| Lead(II) bromide | |
|---|---|
|
Lead(II) bromide |
|
|
Other names
Lead dibromide |
|
| Identifiers | |
| CAS number | 10031-22-8 |
| Properties | |
| Molecular formula | PbBr2 |
| Molar mass | 367.01 g/mol |
| Appearance | white powder |
| Density | 6.66 g/cm3 [1] |
| Melting point |
373 °C |
| Boiling point |
916 °C (vaporizes) |
| Solubility in water | 0.455 g/100 mL (0 °C) 0.844 g/100 mL (20 °C) 4.41 g/100 mL (100 °C) |
| Solubility product, Ksp | 6.60 x 10-6 |
| Solubility | insoluble in alcohol; soluble in ammonia, alkali, KBr, NaBr |
| Hazards | |
| EU Index | 082-001-00-6 |
| EU classification | Repr. Cat. 1/3 Harmful (Xn) Dangerous for the environment (N) |
| R-phrases | R61, R20/22, R33, R62, R50/53 |
| S-phrases | S53, S45, S60, S61 |
| NFPA 704 |
0
3
0
|
| Related compounds | |
| Other anions | Lead(II) fluoride, Lead(II) chloride, Lead(II) iodide |
| Other cations | Thallium(I) bromide, Tin(II) bromide Bismuth bromide |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
|
| Infobox references | |
Lead(II) bromide is the stable salt of lead and hydrobromic acid. It is typically formed by precipitation from lead(II) nitrate by the addition of a water-soluble bromide. As a chemical compound containing lead, it is categorized as probably carcinogenic to humans (Category 2A), by the International Agency for Research on Cancer (IARC); meaning it is toxic. At room temperature it is a white powder. On strong heating, it melts at 367°C to form a colourless liquid that is a weak electrical conductor. The powder is weakly soluble in water (0.455g dissolves in 100g of water at 0°C). However, its solubility rises at higher temperatures and it is about ten times more soluble in boiling water. [2]
|
|||||