... acid, dyes and pharmaceuticals, and as decoloring agent, defoaming agent, melting-facilitating agent, oxidant, metal cleaning agent etc.Specification:SpecificationFine GradeFirst GradeQualified GradeSodium Nitrate99.7pct ... .max0.10pct.max-Relax90pct.max - Package:plastic woven bag or kraft paper bag inner plastic bagWith net weight 25kg,50kg,1000kgOutput:10 ...