Our company can supply quality good grade Sodium Nitrate Product: Sodium Nitrate Assay99.3% minMoisture 1.5% max.Water Insoluble0.03% max.Sodium nitrites 0.01% max.Chloride 0.40% max.Carbonate0.10% max.Iron 0.005% max.Packing: 25/50 kgs net bag. Pls contact us if you are interested in it.