Formula:

Na₂S.xH₂O(x=2 – 9)

M.W.:    

78.04 (Dry Bases)

Appearance:

Pink; brownish red; or light yellow color flakes or solids.

Specifications: 

            Superior Grade Standard     First Grade Standard

Na₂S:             60% min                     60% min

Na₂SO₃:            2% max                     2% max

Na₂S₂O₃:           2% max  cc                  2% max

Na₂CO₃:           3% max                       5% max

Fe:              0.002% max;                0.003% max;

Water Insoluble:  0.2% max                   0.4% max

Package: 

in 25kg net pp woven bags with double PE or PP liner; or in 150kg net iron drums.