Butylated hydroxyanisoleA synthetic antioxidant that's used in many products, including food, cosmetics, and pharmaceuticals: 
Description: A white or slightly yellow waxy solid with a faint odor 
Uses: Prevents fats, oils, and shortenings from rancidity and oxidative deterioration 
Solubility: Freely soluble in alcohol and propylene glycol, but insoluble in water 
Toxicity: Can induce benign and malignant tumors in rats and hamsters, and is toxic to the reproductive system and embryo in rats