BARIUM STEARATE

Barium stearate is a barium salt of stearic acid, with the chemical formula Ba(C18H35O2)2.
Barium stearate is a high ash, free flowing, non-caking, powder product primarily used as a die lubricant in wire drawing applications or combined with additional soaps (i.e. zinc, etc.) for PVC heat stabilizer additive applications.
Barium stearate provides excellent water repellency and thermal stability, making it suitable for polymer processing and coating systems.

CAS Number: 6865-35-6
EC Number: 229-993-3
Molecular Formula: C36H70BaO4
Molecular Weight: 704.27 g/mol

Synonyms: Barium stearate, 6865-35-6, Barium distearate, Stearic acid, barium salt, Stavinor 40, Octadecanoic acid, barium salt, Barium distearate, pure, EINECS 229-966-3, Octadecanoic acid, barium salt (2:1), 4H9N8A8G6T, BA-ST, SB (STABILIZER), BAEROSTAB 370, BARIUM BIS(STEARATE), DTXSID1027637, RefChem:561036, DTXCID607637, 229-966-3, barium(2+);octadecanoate, MFCD00050711, UNII-4H9N8A8G6T, C36H70BaO4, barium dioctadecanoate, Stearic Acid Barium Salt, SCHEMBL28067, GAA86535, AKOS015839866, AKOS015902772, NS00081634, Q808225, Barium bis(stearate), Bis(octadecanoic acid)barium salt, Einecs 229-966-3, Octadecanoic acid, barium salt (2:1), barium distearate, Barium stearate, octadecanoic acid barium salt, STEARIC ACID BARIUM SALT

Barium stearate is a metallic soap formed from barium and stearic acid, appearing as a white, fine powder with hydrophobic properties.
Barium stearate is insoluble in water but soluble in hot organic solvents, and it is widely used as a lubricant, stabilizer, and release agent in various industrial applications.

Barium stearate provides excellent water repellency and thermal stability, making it suitable for polymer processing and coating systems.
Barium stearate is a barium salt of stearic acid, with the chemical formula Ba(C18H35O2)2.

Barium stearate appears as a white, powdery substance and is recognized for its water repellency, heat stability, and lubricating properties.
Barium stearate's unique characteristics make it a valuable component in many industrial processes, including plastics, rubber, and coatings.

Barium stearate is a high ash, free flowing, non-caking, powder product primarily used as a die lubricant in wire drawing applications or combined with additional soaps (i.e. zinc, etc.) for PVC heat stabilizer additive applications.

Barium stearate is mainly used as a thermo-stabilizer of polyethylene and polyvinyl chloride copolymer, as well as lubricant.
There is excellent heat-resistant stability, oilness and processibility for polyvinyl chloride products such as transparent film, leatheroid, hard plate material and tubing.

Barium stearate also can be used for high-temperature resistance, taking off and touching agents and machinery high-temperature lubricant.
The method for producing Barium stearate is mainly the traditional saponification metathesis process.

This method has technical maturity, but water consumption is large, Barium stearate uses caustic soda, and the high-concentration salt-containing wastewater quantity discharged is large, contaminating the environment.
They do not meet the requirements of current energy-saving, environmental protection, and cleaner production.

Another method is stearic acid, water, and hydrated barta added in advance after adding the saponification method of sodium hydroxide.
The same saponification method of shortcoming.
But Barium stearate is fluffy, not as saponification double decomposition.

Barium stearate based additive.
Barium stearate acts as lubricant in manufacturing plastics and rubbers.
Barium stearate is also acts as stabilizer against deterioration caused by heat and light.

Barium stearate, white or slightly yellow amorphous powder, melting point >225℃, has a stimulating effect on the central nervous system, soluble in hot ethanol, Benzene, toluene and other non-polar solvents, insoluble in water and ethanol.
After heating and dissolving in an organic solvent, Barium stearate becomes a jelly when cooled and has water absorption in the air.

No sulfide pollution.
In case of strong Acid, Barium stearate is decomposed into stearic acid and the corresponding barium Salt.

Uses of Barium Stearate:
Barium stearate is used as a heat stabilizer in PVC and other plastic materials, where it helps prevent degradation during high-temperature processing.
Barium stearate is widely applied as a lubricant and release agent in plastics, rubber, and metal processing, improving flow properties and preventing sticking to molds and equipment.

Barium stearate is utilized in paints and coatings to enhance water resistance, surface smoothness, and durability.
Barium stearate is also used in the production of greases and waxes to improve consistency and performance, and in paper and packaging applications to provide moisture resistance and surface protection.

Barium stearate is not generally used as a stabilizer, but is an important film-calendering lubricant.
Barium stearate is generally used in conjunction with other stabilizers such as Cadmium Stearate and Lead Stearate.

