Important antioxidant in food. They can be deep color, natural flavor of foods and lengthen layin while does not have any poison. In food industry, they are used in meat product, fruits, vegetable, tin and jam. Also they are used in the beverage industry, such as beer, grape wine, soft drink, fruit tea and fruit juice. 1) Appearance: white crystalline pellet or powder 2) Content: 98.0% (min.) 3) Specific rotation: +95.5 +98.0 4) PH value: 5.5-8.0 5) Heavy metal (Pb): 0.001% (max.) 6) Lead: 0.0005% (max.) 7) Arsenic: 0.0003% (max.) 8) FCC IV standard Packing: In 25kg bag or 20kg carton