Barium dihydroxide octahydrate
Barium hydroxide octahydrate
CAS: 12230-71-6
Molecular Formula: BaH18O10
Barium dihydroxide octahydrate - Names and Identifiers
Barium dihydroxide octahydrate - Physico-chemical Properties
| Molecular Formula | BaH18O10 |
| Molar Mass | 315.46 |
| Density | 2.18 |
| Melting Point | 78°C(lit.) |
| Boling Point | 780°C |
| Water Solubility | 56 g/L (15 ºC) |
| Solubility | 72g/l |
| Appearance | Solid |
| Specific Gravity | 2.18 |
| Color | White |
| Odor | Odorless |
| Exposure Limit | ACGIH: TWA 0.5 mg/m3NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 |
| Merck | 14,977 |
| PH | 14 (H2O, 20℃)(saturated aqueous solution) |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Stable. |
| Sensitive | Air Sensitive & Hygroscopic |
| Physical and Chemical Properties |
|
| Use | Used in chemical industry, light industry, medicine and other industries, mainly used in the manufacture of barium salt, oil industry as multi-efficiency additives |
Barium dihydroxide octahydrate - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R20/22 - Harmful by inhalation and if swallowed. R34 - Causes burns R20/21 - Harmful by inhalation and in contact with skin. |
| 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.) |
| UN IDs | UN 3262 8/PG 2 |
| WGK Germany | 1 |
| RTECS | CQ9200000 |
| FLUKA BRAND F CODES | 9-34 |
| TSCA | Yes |
| HS Code | 28164000 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 550 mg/kg |
Barium dihydroxide octahydrate - Upstream Downstream Industry
| Raw Materials | Barium chloride Sodium hydroxide |
| Downstream Products | Barium naphthenate barium oxalate Barium Chromate Barium carbonate Silver oxide 1,1-Cyclobutanedicarboxylatodiammineplatinum (II) |
Barium dihydroxide octahydrate - Nature
Open Data Verified Data
colorless transparent crystal or white crystalline cake. Melting point 78 ° C. ID 2.180. Soluble in water, methanol, ethanol-soluble, insoluble in acetone. Can quickly absorb carbon dioxide in the air to become barium carbonate. This product is not flammable.
Last Update：2024-01-02 23:10:35
Barium dihydroxide octahydrate - Preparation Method
Open Data Verified Data
The sodium hydroxide was dissolved in four times water and heated to boiling. Barium nitrate was added with stirring until all of the mixture was dissolved, and the mixture was allowed to stand and cooled to room temperature. The obtained crystals were washed, redissolved in boiling water, filtered, cooled to room temperature, and the crystals were filtered off with suction. The crystals were washed and dried to obtain a crude barium hydroxide. The obtained crude product was dissolved in water and added with an appropriate amount of hydrogen peroxide and magnesium sulfate to make it co-precipitated with iron, filtered and cooled to obtain pure barium hydroxide.
Last Update：2022-01-01 09:00:50
Barium dihydroxide octahydrate - Use
Open Data Verified Data
analysis reagent, used for precipitation separation of sulfate, chlorophyll determination and synthesis of barium salt.
Last Update：2022-01-01 09:00:51
Barium dihydroxide octahydrate - Safety
Open Data Verified Data
toxic; Intake of products Vomit, abdominal pain, Diarrhea and other symptoms, immediate treatment; Inhalation of products to stimulate the nasal cavity, bronchi, lungs and other mucous membranes. Staff should be well protected, if accidentally touch the skin and eyes, should be immediately washed with flowing water. Store in a cool, ventilated warehouse. Keep away from fire and heat source. Should be stored separately with acids, edible chemicals, avoid mixed storage.
Last Update：2022-01-01 09:00:51
Barium dihydroxide octahydrate - Reference Information
| pH range of acid-base indicator discoloration | 12.5 at 50g/l at 20°C |
| Use | used in chemical, light industry, pharmaceutical and other industries, mainly used in the manufacture of barium salt, as multi-efficiency additive in petroleum industry, etc. It is mainly used as multi-efficiency additive in petroleum industry. It is also used for refining barium-based greases and oils. Sugar beet, medicine is the raw material of plastic and rayon, can be used as a resin stabilizer. It is also used in organic synthesis and the manufacture of other barium salts, softening of water, as well as in the glass and enamel industry. used as stabilizer, rubber vulcanization catalyst, Rayon treatment agent, boiler hard water softener, ore flux, etc. used as hardener, preservative and hard water softener of synthetic rubber, refined animal and vegetable oil, etc. used in chemical, light industry, medicine and other industries, mainly used in the manufacture of barium salt, multi-efficiency additives in the petroleum industry. determination of carbon dioxide in the air, refined sugar and animal oil, boiler water cleaning agent. |
| production method | The barium sulfide method will be made by roasting barite, the concentration of the barium sulfide solution obtained by leaching was controlled at 14~16 ° bα, and the solution was clarified by standing. The clear solution is reacted with hydrochloric acid, and the resulting barium chloride solution is heated to 70-90 °c and subjected to metathesis reaction with excess caustic soda at 100-110 °c. After concentration, cooling crystallization, centrifugal separation and drying, the barium hydroxide octahydrate product was obtained. Its BaS + 2HCl → BaCl2 + H2S ↑ BaCl2 + 2NaOH + 8H2O → Ba(OH)2 · 8H2O + 2NaCl barium carbonate method barium carbonate reacts with hydrochloric acid, and the Ph of the reaction solution is controlled at 4-5, the concentration of 26~28 degrees B, the temperature is above 80 degrees Celsius. In order to avoid the loss of barium chloride, the double decomposition reaction was carried out by adding an excess of caustic soda (103% ~ L of the theoretical amount of 05%.28% ~ 30% NaOH). After sedimentation to remove iron, manganese, calcium and other box ions. The clear solution was cooled below 25 °c with constant stirring, crystallized, washed with cold water, centrifuged, and dried to obtain a barium hydroxide octahydrate finished product. Its BaCO3 + 2HCl → BaCl2 + CO2 ++ H2O BaCl2 + 2NaOH + 8H2O → Ba(OH)2 · 8H2O + 2NaCl barium chloride method directly reacts with caustic soda with barium chloride mother liquor as raw material, the crystals were then cooled and isolated by filtration to obtain the product. The BaCl2 + 2NaOH + 8H2O → Ba(OH)2 · 8H2O + 2NaCl Witherite method is used to pulverize the ore and then calcined, and the product is obtained by leaching, filtration, purification, crystallization, dehydration and drying. Its BaCO3 → BaO + CO2BaO + 9H2O → Ba(OH)2 · 8H2O |
Last Update：2024-04-10 22:29:15
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CAS: 12230-71-6
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Raw Materials for Barium dihydroxide octahydrate
Downstream Products for Barium dihydroxide octahydrate
Barium naphthenate
barium oxalate
Barium Chromate
Barium carbonate
Silver oxide
1,1-Cyclobutanedicarboxylatodiammineplatinum (II)
barium oxalate
Barium Chromate
Barium carbonate
Silver oxide
1,1-Cyclobutanedicarboxylatodiammineplatinum (II)