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Barium hydroxide monohydrate

CAS
22326-55-2
EC
606-983-8
Mol. Weight
189.36 g/mol

Description

Barium hydroxide monohydrate (CAS 22326-55-2) is a strong inorganic base supplied in solid form, distinct from the anhydrous and octahydrate variants in handling characteristics and water content.

It functions primarily as a pH regulator, alkaline catalyst, and precipitating agent across chemical manufacturing and industrial processing. In water treatment, it precipitates sulfate and heavy metal ions.

This enables effluent compliance in industrial discharge streams. Pharmaceutical manufacturers use it as a base catalyst in synthesis steps where controlled alkalinity and low ionic contamination are critical.

Mining and metallurgical operations apply it to adjust leach circuit pH and to remove sulfate from process water. This reduces scaling and corrosion in downstream equipment during processing.

In biotechnology and laboratory settings, it supports CO₂ absorption and reagent preparation where a reliable, consistent alkaline source is required for sensitive chemical reactions.

The product is supplied as a white powder or granule. Technical grade is the standard commercial form, with reagent and pharmaceutical grades available for higher-purity applications.

Packaging typically ranges from multi-wall bags to bulk quantities depending on application scale. All batches are manufactured to meet rigorous industrial and chemical safety specifications.

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Physical Properties

Melting Point 78 °C(lit.)
Density 3.743 g/mL at 25 °C(lit.)
Color White
Form Crystalline
Water Solubility Soluble in water.
Vapor Pressure 300 hPa ( 78 °C)

Trade & Regulatory

UN Number 3262
ADR Class 8
Packing Group III
Storage Class 8B - Non-combustible corrosive hazardous materials
WGK (Germany) 1

Documentation

Other Names

Barium hydroxide (Ba(OH)2), monohydrate|Barium HYDROXIDE MONOHYDRETE

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