TMQ (RD) is a high-performance antioxidant widely used in the rubber industry for its superior thermal and oxidative aging resistance. This article provides a comprehensive overview of its chemical properties, applications, and safety considerations.

Chemical Properties

TMQ (RD) is a polymerized form of 2.2.4-trimethyl-1.2-dihydroquinoline. It is a brown to amber flake or granule, with a specific gravity of 1.05 g/cm³. It is soluble in benzene, chloroform, carbon disulfide, and acetone, but insoluble in water.

Applications

TMQ (RD) is a versatile antioxidant used in a wide range of rubber products due to its excellent anti-aging properties:

Tires: Particularly suitable for radial tires (both full-steel and semi-steel), offering improved wear resistance and heat resistance.

Hoses and Belts: Enhances the lifespan of rubber hoses and belts by delaying the aging process and improving durability.

General Rubber Products: Used in rubber tubes, rubber overshoes, and general industrial rubber products.

Packaging and Storage

TMQ (RD) is typically packaged in 25 kg paper bags lined with plastic bags or in kraft paper bags. It should be stored in a cool, well-ventilated area to maintain its quality.

Safety and Handling

TMQ (RD) is classified as a hazardous substance:

H302: Harmful if swallowed.

H315: Causes skin irritation.

H319: Causes serious eye irritation.

Precautionary Statements:

P261: Avoid breathing dust/fume/gas/mist/vapors/spray.

P280: Wear protective gloves/protective clothing/eye protection/face protection.

P305 + P351 + P338: If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.

P333 + P313: If skin irritation or rash occurs: Get medical advice/attention.

Conclusion

TMQ (RD) is a high-performance antioxidant that provides excellent thermal and oxidative aging resistance, making it ideal for use in a wide range of rubber products. Its versatility and effectiveness make it a popular choice in the rubber industry. Proper handling and storage are essential to ensure its safe and effective use.