What is 12-Hydroxy Stearic Acid CAS 106-14-9?

CAS 106-14-9 is 12-hydroxystearic acid, also called 12-HSA, a saturated hydroxy fatty acid with the molecular formula C18H36O3. It is produced from hydrogenated castor oil and is supplied as white to pale yellow flakes or powder.

What are the key specification values for 12-HSA?

Typical industrial specifications include a melting point around 74-78 degrees C, hydroxyl value about 155-165 mg KOH/g, and acid value about 175-185 mg KOH/g. The hydroxyl value is especially important because the C12 hydroxyl group controls grease thickening performance.

Why is 12-Hydroxy Stearic Acid used in lithium grease?

12-HSA reacts with lithium hydroxide or other bases to form metal soap fibers that thicken mineral oil into grease. The C12 hydroxyl group helps create a stable fibrous matrix, giving the finished grease heat resistance, shear stability, and water resistance.

How is 12-HSA different from ordinary stearic acid?

Ordinary stearic acid has no hydroxyl group, while 12-HSA contains a hydroxyl group at the C12 position. That functional group allows 12-HSA to form the stable metal soap structures required for high-performance greases, whereas standard stearic acid does not provide the same thickening behavior.

Can 12-Hydroxy Stearic Acid CAS 106-14-9 be used in plastics and rubber?

Yes, it is used as an internal lubricant and mold-release agent in PVC, polystyrene, ABS, and rubber compounding. It helps improve flow, surface finish, and release during extrusion or molding while retaining thermal stability.

12-Hydroxy Stearic Acid CAS 106-14-9

12-Hydroxy Stearic Acid, identified by CAS 106-14-9, is a saturated fatty acid derived from hydrogenated castor oil that functions as a high-efficiency gelling agent and structural modifier within the Industrial & Specialty Chemicals sector. This hydroxylated fatty acid serves as a primary precursor for high-performance lithium-base lubricating greases, facilitating the formation of a stable fibrous matrix that enhances mechanical stability and water resistance in extreme-pressure environments. Beyond lubrication, it is widely utilized as a processing aid and internal lubricant in rigid plastics and rubber compounding to improve surface finish and flow characteristics without compromising thermal integrity. We provide this material with competitive factory pricing to support global manufacturing requirements, ensuring that all batches meet customized specifications for titer point and hydroxyl value. Our logistics infrastructure is optimized for bulk supply, and every shipment is accompanied by comprehensive technical documentation, including MSDS, TDS, COA, to ensure regulatory compliance and process safety.

CAS: 106-14-9
Synonyms: 12-HSA, Octadecanoic acid 12-hydroxy, Ceritfac G, 12-Hydroxystearic acid, Hydroxystearic acid
Einecs: 203-366-1
Molecular Formula: C18H36O3
Grade: Industrial Grade
Package: 25kg/bag (paper-plastic composite) or bulk jumbo bags

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Product Description

1 Technical Data (Physicochemical Properties)

2 Applications

3 Storage & Safety

4 Quality Assurance

Technical Data (Physicochemical Properties)

Property	Specification (Typical Export Standard)
Appearance	White to pale yellow flakes or powder
Melting Point	74°C – 78°C
Hydroxyl Value	155 – 165 mg KOH/g
Acid Value	175 – 185 mg KOH/g
Iodine Value	≤ 3.0 g I2/100g
Saponification Value	180 – 190 mg KOH/g
Moisture Content	≤ 0.5%

Applications

Lubricating Greases: The primary raw material for Lithium and Calcium 12-hydroxystearate greases, providing excellent heat resistance and shear stability.
Plastics and Rubber: Functions as an internal lubricant and mold release agent for PVC, polystyrene, and ABS, reducing friction during extrusion.
Chemical Intermediates: Used in the synthesis of specialized esters and amides for the coatings and textile industries.
Personal Care (Industrial Processing): Acts as a consistency regulator in wax-based industrial formulations and professional-grade salves.

For systems using a non-hydroxylated C18 fatty acid, Stearic Acid is a separate processing feedstock.

Storage & Safety

Storage: Store in a cool, dry, and well-ventilated area. Protect from direct sunlight and moisture to prevent clumping. Keep away from strong oxidizing agents.
Handling: Use standard industrial hygiene practices. Avoid dust formation and inhalation of fine particles.
PPE Recommendations: Wear safety glasses with side shields and protective gloves (nitrile or PVC). In areas with high dust concentration, a NIOSH-approved dust mask is recommended.

Quality Assurance

Our production facility utilizes advanced vacuum distillation and hydrogenation technology to ensure a high-purity product with consistent thermal properties. Each batch undergoes rigorous testing for hydroxyl value and iodine value to guarantee performance in grease thickening. We maintain strict batch-to-batch traceability, providing the technical reliability required for critical industrial lubrication and polymer processing applications.

FAQ - Technical & Supply Chain

Q:
What is 12-Hydroxy Stearic Acid CAS 106-14-9?

A: CAS 106-14-9 is 12-hydroxystearic acid, also called 12-HSA, a saturated hydroxy fatty acid with the molecular formula C18H36O3. It is produced from hydrogenated castor oil and is supplied as white to pale yellow flakes or powder.
Q:
What are the key specification values for 12-HSA?

A: Typical industrial specifications include a melting point around 74-78 degrees C, hydroxyl value about 155-165 mg KOH/g, and acid value about 175-185 mg KOH/g. The hydroxyl value is especially important because the C12 hydroxyl group controls grease thickening performance.
Q:
Why is 12-Hydroxy Stearic Acid used in lithium grease?

A: 12-HSA reacts with lithium hydroxide or other bases to form metal soap fibers that thicken mineral oil into grease. The C12 hydroxyl group helps create a stable fibrous matrix, giving the finished grease heat resistance, shear stability, and water resistance.
Q:
How is 12-HSA different from ordinary stearic acid?

A: Ordinary stearic acid has no hydroxyl group, while 12-HSA contains a hydroxyl group at the C12 position. That functional group allows 12-HSA to form the stable metal soap structures required for high-performance greases, whereas standard stearic acid does not provide the same thickening behavior.
Q:
Can 12-Hydroxy Stearic Acid CAS 106-14-9 be used in plastics and rubber?

A: Yes, it is used as an internal lubricant and mold-release agent in PVC, polystyrene, ABS, and rubber compounding. It helps improve flow, surface finish, and release during extrusion or molding while retaining thermal stability.

Ordering & Documentation

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