Barium stearate can be used as a flatting and sanding agents in lacquers, coatings and inks and as a drying lubricant for rubbers.
Barium stearate is used in dry - salt fire extinguishers to prevent caking.

Plastics Industry:
Barium stearate is extensively used as a stabilizer and lubricant in the production of PVC and other plastic materials.
Barium stearate helps to prevent the degradation of polymers during processing and extends the lifespan of the final products.

Rubber Industry:
In rubber manufacturing, Barium stearate is used as a release agent and processing aid.
Barium stearate prevents rubber from sticking to molds and enhances the ease of processing, leading to higher efficiency and better-quality products.

Paints and Coatings:
The water-repellent and heat-stable properties of Barium stearate make it a valuable additive in paints and coatings.
Barium stearate improves the durability of coatings, providing resistance to moisture and heat.

Greases and Lubricants:
Barium stearate is a key ingredient in the formulation of industrial greases and lubricants.
Barium stearate's lubricating properties help to reduce friction, improve performance, and extend the lifespan of machinery.

Cosmetic Industry:
In the cosmetic sector, Barium stearate is used as a thickening agent and stabilizer in various products such as creams, lotions, and powders.
Barium stearate helps to enhance texture and stability, ensuring a consistent user experience.

Paper and Textile Industry:
Barium stearate is used as a lubricant and water-repellent agent in the paper and textile industries.
Barium stearate improves the processing and quality of the final products, contributing to enhanced performance and durability.

Industry Uses:
Anti-adhesive/cohesive
Lubricants and lubricant additives
Other (specify)
Processing aids, not otherwise listed

Consumer Use:
Heat stabilizer

Advantages of Barium Stearate:
Non-sulfur staining
Excellent transparency and heat stability
Good electrical insulation
Possess excellent synergistic effect with Cd, Pb stabilizers
Excellent lubrication
Provide good printing ability

Benefits of Barium Stearate:

Excellent Heat Stability:
Barium stearate is widely appreciated for its ability to provide heat stability in various applications.
Barium stearate is often used in PVC and other polymers to enhance their thermal stability, preventing degradation at high temperatures.

Water Repellency:
With its hydrophobic nature, Barium stearate offers superior water repellency, making it ideal for use in products exposed to moisture.
This property enhances the durability and longevity of products in challenging environments.

Improved Lubrication:
The lubricating properties of Barium stearate make it an essential additive in the production of greases and lubricants.
Barium stearate reduces friction and wear in mechanical systems, contributing to smoother operation and extended equipment life.

Efficient Processing Aid:
In the plastics and rubber industries, Barium stearate acts as a processing aid, improving the flow and molding of materials.
Barium stearate facilitates easier handling and enhances the quality of the final products.

Non-Toxic Nature:
Compared to some other stabilizers, Barium stearate is considered to have lower toxicity, making it a safer alternative in many applications.
This quality is particularly important in industries where environmental and health safety are priorities.

Production of Barium Stearate:
Barium stearate is produced through the reaction of stearic acid with barium hydroxide or other barium salts in a neutralization process.
During this reaction, the fatty acid reacts with the barium compound to form the corresponding metal soap, Barium stearate, along with water or other by-products depending on the reactants used.

Barium stearate is then filtered, washed, and dried to obtain a fine white powder with the desired purity and particle size.
In industrial processes, reaction conditions such as temperature, mixing, and stoichiometry are carefully controlled to ensure consistent quality and performance.

Synthesis of Barium Stearate:
A production method for Barium stearate.

The production method comprises the following steps:
1) adding water into a reactor and starting stirring and heating;
2) with water as a reaction dispersion medium and under the conditions of stirring and heating, adding powdery barium hydroxide at normal pressure so as to form a barium hydroxide suspension, then adding subparticle stearic acid while stirring when temperature reaches 50 to 60 ℃, stopping heating when temperature reaches 65 to 66 ℃ and carrying out a reaction for 20 to 30 min when temperature rises to 69 to 70 ℃ caused by reaction exotherm;
And 3) subjecting a reaction product to filtering separation, drying and crushing so as to obtain a Barium stearate product.

Stability and Reactivity of Barium Stearate:

Chemical stability:
Stable under normal conditions of use, handling, and storage.

Reactivity:
Low reactivity.
May react with strong acids.

Conditions to avoid:
Excessive heat.
Strong acids.

Incompatible materials:
Strong acids.
Strong oxidizing agents.

Hazardous decomposition products:
Carbon oxides (CO, CO₂) may form.
Barium-containing fumes may be released.

Handling and Storage of Barium Stearate:

Handling:
Handle with good industrial hygiene practices.
Avoid dust formation.
Avoid inhalation of dust.

Storage:
Store in a cool, dry, and well-ventilated area.
Keep containers tightly closed.

Storage conditions:
Protect from moisture.
Protect from contamination.

Packaging materials:
Store in sealed and compatible containers.

