MBTS (DM), also known as 2.2'-Methylenebis(4-methyl-6-tert-butylphenol), is a high-performance antioxidant widely used in the rubber and plastics industries. This article provides a comprehensive overview of its chemical properties, applications, and safety considerations.

Chemical Properties

MBTS (DM) is a white crystalline powder with a melting point of 110-115°C and a boiling point of 290°C. It is slightly soluble in water but readily soluble in organic solvents such as benzene, acetone, and toluene. Its chemical structure consists of two phenol groups linked by a methylene bridge, providing it with unique stabilizing properties.

Applications

MBTS (DM) is primarily used as an antioxidant and stabilizer in the rubber and plastics industries. It provides excellent thermal stability and resistance to oxidative degradation, making it ideal for applications requiring long-term durability and performance.

Rubber Products: MBTS (DM) is used in the production of various rubber products, including tires, conveyor belts, and hoses, to enhance their resistance to thermal and oxidative degradation.

Plastics: It acts as a stabilizer in plastics such as polyethylene and polypropylene, preventing thermal and oxidative degradation during processing and use.

Adhesives and Sealants: MBTS (DM) is used to improve the stability and performance of adhesives and sealants, ensuring long-term durability and resistance to environmental factors.

Packaging and Storage

MBTS (DM) is typically packaged in 25 kg paper bags lined with plastic film or in kraft paper bags. It should be stored in a cool, dry place with good ventilation, avoiding direct sunlight and moisture. The product has a shelf life of one year when stored properly.

Safety and Handling

MBTS (DM) is classified as a hazardous substance with the following hazard statements:

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

MBTS (DM) is a versatile and high-performance antioxidant with a wide range of applications in the rubber and plastics industries. Its improved properties, such as delayed action and high anti-scorching quality, make it particularly suitable for products requiring high performance and durability. Proper handling and storage are essential to ensure its safe and effective use.