Barium chloride dihydrate
| Formula | BaCl2*2 H2O |
| Chemical formula | BaCl2*2 H2O |
| Density | 3.86 g/cm3 (20°C) |
| Molar mass | 244.28 g/mol |
| Bulk density | ~ 1200 – 1400 kg/m3 |
| EC index number | 056-004-00-8 |
| CAS number | 10326-27-9 |
| HS Code | 28273980 |
| EC number | 233-788-1 |
| Storage | Without limitation |
| SDS | available |
| RTECS | CQ8751000 |
| R phrase | R 20-25 |
| S phrase | S 45 |
| Odour | odourless |
| Form | solid |
| Color | white |
| p H | 5.2 – 8.2(50g/l 20°C ) |
| Solubility in water | 375 g/l (20°C) |
| Vapour pressure | low |
| Boiling point | 1560 °C (anhydrous ) |
| Melting point | 963 °C (anhydrous ) |
| Thermal decomposition | >100 °C |
| Assay | ≥ | 99 | % |
| Description | Conforms | ||
| Identification | Conforms | ||
| Solubility | Conforms | ||
| Heavy metals | ≤ | 0.001 | % |
| Fe | ≤ | 0.001 | % |
| Substance not precipitate by | ≤ | 0.1 | % |
| dilute sulfuric acid (as sulphat) |
Barium chloride dihydrate is a white crystalline solid that is odorless and highly soluble in water. It commonly appears as colorless or white crystals and is widely used in chemical analysis and industrial processes.
🏭⚗️ Production
Barium chloride dihydrate is typically prepared by reacting barium carbonate or barium sulfide with hydrochloric acid, followed by crystallization to obtain the dihydrate form. It can also be produced by the reaction of barium hydroxide with hydrochloric acid.
🔬 Properties
The chemical formula of barium chloride dihydrate is BaCl₂·2H₂O, and it has a molar mass of approximately 244.26 g/mol. It melts around 78 °C, where it loses water of crystallization and converts to the anhydrous form. It is highly soluble in water but insoluble in alcohol. The compound is toxic if ingested or inhaled in large quantities.
🧪 Applications
Barium chloride dihydrate is used extensively in laboratories for qualitative inorganic analysis, especially in testing for sulfate ions by precipitation of barium sulfate. It is also employed in the manufacture of pigments, in water treatment to remove sulfate ions, and in the production of other barium compounds.
⚠️ Safety
Barium chloride dihydrate is toxic and potentially harmful if swallowed or inhaled. It can cause irritation to the skin, eyes, and respiratory tract. Prolonged exposure may lead to serious health effects, including muscle weakness and cardiac problems. Proper personal protective equipment, such as gloves and goggles, and working in well-ventilated areas are essential for safe handling. It should be stored in a cool, dry place away from incompatible substances.
