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Barium hydroxide ( Ba(OH)2 ) - 10g
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Description
Barium Hydroxide
Other Names: Baryta, Caustic Baryta
Chemical Formula: Ba(OH)₂
Molar Mass: 171.34 g/mol
CAS Number: 17194-00-2 (anhydrous) / 12230-71-6 (octahydrate)
Appearance: White crystalline solid (anhydrous or often as colorless crystals in hydrated form)
Odor: Odorless
Physical and Chemical Properties
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Form: Usually handled as the octahydrate (Ba(OH)₂·8H₂O)
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Density: ~2.18 g/cm³ (octahydrate)
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Melting Point: 78°C (octahydrate loses water); 408°C (anhydrous)
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Boiling Point: Decomposes before boiling
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Solubility:
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In Water: Soluble (~5.6 g/100 mL at 20 °C for octahydrate)
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Insoluble in alcohol
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pH (aqueous solution): Strongly basic (>11)
Applications
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Analytical Chemistry: Used in titrations as a strong base
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Organic Synthesis: Employed in the hydrolysis of esters and nitriles
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Glass and Ceramics: Used to improve properties of specialty glass and glazes
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Grease Production: Component in the production of barium-based greases
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Water Softening: Occasionally used to remove sulfates
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Pigments and Paper: Used in paper coatings and as a refining agent
Safety Information
Signal Word: ⚠️ Danger
H290 (18.9%): May be corrosive to metals [Warning Corrosive to Metals]
H301 (18.9%): Toxic if swallowed [Danger Acute toxicity, oral]
H302+H332 (19%): Harmful if swallowed or if inhaled [Warning Acute toxicity, oral; acute toxicity, inhalation]
H302 (80.1%): Harmful if swallowed [Warning Acute toxicity, oral]
H314 (76.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
H318 (60.3%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
H332 (62.8%): Harmful if inhaled [Warning Acute toxicity, inhalation]
H412 (18.9%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
P234, P260, P261, P264, P264+P265, P270, P271, P273, P280, P301+P316, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P363, P390, P405, P406, and P501
Handling and Storage
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Handling: Avoid dust formation. Use in a fume hood or well-ventilated space. Always wear PPE
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Storage: Keep container tightly closed in a cool, dry, well-ventilated area. Protect from moisture and acids
Environmental Considerations
Barium compounds are toxic to aquatic life, particularly in soluble form. Prevent uncontrolled release to waterways. Spilled material should be contained and neutralized appropriately.