Butylated hydroxytoluene

Basic Information

• Chemical Name: Butylated hydroxytoluene.
• CAS Number: 128-37-0.
• Molecular Formula: C15H24O.
• Molecular Weight: Approximately 220.35~220.36 (slight variations from different sources).
• Appearance: White crystals or crystalline powder, odorless and tasteless.
• Melting Point: 69.5~71.5°C (slight variations from different sources).
• Boiling Point: 265°C.
• Density: 1.048.
• Flash Point: 127°C.

Physical and Chemical Properties

• Solubility: Insoluble in water and dilute alkali, but easily soluble in organic solvents such as benzene, toluene, ethanol, gasoline, and food oils.
• Stability: Relatively stable to heat, volatile with water vapor when heated, and does not develop color with metal ions, especially iron ions.

Antioxidant Properties

BHT Butylated hydroxytoluene exhibits strong antioxidant properties. It can react with chain-growing radicals in autoxidation, eliminating radicals and thereby interrupting the chain reaction. During the antioxidant process, it can act as both a hydrogen donor and a radical scavenger. As a food antioxidant, Butylated hydroxytoluene can delay the rancidity of food and extend its shelf life.

1. Food Industry: BHT Butylated hydroxytoluene is widely used in fats, oils, emulsified fat products, fats and oils with little or no water content, dried vegetables, roasted nuts and seeds, canned nuts and seeds, chewing gum, fried flour products, ready-to-eat cereals, instant rice and noodle products, biscuits, preserved meat products, aquatic products, puffed food, and other foods. 
2. Polymer Materials: BHT Butylated hydroxytoluene serves as a stabilizer for synthetic rubbers (such as styrene-butadiene, nitrile, polyurethane, and polybutadiene), polyethylene, polyvinyl chloride, and other polymer materials, inhibiting or delaying their oxidative degradation and extending their service life.
3. Lubricants and Fuel Oils: BHT Butylated hydroxytoluene is also used to prevent the increase in acid value or viscosity of lubricants and fuel oils, maintaining their performance stability.