Description

Octadecanoic Acid, 1,1-Dimethylethyl Ester is a high-purity synthetic ester derived from stearic acid, valued for its role as a versatile intermediate and functional additive. It serves as a key building block in the synthesis of specialty chemicals, offering excellent stability and compatibility. This product is essential for manufacturers in the polymer, lubricant, and personal care industries seeking reliable raw materials for advanced formulations.

Application

• Polymer Additive: Acts as a plasticizer, lubricant, or internal mold release agent in the production of plastics and elastomers.
• Lubricant Formulation: Used as a synthetic base oil or additive component in high-performance greases and metalworking fluids.
• Personal Care & Cosmetics: Functions as an emollient, thickener, or texture enhancer in creams, lotions, and makeup products.
• Chemical Intermediate: Serves as a precursor in organic synthesis for pharmaceuticals, agrochemicals, and specialty surfactants.
• Coating & Ink Industry: Employed as a flow modifier or rheology control agent in solvent-based and UV-curable systems.
• Adhesive & Sealant Production: Enhances flexibility and adhesion properties in various adhesive formulations.

Basic Information

Product Name	Octadecanoic Acid, 1,1-Dimethylethyl Ester
CAS No.	31158-92-6
Molecular Formula	C22H44O2
Molecular Weight	340.59 g/mol
Synonyms	tert-Butyl Stearate; Stearic Acid tert-Butyl Ester; tert-Butyl Octadecanoate; 1,1-Dimethylethyl Octadecanoate; Butyl Stearate, tert-; TBSt; 2-Methyl-2-propyl Octadecanoate
EINECS	250-500-8

Quality Control

Our Octadecanoic Acid, 1,1-Dimethylethyl Ester is manufactured under a strict quality management system. Each batch is tested to ensure it meets precise chemical and physical specifications, including identity, purity, and impurity profiles. A comprehensive Certificate of Analysis (COA) is provided with every shipment to guarantee traceability and compliance with your requirements.

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 heat sources.

Specification

Item	Specification
Appearance	White to off-white solid / waxy solid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Melting Point	Contact for details
Acid Value	≤ 1.0 mg KOH/g
Saponification Value	Contact for details
Heavy Metals	< 10 ppm

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