Description

10-Hydroxystearic Acid is a high-value, hydroxylated derivative of stearic acid, offering unique bifunctional reactivity due to its carboxylic acid and secondary hydroxyl groups. This compound is essential for synthesizing specialized polymers, lubricants, and cosmetic ingredients where enhanced hydrophilicity, adhesion, or emulsification is required. It serves as a critical intermediate for manufacturers in the personal care, plastics, coatings, and specialty chemical industries seeking to modify material properties and performance.

Application

• Polymer & Resin Modification: Acts as a monomer or chain modifier in the production of polyesters, alkyd resins, and polyurethanes, improving flexibility, adhesion, and hydrophilicity.
• Cosmetic & Personal Care Ingredients: Used in the synthesis of emulsifiers, pearlescent agents, and viscosity modifiers for creams, lotions, and makeup products.
• Lubricants & Greases: Serves as a precursor for high-performance lithium and calcium soap thickeners, as well as synthetic ester-based lubricants with excellent thermal stability.
• Surface Coatings & Inks: Incorporated into coating formulations to enhance pigment wetting, flow properties, and substrate adhesion.
• Pharmaceutical Intermediates: Utilized in the synthesis of certain drug substances and excipients where specific fatty acid derivatives are needed.
• Textile & Fiber Auxiliaries: Employed in the manufacture of softeners, spin finishes, and other textile processing chemicals.

Basic Information

Product Name	10-Hydroxystearic Acid
CAS No.	638-26-6
Molecular Formula	C18H36O3
Molecular Weight	300.48 g/mol
Synonyms	10-Hydroxyoctadecanoic acid; DL-10-Hydroxystearic acid; (+/-)-10-Hydroxystearic acid; Hydroxystearic acid; 10-HSA; 10-Hydroxy stearic acid; Octadecanoic acid, 10-hydroxy-
EINECS	211-341-8

Quality Control

Our 10-Hydroxystearic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, identification, and impurity profiling, to ensure it meets precise specifications for purity and consistency. Certificates of Analysis (COA) documenting these results are provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be kept under an inert atmosphere (e.g., nitrogen) after opening to prevent oxidation and moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	72 - 76 °C
Loss on Drying	≤ 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.