Solubility:32g in 100ml water at 20°CMelting Point:~334°CpH:4.5-8.5 (5% solution at 25°C)Insoluble Material:≤0.0005%Heavy Metals:≤0.0005% (as Pb)Chloride (Cl-):≤ 0.002%Sulfate (SO42-):≤ 0.003%Phosphate (PO43-):≤0.0005%Iodate (IO3-):≤0.0005%Nitrite (NO2-):≤ 0.001%Iron (Fe):≤ 0.0003%Sodium (Na):≤ 0.005%Calcium (Ca):≤ 0.005%Magnesium (Mg):≤ 0.002%Storage and Stability:Store at RT. Stable for 12 months after receipt.Meets or exceeds ACS specifications