Stannous chloride dihydrate CAS#10025-69-1
Excellent Reducing Performance：Stannous chloride is a strong and effective reducing agent, making it highly valuable in chemical synthesis, analytical chemistry, and industrial processes that require controlled reduction reactions.
Versatile Industrial Applications：It is widely used across multiple industries, including chemical manufacturing, electroplating (tin plating), textiles (as a mordant), and laboratory analysis, demonstrating strong adaptability and multifunctionality.
Good Solubility and Reactivity Control：Stannous chloride is soluble in water and hydrochloric acid, allowing flexible preparation of solutions. With proper handling (acidic medium or metallic tin addition), its hydrolysis and oxidation can be effectively controlled.
Multiple Forms to Suit Different Needs：Available in both anhydrous and hydrated forms, stannous chloride can meet diverse application requirements, offering convenience for high-temperature processes, aqueous systems, and precision industrial use.
Products Description of Stannous Chloride Dihydrate CAS#10025-69-1
Stannous chloride (SnCl₂), also known as tin dichloride, exists in both anhydrous and hydrated forms. The anhydrous form appears as transparent crystals with a melting point of 246 ℃, a boiling point of 652 ℃, and a relative density of 3.95. It is soluble in water but readily oxidizes in air to form insoluble chloride oxides. In aqueous solution, it tends to hydrolyze, producing basic stannous chloride [Sn(OH)Cl] precipitate. To suppress hydrolysis, it should first be dissolved in concentrated hydrochloric acid and then diluted. As it is easily oxidized by air, the addition of metallic tin particles can help prevent oxidation.
Stannous chloride dihydrate (SnCl₂·2H₂O) is a colorless monoclinic or flaky crystalline solid with a melting point of 37.7 ℃ and a relative density of 2.71. When heated to 100 ℃, it loses its water of crystallization. Stannous chloride is widely used in the chemical industry as a reducing agent, mordant, decolorizing agent, and analytical reagent, and it is also applied in electroplating for tin plating.
Anhydrous stannous chloride is produced by the direct reaction of molten tin with chlorine, while the hydrated form is prepared by reacting flake tin with hydrochloric acid, followed by evaporation and crystallization.
Stannous chloride dihydrate Chemical Properties
| Melting point | 37-38 °C (dec.)(lit.) |
| Boiling point | 652 °C(lit.) |
| density | 2.71 |
| storage temp. | Store at +15°C to +25°C. |
| solubility | hydrochloric acid |
| form | Solid |
| color | White or colorless |
| Specific Gravity | 2.71 |
| PH | 1-2 (100g/l, H2O, 20℃) |
| Water Solubility | 1187 g/L (20 ºC) |
| Sensitive | Air Sensitive |
| Merck | 148,783 |
| Exposure limits | ACGIH: TWA 2 mg/m3 |
| NIOSH: IDLH 100 mg/m3; TWA 2 mg/m3 | |
| Stability: | Stable. Incompatible with strong oxidizing agents, alkali metals, ammonia, alcohols, alkalies, nitrates, boron trifluoride, boron trichloride, carbides. |
| InChIKey | AXZWODMDQAVCJE-UHFFFAOYSA-L |
| CAS DataBase Reference | 10025-69-1(CAS DataBase Reference) |
| EPA Substance Registry System | Tin chloride (SnCl2), dihydrate (10025-69-1) |
Safety Information
| Hazard Codes | C,N |
| Risk Statements | 22-34-68-50/53-48/22-43-20-63 |
| Safety Statements | 26-36/37/39-45-61-60 |
| RIDADR | UN 3260 8/PG 3 |
| WGK Germany | 1 |
| RTECS | XP8850000 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | II |
| HS Code | 28273910 |
| Toxicity | LD50 orally in Rabbit: 700 mg/kg |
Product Application of Stannous Chloride Dihydrate CAS#10025-69-1
Stannous chloride dihydrate is widely applied as a reducing agent in the production of dye intermediates and is also a component of ultra-high-pressure lubricating oils. It serves as a bleaching agent and is used in mirror manufacturing for mercury plating sensitization, where it helps form a bright silver film with strong mercury adhesion.
In the electroplating industry, it is used for tin plating and copper–tin plating of mechanical components, as well as for sensitizing ABS plastics prior to electroplating to improve coating adhesion and prevent peeling.
In addition, it is utilized in pharmaceutical synthesis, as a catalyst in organic reactions, and as an activator in the vulcanization of butyl rubber products. It functions as a mordant in dyeing processes and as a dye resist in discharge printing. The compound is also used as a stabilizer in the flavor and fragrance industry, and as a food-grade reducing agent and antioxidant, such as in canned asparagus and pineapple juice.
