Description

Fatty Acids, C18-Unsatd., Dimers, Distn. Lights is a refined fraction of dimerized unsaturated C18 fatty acids, specifically the lighter distillation cuts. This product is valued for its unique chemical structure, offering enhanced reactivity and functionality compared to monomeric fatty acids. It serves as a critical intermediate and performance additive for industrial manufacturers seeking to improve the properties of polymers, lubricants, and surface coatings. The material is particularly important for applications requiring tailored viscosity, thermal stability, and adhesion promotion.

Application

• Polymer & Resin Modification: Acts as a reactive diluent, flexibilizer, and chain extender in polyamide, polyester, and epoxy resin systems.
• Lubricant & Grease Formulation: Used as a component in synthetic lubricants and complex greases to enhance viscosity index, thermal stability, and lubricity.
• Surface Coatings & Inks: Imparts improved flow, leveling, and adhesion properties in alkyd resins, printing inks, and overprint varnishes.
• Adhesives & Sealants: Functions as a tackifier and plasticizer, improving bond strength and flexibility in hot-melt and pressure-sensitive adhesive formulations.
• Corrosion Inhibitors: Serves as a base material for manufacturing oil-soluble corrosion inhibitors and metalworking fluid additives.
• Chemical Intermediate: Used in the synthesis of dimer acid derivatives, such as dimer diamines and esters, for further specialty chemical production.

Basic Information

Product Name	Fatty Acids, C18-Unsatd., Dimers, Distn. Lights
CAS No.	68956-12-7
Molecular Formula	Typically C36H66O4 (for a dimeric structure)
Molecular Weight	~562.9 g/mol (Average)
Synonyms	Dimer Acid Light Ends; Distilled Dimer Acid Lights; C18 Unsaturated Dimer Acid Light Fraction; Dimerized Fatty Acid Light Cuts; Light Dimer Acid; Oleic-Linoleic Acid Dimer Lights; Dimer Acid, Distillation Residue; Fatty Acids, C18-Unsaturated, Dimers, Distillation Lights
EINECS	Contact for details

Quality Control

Our Fatty Acids, C18-Unsatd., Dimers, Distn. Lights is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistency and compliance with agreed specifications. Key parameters such as acid value, saponification value, color, and viscosity are monitored. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee traceability and product integrity.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. This product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve quality. Recommended storage temperature is between 15°C and 25°C.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 5
Acid Value (mg KOH/g)	185 - 205
Saponification Value (mg KOH/g)	190 - 210
Viscosity @ 25°C (cPs)	Contact for details
Moisture (Karl Fischer)	≤ 0.2%
Composition (GC)	Predominantly Dimer Acids

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