::  Stannous Fluoroborate Stannous Fluoroborate 1. Molecular formula:Sn(BF4)2 2. Molecular weight:292.30 3. Property:Colorless and transparent liquid;relative density:1.6;aqueous solution containing a certain amount of free acid;freely oxidable if exposure to air for a long period;easily decomposable when heated or in water. 4. Usage:High-speed stannising and electroplating bath of pewter;highly purified product for the electroplating of printed circuits and electronic components. 5. 5. Specificatios Impurity level:   Impurity name Index Sn(BF4)2 ≥45% Sn+2 ≥20% H3BO3 ≤3% HBF4 ≤2% Cl ≤0.005% SO4 ≤0.05% Sn+4 ≤0.8% Fe ≤0.05% 6. Packing:20kg plastic drum