sodium sulphide

sodium sulphide
cas no.: 1313-82-2
molecular formula: Na2S
property: thin and small yellow flakes; large and thick yellow flakes; large and thick red flakes.
use: in the mining industry as floation agent ,the leather industry as depilating agent ,waste water treatment, soil remediation, pulp paper and so on.
specifications:

Na2S % 60.00 min
Na2CO3 % 2.00max
Water Insoluble % 0.05max
Fe % 0.0030max