Barium hydroxide octahydrate

CAS Number
12230-71-6
EC Number
602-490-7

What is Barium hydroxide octahydrate?

Barium hydroxide octahydrate (CAS 12230-71-6) is a crystalline inorganic base; a hydrated salt for industrial alkaline chemistry.

Where is Barium hydroxide octahydrate used?

  • Plastics and polymers: catalyst or stabilizer precursor in PVC compounding and polymerization
  • Water treatment: pH adjustment and sulfate precipitation where calcium-free effluent is required
  • Leather and textile: deliming and fiber preparation baths
  • Mining and metals: removal of sulfate contamination from process streams
  • It conditions leach liquors ahead of downstream recovery steps.

Good to know: Its controlled alkalinity avoids the fiber damage often associated with stronger caustic alternatives. It delivers strong, controlled basicity where sodium or potassium hydroxides are unsuitable.

Commercial specifications

  • Purity typically 95% to 99%+
  • Multi-wall bags or fiber drums for bulk procurement

Other Names (Synonyms)

Barium dihydroxide octahydrate|Dihydroxybarium octahydrate|L5Q5V03TBN|Barium hydroxide (Ba(OH)2), octahydrate|RefChem:116529

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What are the physical properties of Barium hydroxide octahydrate?

Melting Point 78 °C
Boiling Point 780°C
Density 2.18 g/cm³ (solid)
Appearance white crystalline powder
Color White
Odor Odorless
Form Solid
Water Solubility 56 g/L (15 ºC)
pH 14 (H2O, 20℃)(saturated aqueous solution)

How is Barium hydroxide octahydrate classified and handled safely? Learn More

Danger
GHS05· Corrosive GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H302 Harmful if swallowed
H314 Causes severe skin burns and eye damage
H318 Causes serious eye damage
H332 Harmful if inhaled
H371 May cause damage to organs

Precautionary Statements

P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.

Which trade and regulatory codes apply to Barium hydroxide octahydrate?

HS Code 28164000
UN Number 3262
ADR Class 8
Packing Group II
WGK (Germany) 1
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