Sodium Metabisulfite | Q/S |
Sodium Metabisulfite ( Na2S2O5) content,% | ≥98.5 |
Iron (Fe) content,% | ≤0.0007 |
Water Insoluble Matter content,% | ≤0.002 |
Heavy Metal Content (calculated as Pb),% | ≤0.0005 |
Arsenic content (calculated as As),% | ≤0.0001 |
Clarity | clear |
PH Value | 4.0~4.6 |