Ascorbic acid/vc/vitamin c 1.BP/USP/FCCV/EP 2.ISO,GMP,FDA,HACCP, ... 3.25kgs/fiber drum or 25kgs/carton Ascorbic acid/vc/vitamin c1.BP/USP/FCCV/EP2. ISO,GMP,FDA,HACCP,HALAL ... maxIron2ppm maxArsenic3ppm maxCd1ppm maxLoss on Drying0.4% max (under 60°C temperature)Oxalic Acid0.2% maxSulphate Ash(Residue on Ignition)0 ... .5° [alpha] 20, D, 10% water solution Ascorbic acid/Vitamine C