Barium hydroxide Chemical Properties
- Melting point:
- >300 °C(lit.)
- Boiling point:
- decomposes at 1032 (calculated) [KNA91]
- 2.2 g/mL at 25 °C(lit.)
- Water Solubility
- Soluble in water.
- Air Sensitive & Hygroscopic
- Stable. Incompatible with acids, carbon dioxide, moisture.
- CAS DataBase Reference
- 17194-00-2(CAS DataBase Reference)
- NIST Chemistry Reference
- Barium dihydroxide(17194-00-2)
- EPA Substance Registry System
- Barium hydroxide (Ba(OH)2) (17194-00-2)
Barium hydroxide Usage And Synthesis
Barium hydroxide is a kind of barium base. It has many kinds of applications. It can be used as the precursor for the preparation of other barium compounds. Its monohydrate form can be used to dehydrate and remove sulfate in many products. In laboratory, it can be used in analytic chemistry for the titration assay of organic acid. In organic synthesis, it is a strong base used for the hydrolysis of esters and nitriles. It is also a useful catalyst of organic synthesis. Other applications also include acting as an interlayer between zinc oxide and a luminescent conjugated polymer for light-emitting diodes, extracting pure arabinoxylans from water-insoluble cell wall material of wheat flour, removing sulfate and metals from the water and acting as a selective precipitating agent for hemicelluloses.
Wu, Mingmei, et al. "Hydrothermal Synthesis of Tetragonal Barium Titanate from Barium Hydroxide and Titanium Dioxide under Moderate Conditions." Journal of the American Ceramic Society 82.11 (2010):3254-3256.
Meier, Hans, et al. "Barium Hydroxide as a Selective Precipitating Agent for Hemicelluloses." Acta Chemica Scandinavica 12.1(1958):144-146.
Gruppen, H., R. J. Hamer, and A. G. J. Voragen. "Barium hydroxide as a tool to extract pure arabinoxylans from water- insoluble cell wall material of wheat flour." Journal of Cereal Science 13.3(1991):275-290.
Li, Ping Lu, D. Kabra, and R. H. Friend. "Barium Hydroxide as an Interlayer Between Zinc Oxide and a Luminescent Conjugated Polymer for Light-Emitting Diodes." Advanced Functional Materials 22.19(2012):4165–4171.
Bologo, V., J. P. Maree, and F. Carlsson. "Application of magnesium hydroxide and barium hydroxide for the removal of metals and sulphate from mine water." Water Sa 38.1(2012):23-28.
Sinisterra, J. V., A. Fuentes, and J. M. Marinas. "Barium hydroxide as catalyst in organic reactions. 17. Interfacial solid- liquid Wittig-Horner reaction under sonochemical conditions." J.org.chem (1987).
Barium Hydroxide occurs as an anhydrate whose prismatic, colorless
crystals are very deliquescent. Barium hydroxide can
be prepared by dissolving barium oxide (BaO) in water:
It crystallizes as the octahydrate, which converts to the monohydrate upon heating in air. Barium oxide has been found to react with water vapor at temperatures from 1443 to 1593 K to form gaseous Ba(OH)2 according to the reaction:
A better method of preparation involves addition of NaOH to the nitrate. Since barium hydroxide is fairly soluble, it is necessary to evaporate the solution to crystallize Ba(OH)2·8H2O. Ethanol is added to aid in this crystallization. The crystals are washed in cold ethanol to remove sodium ions and then dried.
Barium hydroxide,Ba(OH)2·8H20, is a white crystalline powder, colorless solid composed of monoclinic crystals. It has a melting point of 78°C and is soluble in water and insoluble in acetone. It is used in the fusion of silicates and fat saponification.
Carbon dioxide absorbant.
Barium hydroxide is used in analytical chemistry to
titrate weak acids, particularly organic acids. It forms
clear aqueous solutions that are free from carbonate,
unlike those of the alkali hydroxides, since barium carbonate is insoluble in water. This allows the use of
indicators such as phenolphthalein or thymophthalein
(with alkaline color changes) without the risk of titration
errors due to the presence of weakly basic CO32- ions.Barium hydroxide is used in organic synthesis as
a strong base, for example for the hydrolysis of esters
and nitriles.It has been used to hydrolyze one of the two equivalent
ester groups in dimethyl endecanedioate. It is also
used in the preparation of cyclopentanone, diacetone
alcohol and d-Gluonic g-lactone.
Barium hydroxide is used as an additive in thermoplastics (such as phenolic resins), rayon and PVC stabilizers to improve plastic properties. This material is used as a general-purpose additive for lubricants and greases. Other industrial applications for barium hydroxide include sugar fabrication, manufacturing soaps, fat saponification, fusing of silicates and chemical synthesis of other barium compounds and organic compounds.
Barium hydroxide is offered for sale both as the octahydrate and the monohydrate. It is available in large quantities commercially
Barium hydroxide Preparation Products And Raw materials
- Barium nitrate
- Barium chloride
- BARIUM METHACRYLATE
- BARIUM LACTATE
- BARIUM CYCLOHEXANEBUTYRATE
- BARIUM LAURATE
- OXALOSUCCINIC ACID BARIUM SALT
- malonic acid, barium salt
- Barium hydroxide
- Barium sulfate
- BARIUM HYDROXIDE, 8-HYDRATE,BARIUM HYDROXIDE OCTAHYDRATE,BARIUM HYDROXIDE OCTAHYDRATE 98+% A.C&,BARIUM HYDROXIDE OCTAHYDRATE, ACS, CRYST ALLIZED,BARIUM HYDROXIDE OCTAHYDRATE ACSREAGENT,BARIUM HYDROXIDE OCTAHYDRATE, CRYSTALLIZ ED,BARIUM HYDROXIDE OCTAHYDRATE, 98+%, A.C. S. REAGENT,BARIUM HYDROXIDE-8-HYDRATE EXTRA PURE,BARIUM HYDROXIDE OCTAHYDRATE GR 99+%,Barium hydroxide octahydrate (Electronic chemical kind),Barium Hydroxide, Octahydrate, Reagent,barium hydroxide octanhydarate,Barium hydroxid
- BARIUM OXIDE
- Aluminum hydroxide
- Barium stearate
- Ammonium hydroxide
- Calcium hydroxide
- Sodium hydroxide
Barium hydroxide SupplierMore
- 010-82848833- ;010-82848833-
- 400-610-6006; 021-67582000
- 13651141086; 86(10)60275028、60275820