Stannous chloride dihydrate CAS 10025-69-1
Stannous chloride, also known as tin dichloride, exists in both anhydrous and hydrated forms. The anhydrous form is transparent and crystalline, soluble in water. It oxidizes in air to form insoluble chloride oxides. It hydrolyzes in water to form a precipitate of basic stannous chloride. When preparing a solution, stannous chloride dihydrate must be dissolved in concentrated hydrochloric acid and then diluted to inhibit hydrolysis. Since stannous chloride dihydrate is easily oxidized by air, adding metallic tin particles to the solution can prevent oxidation. The dihydrate forms colorless monoclinic or flaky crystals. Hydrated stannous chloride can be obtained by treating flaky tin with hydrochloric acid, followed by evaporation and crystallization.
|
Content ≥, % |
≥98.00 |
|
Sulfate |
≤0.10 |
|
Arsenic(As)% |
≤0.005 |
|
lron(Fe)% |
≤0.01 |
|
Lead(Pb)% |
≤0.04 |
|
Copper(Cu)% |
≤0.005 |
Stannous chloride dihydrate can be used as a reducing agent in the manufacture of dye intermediates. Stannous chloride dihydrate is a component of ultra-high-pressure lubricating oils. Stannous chloride dihydrate is used as a bleaching agent. It is used in the sensitization treatment of mercury plating in mirror making, resulting in a bright silver film and a strong bond between the mercury and the product. In the electroplating industry, it is used for tin plating and copper-tin plating of mechanical parts. Stannous chloride dihydrate is used for sensitization treatment during electroplating of ABS plastics to prevent the coating from falling off. It is also used in the synthesis of pharmaceuticals, as a catalyst for organic synthesis, and as an activator for the vulcanization of butyl rubber products. Stannous chloride dihydrate is a mordant in dyeing and a dye resist in the discharge process of printing. Stannous chloride dihydrate is a stabilizer in the spice industry. Stannous chloride dihydrate is also a food reducing agent and antioxidant, such as in canned asparagus and pineapple puree.
1. In terms of stability, the dihydrate is more stable than the anhydrous form, making stannous chloride dihydrate safer to store and transport.
2. Tin itself is abundant, the preparation process is mature, and the price is low, making it suitable for large-scale use. This is particularly important for industrial users.
3. Stannous chloride is a moderately strong reducing agent, suitable for specific reactions, such as the determination of mercury ions.
25kgs/drum, 9tons/20’container
25kgs/bag, 20tons/20’container
Stannous chloride dihydrate CAS 10025-69-1
Stannous chloride dihydrate CAS 10025-69-1
