Tin(II) chloride dihydrate (SnCl2•2H2O)-Crystalline

Characteristic

 

Tin(II) chloride, also known as stannous chloride, is a white crystalline solid with the formula SnCl₂. It forms a stable dihydrate, but aqueous solutions tend to undergo hydrolysis, particularly if hot.

Chemical formula:SnCl₂

Molar mass：189.60 g/mol (anhydrous);225.63 g/mol (dihydrate)

Appearance：White crystalline solid

Odor：odorless

Density：3.95 g/cm³ (anhydrous);2.71 g/cm³ (dihydrate)

Melting point：247 °C (477 °F; 520 K) (anhydrous);37.7 °C (dihydrate)

Boiling point：623 °C (1,153 °F; 896 K)(decomposes)

Solubility in water：83.9 g/100 ml (0 °C)

Hydrolyses in hot water

Solubility：soluble in ethanol, acetone, ether, Tetrahydrofuran;insoluble in xylene

Magnetic susceptibility (χ)：−69.0·10⁻⁶ cm³/mol

Crystal structure：Layer structure

 

Application

 

Tin(II) chloride is used as a sensitizing agent in preparing glass and plastic for metalizing. It serves as a potent reducing agent. Other uses of stannous chloride are tin electroplating baths, corrosion inhibitors, polymers, thermoplastic elastomers, soldering flux, antioxidant, tanning agent and pharmaceuticals.