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Characteristics Requirements as per IS 266:1993 TTPL’s H2SO4
Total Acidity (As H2SO4)%min 98.0 98.5
Residue on ignition % max 0.2 0.0013
Iron(Fe) % max 0.05 0.00075
Lead(Pb) % max 0.005 0.00025
Arsenic(As) % max 0.004 0.000005