... :NH3FMolecular Weight:37.04 ItemIndexABCAmmonium Fluoride(NH3F) content(purity), % ≥98.0097.0095.00Residue content, % ≤0.050.050.10Sulphate(H2SO4)content, % ≤0.100.150. ... 15Ammonium Fluorosilicate[(NH4)2SiF6]content, % ≤0.500.501.00 ... polythene plastic sack. Net weight is 25kg, per sack. Ammonium Fluoride 97%