BaBr2
Barium dibromide
CAS: 10553-31-8
Molecular Formula: BaBr2
BaBr2 - Names and Identifiers
| Name | Barium dibromide |
| Synonyms | BaBr2 Barium bromide BARIUM BROMIDE Barium dibromide BARIUM (II) BROMIDE Barium bromide (BaBr2) |
| CAS | 10553-31-8 |
| EINECS | 234-140-0 |
| InChI | InChI=1/Ba.2BrH/h;2*1H/q+2;;/p-2 |
BaBr2 - Physico-chemical Properties
| Molecular Formula | BaBr2 |
| Molar Mass | 297.14 |
| Density | 4,781 g/cm3 |
| Melting Point | 850 °C |
| Boling Point | 1835°C |
| Water Solubility | Soluble in water |
| Vapor Presure | 20200mmHg at 25°C |
| Appearance | beads |
| Specific Gravity | 4.781 |
| Color | White |
| Exposure Limit | ACGIH: TWA 0.5 mg/m3NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 |
| Merck | 14,968 |
| Stability | Stable. |
| Sensitive | Hygroscopic |
| Use | Used as an analytical reagent and also for the preparation of bromide |
BaBr2 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 20/22 - Harmful by inhalation and if swallowed. |
| Safety Description | 28 - After contact with skin, wash immediately with plenty of soap-suds. |
| UN IDs | UN 1564 6.1/PG 2 |
| WGK Germany | 1 |
| TSCA | Yes |
| HS Code | 28275900 |
| Hazard Class | 6.1 |
| Packing Group | III |
BaBr2 - Reference Information
Open Data Unverified Data
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| raw material for preparation of bromide | barium bromide has Chemical formula BaBr2, molecular weight of 297.14, and is a colorless crystal. Relative density 4.78(24/4 ℃), melting point 847 ℃, soluble in water, soluble in methanol, ethanol, insoluble in ethyl acetate, acetone and dioxane. Dihydrate is a colorless monoclinic crystal with a relative density of 3.58(24/4 ℃), a refractive index of 1.713, a loss of one minute of water at 75 ℃ and an anhydrous salt at 120 ℃. Both are toxic. Preparation: by the interaction of barium sulfide and hydrobromic acid prepared. Purposes: for the analysis of reagents and the preparation of other bromides of raw materials. |
| solubility in water (g/100ml) | grams dissolved per 100ml of water at different temperatures (℃): 98g/0 ℃;101g/10 ℃;104g/20 ℃;109g/30 ℃;114g/40 ℃ 123g/60 ℃;135g/80 ℃;149g/100 ℃ |
| Use | as an analytical reagent, also for the preparation of bromide |
| production method | 22ml of 47% hydrobromic acid was diluted with the same volume of water, 20g (about 0.1mol) of purified barium carbonate was added slowly with stirring, and carbon dioxide was evolved while forming a barium bromide solution. Insoluble impurities were filtered off, and the filtrate was heated on a water bath, concentrated to 1/3 of the original volume, left to cool, and crystals were precipitated. The product was filtered through a glass filter, washed successively with water and ethanol, and dried in a vacuum dryer. The product was barium bromide dihydrate. The yield was 85%. If the mother liquor is further concentrated, the product is still precipitated. If necessary, it can be purified by recrystallization. Anhydrous barium bromide can be obtained by heating barium bromide dihydrate to 150-200 °c for dehydration. |
Last Update：2024-04-09 19:43:38
