Used in determination of mercury.Melting Point: ~151°CClarity & Color:Alcohol solution: To pass testSolubility:85g in 100ml at 20°CAmmonium (NH4):To pass testIron (Fe):≤0.0005%Heavy Metals:≤0.0005%Sulfur Compounds (SO42-):≤0.005%Residue On Ignition:≤0.05%Titrable Acid:≤0.25 meq/gStorage and Stability:May be stored at RT. Stable for 6 months after receipt.