Ammonium Chloride A.R. (99.8%) is a high-purity white crystalline powder with a molecular weight of ~53.49 g/mol. It sublimes/decomposes on heating (no fixed boiling point) and has a melting point around 338°C. Form: Solid / Powder; Uses: analytical chemistry, buffer solutions, laboratory reagents, chemical analysis, and research applications. Available Quantities: 500 g, 5 kg, 25 kg (custom bulk packing available)