Specifications: Fe Na2S Water insoluble Na2CO3 Na2SO3 Na2S2O3 Color 15ppm Max 60%min. 0.05%max 1.80%max 1.80%Max 2.00%max. Yellow 20ppm Max 60%min. 0.10% max 1.80%max 1.80%Max 2.00%max. Yellow 30ppm Max 60%min. 0.18%max 1.80%max 1.80%max 2.00%max. Yellow 50ppm Max 60%min 0.18%max 1.80%max 2.00%max 2.00%max Yellow 80ppm Max 60%min 0.20%max 2.00%max 2.00%max 2.00%max Yellow 150ppm Max 60%min 0.30%max 3.00%max 2.00%max 2.00%max orange 1500ppm Max 60%min 0.40%max 5.00%max 2.00%max 2.00%max Red. Outer packing: 25kgs/bag or 150kgs/drum.