Chemical name: Barium Hydroxide Monohydrate
CAS: 22326-55-2
EINECS: 241-234-5
Molecular formula: Ba(OH)2·H2O
Molecular weight: 189.356
Specification
| Item | Standard |
| Assay [Ba(OH)2•H2O] | 99% min |
| Barium carbonate(BaCO3) | 0.5% max |
| Ferric（Fe） | 15 ppm max |
| Chloride (Cl) | 0.10% max |
Usage:
Barium hydroxide monohydrate [Ba(OH)₂·H₂O] is a strong inorganic base (pH ~13 in solution) with a wide range of industrial and laboratory applications.
Key industrial applications:
- Organic synthesis: Base catalyst for aldol condensations, ester saponification, and preparation of barium salts of organic acids
- Sugar refining: Removes sulphate impurities from sugar processing solutions via barium sulphate precipitation
- Water softening: Removes sulphate and carbonate hardness from industrial process water
- CO₂ absorption: Used in laboratory CO₂ scrubbers and for preparation of carbonate-free base solutions in analytical chemistry
- Lubricant grease: Precursor to barium-containing grease thickeners used in high-temperature applications
- Ceramics and glass: Component in specialty glass formulations and ceramic glaze production
Safety note: Barium hydroxide is corrosive to skin and eyes, and toxic if ingested. Store away from acids and CO₂-containing atmospheres to prevent conversion to barium carbonate. Full MSDS provided with each shipment.
Packing: 25 kg net per woven bag or drum; custom packaging available.
Storage: Store in a cool, dry place. Keep containers tightly closed. Minimum shelf life: 2 years under proper storage conditions.
Related Products
Interested in Barium Hydroxide Monohydrate?
Contact us for pricing, availability, certificates (COA/MSDS), and shipping terms. Our team responds within 24 hours.
Applications
Barium hydroxide monohydrate is a versatile strong base with numerous industrial applications. In organic synthesis, it is used as a catalyst for the Knoevenagel condensation and aldol reactions, offering advantages over conventional acid or base catalysts. The sugar refining industry uses it to clarify beet sugar juice by precipitating calcium and other impurities. In CO₂ absorption systems, barium hydroxide reacts with carbon dioxide to form barium carbonate, making it useful in laboratory CO₂ scrubbers and in the production of barium carbonate pigments. Electroplating operations use it to prepare surface treatments that improve adhesion. In the petroleum industry, it serves as a lubricating grease thickener. Analytical chemistry applications include its use as a primary standard for acid-base titrations. Barium hydroxide is also used in the manufacture of barium salts of various organic acids (stearates, oleates) for use as PVC heat stabilisers. As with all soluble barium compounds, it requires careful handling due to toxicity of the Ba²⁺ ion.
Further reading: Barium Chloride vs Barium Hydroxide: Industrial Applications Guide