To be efficient, therefore, a propellant should have a large heat of combustion to yield high temperatures, and should produce combustion products containing simple, light molecules embodying such elements as hydrogen (the lightest), carbon, oxygen, fluorine, and the lighter metals (aluminum, beryllium, lithium).
Vitamin A - Retinyl Palmitate/ Retinol. Vitamin A is a fat soluble vitamin that is stored in our liver. It contributes to normal growth and development while keeping our eyes, skin and immune system healthy. Vitamin A plays a key role in maintaining health.
However, for the manufacture and addition of preformed vitamin A and provitamin A carotenoids to dietary supplements and foods, as well as for labeling the vitamin A content of these products, the U.S. Food and Drug Administration (FDA) mandates that older conversion factors published by the FNB in 1968 be used: 1 IU = 0.3 mcg as retinol = 0.6 mcg as beta-carotene .