p-phenetidine cas 156-43-4
Assay: 99.5%; 99%
Appearance: Light yellow or reddish brown transparent liquid
Capacity: 15000MT/year
Packaging: 200kg/Iron drum
Sample: available
related documents:
COA of P-Phenetidine 99% 156-43-4
COA of P-Phenetidine 99.5% 156-43-4
TDS of P-Phenetidine 156-43-4
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p-Phenetidine (CAS 156-43-4) Technical Guide
Table of Contents
1. Basic Properties & Specifications
| Parameter | Value |
|---|---|
| Chemical Name | 4-Ethoxyaniline (IUPAC) p-Phenetidine (Common) |
| CAS Number | 156-43-4 |
| Molecular Formula | C8H11NO |
| Molecular Weight | 137.18 g/mol |
| Physical State | Colorless oily liquid (turns reddish-brown on oxidation) |
| Melting Point | 2.4°C |
| Boiling Point | 253-255°C |
| Density | 1.0652 g/cm3 |
| Solubility | Miscible with ethanol, ether, chloroform Immiscible with water |
2. Industrial Applications
Pharmaceutical Industry
- Key intermediate for phenacetin (analgesic)
- Production of ethoxyquin (antioxidant for vitamin stabilization)
- Synthesis of antituberculosis drug ethionamide
Chemical Manufacturing
- Precursor for rubber antioxidant AW (6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline)
- Intermediate in dye production:
- Alizarin Red 5G
- Fast Acid Blue R
- Color developer for photographic materials
3. Synthesis Methods
| Method | Process | Yield | Commercial Viability |
|---|---|---|---|
| Catalytic Hydrogenation | p-Nitrophenetole + H2 (Ni/Pt catalyst) 80-140°C, 0.6-1.5MPa |
92-95% | Most common industrial method |
| Sulfide Reduction | Na2S reduction of nitro compound | 85-88% | Environmental concerns |
| Phase-Transfer Catalysis | TBAB-mediated reduction in biphasic system | 89-91% | High catalyst cost |
4. Safety & Handling Protocols
Hazard Classification
- Toxic upon inhalation, ingestion, or dermal exposure
- Decomposes at >255°C releasing toxic NOx fumes
Protection Measures
- PPE Requirements:
- Chemical-resistant gloves (nitrile)
- Full-face respirator with organic vapor cartridges
- Impervious protective clothing
- Storage: Steel drums in ventilated area ≤25°C
- Spill Management: Absorb with inert material, neutralize with dilute HCl
5. Supplier Comparison
| Supplier | Purity | Packaging | MOQ |
|---|---|---|---|
| Shanghai JiZhi Biochemical | 98% | 100g, 500g glass bottles | 100g |
| Jiangsu PuLisi Bio-Tech | 99% | 1kg steel drums | 25kg |
| Zhongdan Group | 99.5% | 200kg steel drums | 500kg |
6. Case Studies
Case 1: Pharmaceutical Intermediate Production
Client: Top 10 Indian Pharma Manufacturer
Application: Ethoxyquin synthesis for vitamin stabilization
Consumption: 8 MT/year
Result: 22% reduction in API degradation during storage
Case 2: Specialty Chemical Synthesis
Client: German Polymer Additives Producer
Application: Rubber antioxidant AW production
Consumption: 15 MT/quarter
Result: Achieved 99.2% batch consistency
Technical Consultation & Quotation
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