... SODAGrade :Food GradePurity: 99~100.5%Function: First, Used in food, medicine, movie producer, tanning, dressing, metallurgy, ... Also can be used for film production, tanning, mineral processing, smelting, metal heat treatment, fiber, rubber and ... tiny crystalls, nodorousand salty, easily soluble inwater, insoluble in alcohol, presenting slightly alkalinity, decomposed whenheating. Decomposed ...