Sodium sulfite anhydrous AGR, 500 g

Appearance,Assay > 98%

insol. in water < 0.01%,Cl^-< 0.01%,Thiosulphate < 0.04%,Carbonates (Na₂CO₃) < 0.15%,As < 0.00004%,Ca < 0.005%,Cu < 0.0005%,Fe < 0.001%,Pb < 0.0005%,Zn < 0.001%