... .50ppm,30ppm, Quick DetailsClassification:SulfideType:Sodium SulfideCAS No.:1313-82-2Other Names:sodium sulphideMF:Na2SEINECS No.:215-211-5Place of Origin: Tianjin ... ,80ppm,50ppm,30ppmColor:Yellow and redPacking:25kg bagsHazard Class No.:8Shape:FlakeUN No.:1849Molecular weight:78.03Packaging & DeliveryPackaging Detail:25kgs pp bagsDelivery ...