bluish violet powder, uniform color, no agglometation, uncontaminated Public listed company welcome to ... , avoid acids and liquid ammonia PropertiesGrade AGrade BTest MethodAppearanceBluish violet powder, uniform color, no agglomeration, uncontaminatedVisual inspectionCo46.0 - 48.0%Complexometric ... Density0.40-0.60 g/cm3GB/T 1479.1-2011 High quality Co46%min/ cobalt carbonate/1.0-5.0micron