Calcium Ascorbate (VC-Ca) is widely used in pharmaceutical, food and feed industry. It can keep the original flavor of the food, maintain the activity of Vitamin C and supplement calcium (easily absorbed). Specifications: 1) Identification: positive reaction 2) Specific rotation: +95°~ +97° 3) Heavy metals: 10ppm max 4) Arsenic: 3ppm max 5) pH: 6.8 ~ 7.4 6) Loss on drying: 0.1% max 7) Assay: 98.0% ~ 101.0% 8) Residue on ignition: 30% ~ 33% 9) Oxalate: pass 10) Fluoride: 10ppm max 11) Organic volatile impurities: pass 12) Assay: 99.0% ~ 100.5% 13) Organic volatile impurities: pass 14) Appearance: White crystalline powder 15) DMO status: GMO free Packing: Net weight 25kg/carton boxes with PE liner Storage: store in a cool, dry, ventilated area Shelf life: 2 years in dry conditions after production