Description

Polyhydroxystearic Acid is a high-purity, multi-functional fatty acid derivative widely used as a critical intermediate and performance additive. Its unique hydroxylated structure provides excellent emulsifying, dispersing, and surface-modifying properties, making it a valuable component in high-performance formulations. This product is essential for manufacturers in the cosmetics, coatings, plastics, and specialty chemical industries seeking to enhance product stability, texture, and compatibility.

Application

• Primary emulsifier and stabilizer in cosmetic and personal care products (creams, lotions, sunscreens).
• Key dispersing agent and surface treatment for pigments and fillers in coatings and inks.
• Internal and external lubricant and processing aid in polymer and plastic manufacturing.
• Intermediate for the synthesis of specialty esters, polyols, and other oleochemical derivatives.
• Component in metalworking fluids and industrial lubricants for corrosion inhibition and stability.
• Additive in adhesive and sealant formulations to improve rheology and substrate wetting.
• Used in the production of biodegradable surfactants and environmentally friendly additives.

Basic Information

Product Name	Polyhydroxystearic Acid
CAS No.	58128-22-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	12-Hydroxystearic Acid polymer; Hydroxystearic Acid polymer; Poly(12-hydroxystearic acid); PHSA; Oxystearin; Hydrogenated castor oil fatty acids, polymerized; Hydroxylated stearic acid polymer
EINECS	Contact for details

Quality Control

Our Polyhydroxystearic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources.

Specification

Item	Specification
Appearance	Off-white to pale yellow waxy solid
Identification (IR)	Conforms
Acid Value	Contact for details
Hydroxyl Value	Contact for details
Saponification Value	Contact for details
Melting Point	Contact for details
Moisture Content	< 1.0%
Heavy Metals (as Pb)	< 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.