Abstract: Ascorbyl Palmitate(AP) is safety, nutritious and efficiently antioxidant and emulsifier, it has characteristics of multifunctional and multipurpose. This research synthesized of AP with VC and by-product methyl palmitate from Chinese Vegetable Tallow biodiesel, also determined HLB value of AP. The results showed that synthetic method is simple and feasible, the indexs of AP are according with related national standard, its HLB value is about 8.4, so belongs to oil-water emulsifier.

Key words: methyl palitate, AP, antioxidant, emulsifier, HLB