Anhydrous Barium Hydroxide (Barium Dihydroxide) CAS 17194-00-2 Full English Product Specification

1. Basic Identification

• IUPAC Name: Barium(2+) dihydroxide
• Common Names: Anhydrous Barium Hydroxide, Baryta Anhydrous, Barium Dihydroxide
• CAS No.: 17194-00-2
• EC/EINECS No.: 241-234-5
• MDL No.: MFCD00003407
• Molecular Formula: \(\boldsymbol{Ba(OH)_2}\)
• Molecular Weight: 171.34
• SMILES: [OH-].[OH-].[Ba+2]
• HS Code: 28164000
• UN Number: UN 3262
• IMDG Hazard Class: Class 8 Corrosive Substance, Packing Group II
• Signal Word: Danger

2. Physicochemical Properties

1. Appearance: White odorless crystalline fine powder
2. Density (25°C): 2.18–2.20 g/cm³
3. Melting Point: >300 °C (decomposes on strong heating)
4. Boiling Point: Decomposes at ~1032 °C
5. Water Solubility: 3.89 g/100 g water at 20°C; dissolves endothermically to form strong alkaline solution
6. Solvent Compatibility: Soluble in dilute acids, methanol, ethanol; insoluble in ether, hydrocarbons
7. pH Value (aqueous): 13.08 (100 mM solution), strong inorganic base
8. Hygroscopy: Extremely air-sensitive; rapidly absorbs CO₂ and moisture from air to form insoluble barium carbonate lumps
9. Stability: Stable under fully sealed anhydrous storage; incompatible with acids, carbon dioxide, moisture, non-ferrous metals (Al, Zn)
10. Chemical Feature: Unique strong base free of carbonate impurities in fresh aqueous solution, ideal for weak acid titration

3. Standard COA Technical Specifications

Industrial Anhydrous Grade ≥95.0%

High-Purity Reagent Grade ≥98.0%

• Purity ≥98.0%, BaCO₃ ≤0.8%, ultra-low trace metals for analytical lab titration & fine organic synthesis

4. Main Industrial Applications

1. Analytical Chemistry Reagent (Core Lab Usage)

2. Organic Synthesis Strong Base Catalyst

• Ester & nitrile hydrolysis, selective saponification of diesters
• Decarboxylation of amino acids, cyclization for cyclopentanone & fine heterocyclic intermediates
• Catalyst for polycondensation, transesterification and sugar lactone preparation

3. Inorganic Barium Salt Precursor

4. Plastic & PVC Heat Stabilizer Additive

5. Sugar Refining & Water Treatment

• Beet sugar decolorization & purification, removes sulfate impurities
• Hard water softener, neutralizer for acidic industrial wastewater; precipitates sulfate and heavy metal ions as insoluble barium salts.

6. Other Auxiliary Fields

• Boiler descaling agent, silicate fusion flux
• Soap & fat saponification raw material, lubricant & grease additive

5. Export Packaging & Storage Transportation

Standard Packing Options

1. Industrial bulk: 25kg PP woven bag with double PE anti-moisture inner liner
2. Ton jumbo bag: 1000kg woven bag with sealed moisture barrier film
3. Reagent small packing: 500g / 1kg sealed plastic bottle with nitrogen filling
   
   
   All pallets wrapped with waterproof stretch film for long sea transit

Storage & Transit Rules

• Warehouse: Cool, dry, fully ventilated corrosive chemical warehouse, storage temperature ≤30°C
• Keep containers completely airtight to avoid contact with air CO₂ and moisture
• Strictly segregate from acidic chemicals, food raw materials, aluminum/zinc metal products
• Transport as Class 8 corrosive dangerous goods; prevent rain exposure and package breakage during shipment

6. GHS Hazard Statements & Operation Protection

Hazard Statements

• H302: Harmful if swallowed (barium ion systemic toxicity)
• H314: Causes severe skin burns and serious eye damage
• H332: Harmful if inhaled (alkaline dust irritation)
• H290: May be corrosive to metals
• Toxic to aquatic life due to strong alkalinity and barium ions

Mandatory PPE

• Dust half-face respirator with particulate filter
• Fully sealed chemical safety goggles / face shield
• Alkali-resistant thick nitrile rubber gloves
• Impermeable full-body anti-corrosion protective overalls
• Local exhaust ventilation for weighing and dissolving operations

Spill & First Aid Treatment

1. Spill disposal: Cover white powder with dry sand to suppress dust; prohibit water flushing; neutralize waste with dilute weak acid, collect residues as hazardous waste
2. Skin contact: Remove contaminated clothes instantly, rinse skin with massive running clean water for ≥15 mins
3. Eye contact: Flush eyes continuously with clean running water for 15 mins and rush to hospital
4. Inhalation: Move victim to fresh air; supply oxygen if breathing difficulty occurs
5. Ingestion: Do NOT induce vomiting, drink large volume clean water and seek emergency toxic treatment

7. Foreign Trade Selling Points

1. High purity ≥95%, low carbonate impurity, stable strong alkaline performance for lab titration and organic synthesis factories
2. Double-layer anti-moisture sealed packaging, effectively avoid carbonation lump formation during long ocean transit
3. Two grades available: Industrial stabilizer/water treatment grade & high-purity lab reagent grade
4. Complete set of Class 8 corrosive dangerous goods export documents for smooth customs clearance
5. Flexible supply: Small trial bag orders and bulk jumbo bag mass orders acceptable

8. Full Set Export Supporting Documents

• Batch Certificate of Analysis (COA)
• English Version SDS Safety Data Sheet
• Dangerous Goods Package Certificate
• IMDG Maritime Dangerous Goods Declaration File
• Certificate of Origin
• Factory batch quality inspection report