COBALT(II) BROMIDE HYDRATE
Synonym(s):Cobaltous bromide hydrate
- CAS NO.：85017-77-2
- Empirical Formula: Br2CoH2O
- Molecular Weight: 236.76
- MDL number: MFCD00150208
- EINECS: 678-761-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:12:42
What is COBALT(II) BROMIDE HYDRATE?
Chemical properties
Red violet crystal.
The Uses of COBALT(II) BROMIDE HYDRATE
Hygrometers, catalystsCobalt(II) bromide hydrate is mainly used as a catalyst in organic synthesis, like C-metal, C-heteroatom and C-C bond formations, addition to unsaturated bonds, cyclizations, polymerization, oxidations reductions and carbonylations. It reacts with ammonia to form coordination compound bromopentaamminecobalt(III) bromide. It reacts with triphenylphosphine and form complexes of cobalt(II) bromide, which used as a catalyst in organic synthesis.
Purification Methods
Crystallise it from water (1mL/g) by partial evaporation in a desiccator. The anhydrous salt is soluble in EtOH, Me2CO, MeOAc to form blue-coloured solutions. [Glemser in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1517 1965.]
Properties of COBALT(II) BROMIDE HYDRATE
| Melting point: | 47-48°C |
| Density | 2,462 g/cm3 |
| form | Crystals |
| color | Violet |
| Specific Gravity | ～2.462 |
| Water Solubility | Soluble in water. |
| Sensitive | Hygroscopic |
| Merck | 14,2435 |
| Exposure limits | ACGIH: TWA 0.02 mg/m3 |
| CAS DataBase Reference | 85017-77-2 |
Safety information for COBALT(II) BROMIDE HYDRATE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for COBALT(II) BROMIDE HYDRATE
| InChIKey | MOTZAWYGLXXRSO-UHFFFAOYSA-L |
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