Butylated Hydroxytoluene丨CAS 128-37-0

Butylated Hydroxytoluene丨CAS 128-37-0, is a synthetic antioxidant widely used to prevent oxidation in a variety of products. It is a white crystalline solid with the chemical formula C15H24O. BHT functions by stabilizing free radicals, which helps extend the shelf life of products such as foods, cosmetics, pharmaceuticals, plastics, and fuels. Despite some debate about its safety in high doses, BHT remains approved and widely used in many industries under regulated limits.

1. Food Industry
● Used as a food preservative to prevent oxidation of fats and oils, which causes rancidity.
● Found in snack foods, cereals, baked goods, chewing gum, and packaged fats.
● Commonly labeled under the food additive code E321.
● Often used in combination with BHA (Butylated Hydroxyanisole) for synergistic effects.
2. Cosmetics and Personal Care
● Acts as an antioxidant stabilizer in formulations such as:
o Lipsticks
o Lotions
o Creams
o Hair products
● Prevents degradation of sensitive ingredients, especially in oil-based and fragrance-rich formulations.
3. Pharmaceuticals
● BHT is used to stabilize active ingredients in drugs, especially those prone to oxidation.
● Included in capsule shells, ointments, and oil-based drug formulations.
● Helps ensure product efficacy and shelf-life stability.
4. Plastics and Polymers
● Serves as an antioxidant additive in:
o Polyethylene
o Polypropylene
o Rubber
● Protects polymers from thermal and oxidative degradation, especially during processing or long-term exposure to air and light.
5. Fuel and Lubricants
● Used as a stabilizer in gasoline, jet fuel, and diesel, helping prevent gum formation and oxidation.
● Enhances fuel storage life and engine cleanliness.
6. Animal Feed
● Added to pet food and livestock feed to prevent spoilage of fats.
● Helps preserve vitamin content and feed quality over time.
7. Laboratory Reagent
● Occasionally used in biochemical and chemical research to inhibit autoxidation in organic reactions.

1. Effective Antioxidant
● Butylated Hydroxytoluene丨CAS 128-37-0 is a potent free radical scavenger, interrupting oxidation chains by donating a hydrogen atom.
● Extends the shelf life and stability of both edible and non-edible products.
2. Wide Compatibility
● Compatible with a wide range of materials including oils, fats, resins, rubbers, and synthetic polymers.
● Remains effective under heat and UV exposure, making it ideal for industrial and cosmetic uses.
3. Cost-Effective
● BHT offers a low-cost, high-impact method for oxidative preservation compared to natural antioxidants like vitamin E or rosemary extract.
4. Regulatory Approval
● Approved by regulatory agencies like the FDA, EFSA, and WHO for use in specific applications within defined limits.
● When used according to guidelines, BHT is considered safe and effective.

Butylated Hydroxytoluene丨CAS 128-37-0 is a versatile and highly effective antioxidant with broad applications across food preservation, personal care, pharmaceuticals, plastics, and fuels. Its ability to inhibit oxidative degradation ensures the stability and longevity of diverse products. While it must be used within regulated safety limits, BHT remains a cornerstone antioxidant in both commercial and industrial applications.