Ethoxyquin CAS 91-53-2

Ethoxyquin is a synthetic antioxidant widely used to prevent oxidation and rancidity in fats, oils, animal feeds, and certain industrial materials.

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Ethoxyquin CAS 91-53-2

CAS: 91-53-2
Molecular Formula: C14H19NO
Molecular Weight: 217.31
EINECS: 202-075-7
HS Code: 29334900
Synonyms: 1,2-dihydro-2,2,4-trimethyl-6-ethoxyquinoline; 2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline; 6-ethoxy-1,2-dihydro-2,2,4-trimethyl-quinolin; 6-Ethoxyl-2,2,4-trimethyl-1,2-dihydrquinoline; amea100; antageaw; AntioxidantAW; antioxidantec

What is Ethoxyquin CAS 91-53-2?

Ethoxyquin CAS 91-53-2 is a quinoline-based antioxidant originally developed to protect natural and synthetic substances from oxidative degradation. It appears as a yellow to amber viscous liquid with a mild aromatic odor and exhibits excellent stability and solubility in fats and organic solvents.

Chemically, Ethoxyquin functions as a free radical scavenger, interrupting oxidative chain reactions in materials that contain unsaturated fatty acids, pigments, or other oxidation-prone compounds. It’s notably more effective and thermally stable than many natural antioxidants.

It is extensively used in animal feed preservation, rubber stabilization, and food preservation (in regulated, limited uses). Due to its strong antioxidative performance, it ensures the nutritional integrity and color stability of products under long-term storage conditions.

Specifications of Ethoxyquin CAS: 91-53-2

Property	Value
Melting Point	<0°C
Boiling point	123-125°C
Density	1.03 g/mL at 20 °C (lit.)
Color	Yellow to Very Dark Brown
Form	powder to crystal
Fp	137 °C
pka	8.22±0.15(Predicted)
InChIKey	DECIPOUIJURFOJ-UHFFFAOYSA-N
Solubility	Ethanol: 50 mL/L, clear, brown
Storage Temp.	2-8°C

Features

Powerful Antioxidant Efficiency: Prevents rancidity, discoloration, and nutrient loss in feed and fats.
High Thermal Stability: Remains active under high processing or storage temperatures.
Broad Compatibility: Effective in fats, oils, pigments, and polymer systems.
Excellent Solubility: Readily soluble in organic solvents, fats, and oils.
Long-Lasting Protection: Offers extended oxidative stability during storage and transport.
Economical: High efficacy allows low usage rates compared to other antioxidants.

Applications

Animal Feed Industry:
1. Widely used as an antioxidant in poultry, fish, and pet feed.
2. Prevents oxidation of fats, vitamins (A, E), and carotenoids in feed formulations.
3. Maintains nutrient value, color, and palatability during storage.
Food Preservation (regulated use):
1. Previously approved in limited quantities to preserve color and freshness in spices like chili powder and paprika oleoresin.
2. Its use in human food is now highly regulated or restricted in many regions due to safety limits.
Rubber and Polymer Industry:
1. Functions as a stabilizer to prevent thermal and oxidative degradation of synthetic rubbers and plastics.
2. Extends the life and performance of tires, gaskets, and other rubber products.
Industrial Oils and Lubricants:
1. Prevents oxidation in lubricating oils, turbine oils, and biodiesel.
2. Enhances product stability during high-temperature operations.
Color and Pigment Stabilization:
1. Used in stabilizing natural pigments (like carotenoids) in animal feed and colorant systems.

Packaging

Mikem offers flexible packaging options, including 25 kg of fiber drums for liquid products and 15–25 kg PP/PE bags for powder products, all customizable to meet your specific needs.

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