Shelf life:
Stable under recommended storage conditions.

First Aid Measures of Barium Stearate:

Inhalation:
Move to fresh air.
Seek medical attention if symptoms persist.

Skin contact:
Wash with soap and water.

Eye contact:
Rinse with water for several minutes.

Ingestion:
Seek medical advice if ingested.

Most important symptoms:
Dust may cause irritation to eyes.
Dust may irritate the respiratory tract.

Firefighting Measures of Barium Stearate:

Suitable extinguishing media:
Water spray.
Foam.
Dry chemical powder.
Carbon dioxide (CO₂).

Specific hazards:
May release toxic fumes when exposed to fire.

Protective equipment for firefighters:
Wear self-contained breathing apparatus.
Wear protective clothing.

Special precautions:
Avoid inhalation of fumes.
Control dust dispersion.

Accidental Release Measures of Barium Stearate:

Personal precautions:
Avoid dust inhalation.
Avoid contact.
Use appropriate personal protective equipment.

Environmental precautions:
Prevent release into the environment.
Prevent entry into waterways.

Methods for cleanup:
Sweep carefully.
Use vacuum with dust-minimizing methods.
Collect for disposal.

Exposure Controls / Personal Protection of Barium Stearate:

Occupational exposure limits:
Not specifically established.

Engineering controls:
Ensure adequate ventilation.

Respiratory protection:
Use dust mask in dusty conditions.

Hand protection:
Wear protective gloves.

Eye protection:
Use safety glasses.

Skin protection:
Wear protective clothing if necessary.

Hygiene measures:
Wash hands after handling.
Avoid eating or drinking in work areas.

Identifiers of Barium Stearate:
CAS Number: 6865-35-6
EC Number: 229-993-3
Chemical Name: Barium stearate
Molecular Formula: C36H70BaO4
Molecular Weight: 704.27 g/mol
Chemical Type: Metallic soap

Name: barium(2+);octadecanoate
CAS Number: 6865-35-6
FDA UNII: 4H9N8A8G6T
Nikkaji Web: J43.175C
MDL: MFCD00050711
Molecular Weight: 704.27770000
Formula: C36 H70 Ba O4

Product Name: Barium stearate
CAS: 6865-35-6
MF: C36H70BaO4
MW: 704.27
EINECS: 229-966-3

Product Number: S0235
Purity / Analysis Method: >60.0%(GC)
Molecular Formula / Molecular Weight: C36H70BaO4 = 704.28 
Physical State (20 deg.C): Solid
Storage Temperature: Room Temperature (Recommended in a cool and dark place, <15°C)
CAS RN: 6865-35-6
Reaxys Registry Number: 3919666
PubChem Substance ID: 87575771
MDL Number: MFCD00050711

Properties of Barium Stearate:
Melting point: >225℃
density: 1.145g/cm3
storage temp.: Store at room temperature, keep dry and cool
solubility: insoluble in H2O, ethanol
form: Powder
color: white
Odor: odorless
Water Solubility: insoluble H2O, alcohol [HAW93]
InChI: InChI=1S/2C18H36O2.Ba/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
InChIKey: AGXUVMPSUKZYDT-UHFFFAOYSA-L
SMILES: O([Ba]OC(=O)CCCCCCCCCCCCCCCCC)C(=O)CCCCCCCCCCCCCCCCC
LogP: 8.216 (est)
CAS DataBase Reference: 6865-35-6(CAS DataBase Reference)
EPA Substance Registry System: Barium stearate (6865-35-6)

Melting Point: 120 °C
Solubility in water: Slightly soluble

Assay: 95.00 to 100.00
Food Chemicals Codex Listed: No
Boiling Point: 359.40 °C. @ 760.00 mm Hg (est)
Vapor Pressure: 0.000009 mmHg @ 25.00 °C. (est)
Flash Point: 324.00 °F. TCC ( 162.40 °C. ) (est)
logP (o/w): 8.216 (est)

Appearance: White fine powder
Odor: Odorless
Melting Point: Approximately 210–220 °C (decomposes)
Solubility: Insoluble in water, soluble in hot organic solvents
Density: Approximately 1.14 g/cm³
Stability: Stable under recommended storage conditions

Molecular Weight: 704.3 g/mol
Hydrogen Bond Donor Count: 0
Hydrogen Bond Acceptor Count: 4
Rotatable Bond Count: 30
Exact Mass: 704.432658 Da
Monoisotopic Mass: 704.432658 Da
Topological Polar Surface Area: 80.3 Ų
Heavy Atom Count: 41
Complexity: 196
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 3
Compound Is Canonicalized: Yes

Specifications of Barium Stearate:
Appearance: White to Almost white powder to crystal
Stearic acid(composition of fatty acid): min. 60.0 %
Content of Barium: 18.5 to 20.5 %