Pyrazine-2,5-Dicarboxylic acid is a light yellow solid powder,The main content of the product is more than 98%, CAS number: 122-05-4, molecular formula: C6H4N2O4, molecular weight: 168.107, density is 1.665g/cm3, flash point, 236 °C, mainly used as flavors and fragrances additives. Packing specification is 25kg cardboard barrels.