Erythritol chemical name of l, 2,3,4 - Ding tetraol, English name of Erythritol, also known as l ,2,3,4-Butanetetraol, molecular formula is C4H10O4, molecular weight 122.12, melting point 118 -122 , boiling point 329-331 , Erythritol appearance is white crystal powder, sweet and easy to crystallization, there are cool feeling, the relative sweetness of about 0.7, the low-calorie, good biological tolerance.