Tocopherol refers to various vitamin E derivatives, fat-soluble substances obtained from vegetable oils. They are commonly referred to as "mixed tocopherols" because they contain all four forms of tocopherol. These mixed tocopherols help to support product/oil freshness and shelf life and are a good alternative to synthetic antioxidants. Our StoppOx® Toco 70 Soy is reddish brown and is extracted from GMO-free soybean oil. After extraction, the Tocopherol is purified and blended with sunflower oil, adjusting the Tocopherol content in the product to 70%. Our StoppOx® Toco 70 Soy can be stored for at least 36 months.