... and oxygen.12.H2O2 27.5 % min or 50% min, SPECIFICATION: Specification27.5%FirstclassSecond classExcellent classH2O2 (m/m) ,≥27.527.527 ... .5H2SO4% (m/m) ,≤0.040.050.08Evaporation residue (m/m) ,%0.080.100.18Stability, %97.097.093.0 Specification50%FirstclassSecond classExcellent classH2O2 ... (m/m) ,≥50.050.050.0H2SO4% (m/m) , ≤0.040.060.12Evaporation residue (m/m) ,%0.080.120.20Stability, %97.097.093 ...