METHYL 3-(3,5-DI-TERT-BUTYL-4-HYDROXYPHENYL) PROPANOATE

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is a hindered phenolic antioxidant ester used to prevent oxidative degradation in polymers, plastics, lubricants, and fuels.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is valued for its high thermal stability, low volatility, and long-lasting antioxidative performance.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate functions by donating hydrogen atoms to neutralize free radicals, thus slowing oxidative chain reactions.

CAS Number: 6386-38-5
EC Number: 228-908-4
Molecular Formula: C18H28O3
Molecular Weight: 292.42 g/mol

Synonyms: Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate, Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoic acid ester, Antioxidant Ester, Methyl Ester of 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoic acid, Hindered Phenolic Ester, Phenolic Antioxidant Methyl Ester, Polyolefin Stabilizer Ester, Methyl DBHP Propanoate, Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate for Polymers, Hindered Phenol Methyl Ester Antioxidant, Methyl Ester Phenolic Stabilizer, Methyl Ester Antioxidant for Plastics, Methyl Ester Antioxidant for Lubricants, Methyl Ester Antioxidant for Fuels

APPLICATIONS

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used as a primary antioxidant in polyolefins such as polyethylene and polypropylene.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into polymer formulations to protect against thermal oxidation during processing.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate enhances the long-term heat stability of plastic products.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used as an antioxidant in polymer manufacturing to prevent oxidative degradation.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into polyethylene and polypropylene formulations to extend service life.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in the stabilization of polystyrene against thermal and oxidative damage.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in engineering plastics to maintain mechanical properties during processing.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into polyamide and polyester fibers for long-term stability.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in polyurethane foams to prevent discoloration and embrittlement.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in coatings and paints to protect against UV-induced oxidation.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into powder coatings to preserve gloss and durability.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in industrial paints for chemical resistance enhancement.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in adhesives to improve shelf life and prevent premature curing.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into epoxy systems to reduce oxidative breakdown.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in pressure-sensitive adhesive formulations.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in lubricants to prevent oxidation and sludge formation.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into synthetic oils to extend operational life.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in grease formulations for high-temperature stability.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in rubber processing to protect against thermo-oxidative degradation.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into automotive rubber parts to improve weather resistance.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in sealant production for extended service performance.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in packaging materials to preserve product quality during storage.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into food-contact plastics for antioxidant protection.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in barrier films to resist oxidative deterioration.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in cable insulation materials to prevent polymer breakdown.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into wire coatings for long-term flexibility retention.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in telecommunications cables for UV and oxidation resistance.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in aerospace composites for oxidative stability under extreme conditions.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into carbon fiber-reinforced polymers to maintain mechanical integrity.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in military-grade polymer systems for long-term durability.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in automotive interior components to resist fading and brittleness.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into dashboard and trim materials for heat stability.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in exterior automotive plastics for UV resistance.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in marine coatings to withstand saltwater-induced oxidation.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into boat hull composites for extended lifespan.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in marine ropes and synthetic fibers for durability.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is employed in engineering plastics such as polyamides and polyesters.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate helps maintain mechanical properties during extended service life.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in thermoplastic elastomers for improved resistance to oxidation.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is utilized in lubricant formulations to inhibit oxidative thickening.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate reduces sludge and deposit formation in automotive and industrial oils.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate improves the shelf life of synthetic lubricants.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in adhesives and sealants to prevent degradation from oxygen exposure.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate helps maintain elasticity and adhesion in polymer-based adhesives.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate extends the durability of sealants under thermal stress.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is incorporated into fuel additives to slow oxidation of hydrocarbons.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in gasoline stabilizer formulations to preserve fuel quality.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate helps maintain the performance of biodiesel during storage.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is applied in coatings and paints to protect organic components from oxidation.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate prevents yellowing and brittleness in polymeric coatings.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate improves weathering resistance of exterior coatings.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in packaging films to prevent polymer degradation during storage.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is compatible with food-contact plastics meeting regulatory requirements.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is used in flexible packaging to extend shelf life of packaged goods.

DESCRIPTION

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is a white to off-white crystalline powder with excellent thermal stability.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is a hindered phenolic antioxidant designed for long-term polymer stabilization.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is highly effective at preventing oxidative chain reactions in polymers.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is soluble in organic solvents such as acetone, toluene, and chloroform.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is compatible with a wide range of thermoplastics and thermosets.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate maintains stability at high processing temperatures.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is resistant to extraction and migration in finished products.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is widely used in applications requiring long-term color retention.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is manufactured through esterification of 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid.
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is stored in cool, dry conditions to preserve antioxidant activity.

Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate is a white to off-white crystalline powder or solid.
It is a hindered phenolic compound with a methyl ester functional group, providing both antioxidant activity and compatibility with organic systems.
The bulky tert-butyl groups enhance steric hindrance, increasing its resistance to volatilization and extraction.

This antioxidant ester is highly effective in neutralizing peroxy radicals and interrupting oxidative degradation pathways in organic substrates.
It is thermally stable up to high processing temperatures and exhibits low volatility, making it suitable for high-performance polymers.

The ester functionality improves its solubility and distribution within hydrophobic polymer matrices.
It is widely recognized for maintaining polymer color, flexibility, and mechanical strength over extended lifetimes.

PROPERTIES

Chemical Formula: C18H28O3
Molecular Weight: 292.42 g/mol
Common Name: Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate
Appearance: White to off-white crystalline solid
Odor: Faint aromatic odor
Density: ~1.05 g/cm³
Melting Point: 50–55°C
Boiling Point: Decomposes before boiling
Solubility: Insoluble in water; soluble in organic solvents such as toluene, acetone, and ethyl acetate
pH: Neutral in solution
Reactivity: Stable under normal conditions; reacts with strong oxidizing agents
Chemical Stability: Excellent thermal and oxidative stability
Storage Temperature: Store in a cool, dry, well-ventilated place away from light and moisture

FIRST AID

Inhalation:
Move the person to fresh air.
Seek medical attention if respiratory irritation occurs.

Skin Contact:
Wash thoroughly with soap and water.
Seek medical attention if irritation persists.

Eye Contact:
Rinse cautiously with water for at least 15 minutes.
Seek medical advice if irritation continues.

Ingestion:
Rinse mouth with water.
Do not induce vomiting unless directed by medical personnel.
Seek medical advice immediately.

Note to Physicians:
Provide supportive care and treat symptomatically.

HANDLING AND STORAGE

Handling:
Use personal protective equipment such as gloves, goggles, and protective clothing.
Avoid dust generation and inhalation.
Use in well-ventilated areas.

Storage:
Store in tightly closed containers in a cool, dry, well-ventilated place.
Keep away from direct sunlight, heat sources, and strong oxidizing agents.

Spill and Leak Procedures:
Avoid dust formation.
Sweep up and place in a suitable container for disposal.
Dispose of according to local regulations.