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                  Product

                  Industrial sulphuric acid

                  industrial sulphuric acid
                  This standard is for industrial sulphuric acid. 
                  Molecular formula : H2SO4
                  Relative density :98.08
                  Item Index 
                  Special sulfuric acid Concentrated sulfuric acid 
                  Superior grade Top grade Qualified Superior grade Top grade Qualified 
                  sulfuric acid(H2SO4) content: % ≥ 92.5 or 98.0 92.5 or 98.0 92.5 or 98.0 92.5 or 98.0
                  free sulfur trioxide (SO3)Content, % ≥ 20.0 20.0 20.0
                  ash content % ≤ 0.02 0.03 0.03 0.10 0.03 0.03 0.10
                  ferrum(Fe) content, % ≤ 0.005 0.010 0.010 0.010 0.010 0.030
                  arsenic(As) content, % ≤ 8*10-5 0.0001 0.005 0.0001 0.0001
                  lead (Pb) content, % ≤ 0.001 0.01 0.01
                  mercury (Hg) content, % ≤ 0.0005
                  nitric oxide(in N) conten, % ≤ 0.0001
                  sulfur dioxide(SO2) conten, % ≤ 0.01
                  chlorine (Cl) content , % ≤ 0.001
                  transparency, mm ≥ 160 50 50
                  chromaticity ml ≤ 1.0 2.0 2.0


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