22326-55-2
Barium hydroxide monohydrate
CAS: 22326-55-2
Molecular Formula: BaH4O3
22326-55-2 - Names and Identifiers
22326-55-2 - Physico-chemical Properties
| Molecular Formula | BaH4O3 |
| Molar Mass | 189.36 |
| Density | 3.743g/mLat 25°C(lit.) |
| Melting Point | 78°C(lit.) |
| Water Solubility | Soluble in water. |
| Appearance | Crystalline |
| Color | White |
| Exposure Limit | ACGIH: TWA 0.5 mg/m3NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 |
| Sensitive | Air Sensitive & Hygroscopic |
| Physical and Chemical Properties | See barium hydroxide octahydrate. |
22326-55-2 - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R20/22 - Harmful by inhalation and if swallowed. R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S28 - After contact with skin, wash immediately with plenty of soap-suds. |
| UN IDs | UN 3262 8/PG 3 |
| WGK Germany | 1 |
| RTECS | CQ9200000 |
| FLUKA BRAND F CODES | 3-9-34 |
| Hazard Class | 8 |
22326-55-2 - New process for preparation of barium hydroxide monohydrate by dehydration of barium hydroxide octahydrate
from Palm Bridge research
Application (patent) number:
CN87101197.2
application date:
1987-12-23
Public/Announcement Number:
CN1016412B
Public/announcement date:
1992.04.29
applicant (patent):
Nankai University
inventor:
Zhang , Chen Shengchang , envelope , Liu Zhanquan
National and provincial code:
CN120101
Abstract:
barium hydroxide octahydrate (Ba(OH)
)Last Update：2024-01-02 23:10:35
22326-55-2 - Study on preparation of barium hydroxide monohydrate by vacuum heating and dehydration
from VIP
Author:
Abstract:
Abstract:
Key words:
barium hydroxide; Barium hydroxide in water; Vacuum heating; dehydration
year:
1999
Last Update：2023-08-16 22:05:47
22326-55-2 - Preparation of barium hydroxide monohydrate from barium hydroxide octahydrate
from hownet
Author:
Abstract:
According to the reaction principle of barium hydroxide octahydrate dehydration to produce barium hydroxide monohydrate, the preparation process of barium hydroxide octahydrate was studied by vacuum heating dehydration process. The suitable technological conditions were found out through experiments. The process equipment, simple operation, conditions easy to control, especially to prevent product carbonation has more unique advantages.
Key words:
vacuum heating dehydration barium hydroxide monohydrate
DOI:
10.3969/j.issn.1008-858X.1999.02.010
cited:
year:
1999
Last Update：2023-08-16 22:05:47
22326-55-2 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| toxicity | see barium hydroxide octahydrate. |
| Use | See Barium Hydroxide Octahydrate. |
| production method | dehydration method barium hydroxide octahydrate prepared from barium-containing raw materials (barite or arsenite) is dehydrated under vacuum heating conditions with a vacuum degree of 73.3-93.3kPa and a temperature of 70-90 ℃ for a dehydration time of 60-90mim to obtain barium hydroxide monohydrate. The recrystallization method uses toxic heavy stone as raw material and mixes it with pulverized coal, and is calcined at a high temperature above 1350 ℃. The calcined clinker is placed in an extraction tank, and is soaked with water under stirring at 80~90 ℃. After 30 mim is leached, a small amount of zinc oxide is added for desulfurization, and then the proposed liquid is filtered, evaporated, concentrated, and cooled to normal temperature. The obtained barium hydroxide octahydrate is crystallized and separated to obtain granular barium hydroxide monohydrate. |
Last Update：2024-04-09 21:01:54
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