Properties: Not soluble in water, diethyl ether, soluble in alcohol; inflammable and toxic. Specifications: No. Items index 1 appearance white crystalline powder 2 assay %í² 99.0 3 melting point ocí² 136 4 o-toluenesulfonamide %ín 0.2 5 ph value 6.5-7.0 6 heavy metal(ppm) 10 7 cl (ppm) 50 8 so4 (ppm) 35 9 fe (ppm) 10 10 loss on drying %ín 0.2 11 ash %ín 0.05 12 color (apha) 20 Packing:deep-colored plastic drum, plastic-lined, 25kg/50kg/150kg net
