Ethoxyquin
- Createtime： 2026-04-14
- Updatetime： 2026-04-15
Product Details
| useage |
Industrial use
|
| deliveryInfo |
|
| appearance |
liquid
|
| Molecular Weight |
217.31 g/mol
|
| aliasen |
|
| supplyCapacity |
50000MT/Month
|
| harbor |
Qingdao,China
|
| minorder |
1KG
|
| Appearance |
Yellow to amber clear oily liquid
|
Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Basic Information
Product Name: Ethoxyquin
CAS Number: 91-53-2
Alias: 6-Ethoxy-2,2,4-Trimethyl-1,2-Dihydroquinoline, EMQ
Molecular Formula: C14H19NO
Molecular Weight: 217.31 g/mol
IUPAC Name: 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline
Structural Information
- Structure Type: Heterocyclic aromatic amine compound, synthetic quinoline derivative
- Structural Features: Contains dihydroquinoline parent ring, ethoxy group and multiple methyl substituents. The molecular structure enables excellent antioxidant and anti-oxidative degradation performance.
Physical & Chemical Properties
- Appearance: Yellow to amber clear oily liquid
- Odor: Characteristic mild amine odor
- Melting Point: < 0 °C
- Boiling Point: 123–125 °C (2 mmHg)
- Density: 1.028–1.034 g/mL (20 °C)
- Refractive Index: 1.568–1.572 (20 °C)
- Solubility: Practically insoluble in water; miscible with ethanol, methanol, acetone, vegetable oil and most organic solvents
- Stability: Stable under normal sealed conditions. Gradually darkens when exposed to air and light. Incompatible with strong oxidants and strong acids.
Synthesis & Applications
Synthesis Method
Synthesized by condensation reaction of p-phenetidine and acetone under acidic catalysis. The crude product is purified by vacuum distillation to obtain high-purity ethoxyquin.
Main Applications
- Feed Industry: High-efficiency antioxidant and preservative for animal feed, prevents oxidation and rancidity of fats, vitamins and raw materials, prolongs shelf life.
- Food Industry: Antioxidant for edible oil, nuts and dried fruits, inhibits lipid peroxidation.
- Rubber & Polymer: Anti-ageing agent for rubber products and synthetic materials, delays material aging and deterioration.
- Aquaculture: Preservative for aquatic feed and bait.
Safety & Storage Instructions
- Hazard Classification: Mild irritant to skin, eyes and respiratory tract; low acute toxicity
- Personal Protection: Wear chemical resistant gloves, safety goggles and dust/ vapor mask. Avoid vapor inhalation and direct skin contact.
- Storage Condition: Keep container tightly sealed. Store in cool, dry and dark well-ventilated area. Keep away from air, heat sources and oxidizing substances.
- Transportation: Classified as general chemicals. Prevent leakage, strong sunlight and high temperature during transportation.
Quality & Spectral Data
- Purity (GC): ≥98.0% / ≥99.0%
- Moisture: ≤0.1%
- Refractive Index: 1.568–1.572 (20 °C)
- Relative Density: 1.028–1.034 (20 °C)
- IR Spectrum: Consistent with standard reference spectrum
Information Summary Table
| Item | Specification |
| CAS Number | 91-53-2 |
| Product Name | Ethoxyquin |
| Synonym | 6-Ethoxy-2,2,4-Trimethyl-1,2-Dihydroquinoline, EMQ |
| Molecular Formula | C14H19NO |
| Molecular Weight | 217.31 g/mol |
| Appearance | Yellow to amber oily liquid |
| Density | 1.028–1.034 g/mL (20 °C) |
| Solubility | Insoluble in water; miscible with alcohols, oils and organic solvents |
| Purity | ≥98.0% / ≥99.0% (GC) |
| Storage Condition | Sealed, cool dry dark place, away from air and oxidants |
| Hazard Property | Low toxicity, mild irritant |
| Main Usage | Feed antioxidant, food preservative, rubber anti-ageing agent |
