Description

13-Hydroxystearic Acid is a high-purity, monohydroxy fatty acid derivative of stearic acid, valued for its unique combination of hydrophobic character and a reactive hydroxyl group. This bifunctionality makes it a versatile intermediate for synthesizing specialized polymers, lubricants, and cosmetic esters. It is essential for manufacturers in the polymer, personal care, and specialty chemical industries seeking to enhance product performance through chemical modification.

Application

• Polymer Additive & Modifier: Acts as an internal lubricant and flow promoter in PVC and other thermoplastics, improving processing and surface finish.
• Synthetic Lubricant Base Stock: Used to synthesize complex esters and polyol esters for high-performance, biodegradable lubricants and greases.
• Cosmetic & Personal Care Ingredients: Serves as a key raw material for producing emollients, thickeners, and wax esters in creams, lotions, and lipsticks.
• Corrosion Inhibitor: Incorporated into protective coatings and metalworking fluids to form a protective layer on metal surfaces.
• Resin & Alkyd Modifier: Imparts flexibility and improved weathering properties to alkyd resins used in paints and coatings.
• Pharmaceutical Intermediate: Utilized in the synthesis of certain drug delivery agents and excipients.

Basic Information

Product Name	13-Hydroxystearic Acid
CAS No.	17773-34-1
Molecular Formula	C₁₈H₃₆O₃
Molecular Weight	300.48 g/mol
Synonyms	13-Hydroxyoctadecanoic acid; (+)-13-Hydroxystearic acid; D-13-Hydroxystearic acid; (R)-13-Hydroxystearic acid; 13-HSA; Hydroxystearic acid; 13-Hydroxy stearic acid
EINECS	241-759-6

Quality Control

Our 13-Hydroxystearic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, identification, and impurity profile determination, to ensure it meets precise specifications. A Certificate of Analysis (COA) documenting purity, melting point, and other critical parameters is provided with every shipment to guarantee traceability and compliance.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	78 - 82 °C
Acid Value	180 - 190 mg KOH/g
Hydroxyl Value	180 - 190 mg KOH/g
Loss on Drying	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm

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