Re:DL-Tartaric acid Anhydrous food grade FCC IV / BP98 Appearance: white crystalline powder Assay: 99.50% min Heavy metal(pb): 0.001% max Chloride(CL): 0.01% max Arsenic: 0.0002% max Sulfate(SO4): 0.015% max Loss on drying: 0.5% max Sulfate ash: 0.1% max Easily oxidaction material:eligible Self life: one year