Tin (II) chloride ( tin dichloride, tin dichloride ) is a binary chemical compound of tin and chlorine with the formula Sn Cl 2 , hydrochloric acid salt of tin.
| Tin chloride | |
|---|---|
 | |
| Are common | |
| Systematic name | Tin (II) Chloride |
| Traditional names | tin chloride, tin dichloride |
| Chem. formula | Sncl 2 |
| Rat formula | Sncl 2 |
| Physical properties | |
| condition | solid |
| Molar mass | 189.60 g / mol |
| Density | 3.95 g / cm³ |
| Thermal properties | |
| T. melt. | 247 ° C |
| T. bale. | 623 ° C |
| Chemical properties | |
| Solubility in water | 83.9 g / 100 ml |
| Classification | |
| Reg. CAS number | |
| PubChem | |
| Reg. EINECS number | |
| Smiles | |
| Inchi | |
| Codex Alimentarius | |
| Chebi | |
| UN number | |
| ChemSpider | |
Under normal conditions, it is a white powder. Melts and boils without decomposition. When standing in air, it is gradually hydrolyzed by moisture and O 2 is oxidized. It dissolves well in a small amount of water ; when diluted, it precipitates. It forms crystalline hydrate SnCl 2 ∙ 2H 2 O, which has the structure [Sn (H 2 O) Cl 2 ] ∙ H 2 O (“tin salt”). Reacts with alkalis , ammonia hydrate . Strong reducing agent, weak oxidizing agent.
Content
Physical Properties
- Melting point 247 ° C [1] (crystalline hydrate 37.7 ° C)
- Boiling point 652 ° C.
Getting
- Dissolution of tin in hydrochloric acid [1] [2] ;
- Heating of tin in a stream of hydrogen chloride [1] .
Storage
In a cool dry place.
Preparation of a 10% solution: To 100 g of SnCl 2 · 2H 2 O add 100 ml of concentrated hydrochloric acid, dilute to 1 l with water and add a little tin.
Application
- In the food industry is registered as a food additive E512 .
- Used for mordant dyeing [1] .
- For chemical tinning of metals.
Notes
- ↑ 1 2 3 4 Remy G. Inorganic chemistry course. - M .: Publishing house of foreign literature, 1963. - S. 581.
- ↑ Glinka N. L. General chemistry. - 24. - L .: Chemistry, 1985. - S. 505-509.