are available in multi-kilogram and metric-ton packaging, with smaller quantities offered for laboratory and formulation development use.
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Physical Properties
| Melting Point | 134-135 °C |
| Boiling Point | 132 °C / 4mmHg |
| Density | 1.2404 g/cm³ |
| Flash Point | 2°C |
| Appearance | white crystalline powder |
| Color | White |
| Form | powder |
| Water Solubility | 0.076 g/100 mL |
| Refractive Index | 1.5710 |
| Log P | 1.580 |
Safety & Handling
Danger GHS07 GHS08 Hazard Statements H302 Harmful if swallowed H341 Suspected of causing genetic defects H350 May cause cancer H362 May cause harm to breast-fed children H370 Causes damage to organs H372 Causes damage to organs through prolonged or repeated exposure Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P263 Avoid contact during pregnancy and while nursing. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P301+P317 Get emergency medical help. P308+P316 Get emergency medical help immediately.
Trade & Regulatory
| HS Code | 29251995 |
| UN Number | 3077 |
| ADR Class | 9 |
| Packing Group | III |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 62-44-2
- EC Number
- 200-533-0
- Mol. Weight
- 179.22
- HS Code
- 29251995
- Category
- Pigments & Colorants