... :making sulphur dyestuff intermedia...Brand Name: KaiMeiLong sodium sulfideModel Number:1500ppm, 150ppm,80ppm,50ppm,30ppmColor: ... receiving advanced paymentSpecificationsSodium Sulphide1.60% in purity2.Sodium sulphide flakes3.Packing:25kg PP bag4.Fe: ... price, and we have large storage.1)Sodium sulfide yellow and red flakes2)Specifications 50ppm80ppm150ppm1500ppmNa2S60min60min60min60minNa2SO32.00max2 ...