Butylated Hydroxytoluene (BHT)

Product Name: BHT
INCI Name: Butylated Hydroxytoluene
Chemical Name: 2,6-Di-tert-butyl-4-methylphenol
CAS Number: 128-37-0
Molecular Formula: C₁₅H₂₄O
Molecular Weight: 220.35 g/mol
Chemical Class: Phenolic antioxidant

Description

Butylated Hydroxytoluene (BHT) is a synthetic antioxidant widely used in cosmetic, pharmaceutical, food, and industrial formulations. It functions by inhibiting oxidation, thereby protecting oils, fats, fragrances, and other oxidation-sensitive ingredients from degradation. This helps maintain product quality, stability, and shelf life.

BHT appears as a white to pale yellow crystalline solid with a faint characteristic odor. It is particularly effective at low concentrations and is often used alongside other antioxidants for synergistic protection.

Physical & Chemical Properties

• Appearance: White to off-white crystalline powder

• Odor: Slight, characteristic

• Solubility:

  • Soluble in oils, fats, ethanol, and organic solvents

  • Insoluble in water

• Melting Point: ~69–71 °C

• Stability: Highly stable under normal storage conditions

Functional Benefits

• Prevents oxidation and rancidity of oils and fats

• Protects fragrances, vitamins, and actives from degradation

• Extends shelf life of finished products

• Effective at very low usage levels

• Compatible with a wide range of cosmetic and food ingredients

Typical Usage Levels

• Cosmetics & Personal Care: 0.01 – 0.1%

• Food Applications: As permitted by local regulations (often ≤0.02%)

Applications

• Skin care creams and lotions

• Lipsticks, balms, and makeup products

• Hair care products

• Fragrance compositions

• Food and pharmaceutical preparations

Safety & Regulatory Notes

• Approved for use in cosmetics and foods in many countries within regulated concentration limits

• Must be declared on ingredient labels as Butylated Hydroxytoluene

• Usage should comply with local cosmetic and food regulations

Storage & Handling

• Store in a cool, dry place

• Keep container tightly closed

• Protect from heat and direct sunlight