Description

Octadecanoic Acid, C16-18-Alkyl Esters is a high-purity synthetic ester derived from stearic acid and a blend of C16-C18 fatty alcohols. This compound serves as a versatile and effective emollient, lubricant, and viscosity modifier in advanced formulations. It is essential for manufacturers in the personal care, cosmetics, and specialty chemical industries seeking stable, non-greasy, and high-performance ingredients for their products.

Application

• Personal Care & Cosmetics: Acts as a premium emollient and skin-conditioning agent in creams, lotions, sunscreens, and makeup products, providing a smooth, silky feel without greasiness.
• Hair Care Formulations: Used in conditioners, hair masks, and styling products to impart shine, reduce static, and improve combability.
• Industrial Lubricants & Release Agents: Functions as a biodegradable lubricant component and mold release agent in plastics and rubber processing.
• Textile & Fiber Treatment: Employed as a softening and lubricating agent for synthetic fibers and yarns to enhance processing and final hand feel.
• Pharmaceutical Topicals: Serves as a non-irritating base or emollient in ointments, topical creams, and medicinal patches.
• Polishes & Waxes: A key ingredient in automotive, furniture, and floor polish formulations to provide gloss and protective coating properties.

Basic Information

Product Name	Octadecanoic Acid, C16-18-Alkyl Esters
CAS No.	93820-97-4
Molecular Formula	Typically C34H68O2 to C36H72O2
Molecular Weight	~508.9 - 537.0 g/mol
Synonyms	C16-18 Alkyl Stearate; Stearic Acid, C16-18 Alkyl Esters; Cetyl-Stearyl Stearate; CSS; Alkyl (C16-C18) Stearate; Stearyl Stearate (major component); Cetostearyl Stearate; Octadecanoic Acid, Hexadecyl/Octadecyl Ester
EINECS	Contact for details

Quality Control

Our Octadecanoic Acid, C16-18-Alkyl Esters is manufactured under a strict quality management system. Each batch is tested to ensure it meets stringent specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as ester content, acid value, saponification value, and color are available upon request to support your quality assurance protocols.

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 to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white waxy solid/flakes
Identification (IR)	Conforms
Assay (Ester Content)	Min. 98.0%
Acid Value	Max. 1.0 mg KOH/g
Saponification Value	100 - 115 mg KOH/g
Iodine Value	Max. 1.0 g I₂/100g
Melting Point	50 - 55 °C
Heavy Metals (as Pb)	Max. 10 ppm

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