Description

Dioctadecyl Phthalate is a high-molecular-weight diester of phthalic acid, widely recognized for its excellent performance as a plasticizer and lubricant additive. Its primary value lies in its ability to impart flexibility, durability, and low volatility to polymer systems, ensuring long-term product stability. This compound is essential for manufacturers in the plastics, coatings, and specialty chemical industries seeking reliable secondary plasticizers and processing aids.

Application

• PVC Plasticizer: Acts as a secondary plasticizer to enhance flexibility and elongation in polyvinyl chloride (PVC) compounds, particularly for wire and cable insulation.
• Polymer Processing Aid: Used as a lubricant and flow modifier in the processing of various polymers to reduce melt viscosity and improve surface finish.
• Synthetic Lubricant Additive: Serves as a viscosity index improver and anti-wear agent in high-performance lubricating oils and greases.
• Adhesive and Sealant Formulation: Imparts permanence and low-temperature flexibility to adhesives, sealants, and caulks.
• Coating Resins: Incorporated into coating formulations to improve film-forming properties, adhesion, and weatherability.
• Rubber Compounding: Functions as a softener and processing aid in various synthetic and natural rubber products.

Basic Information

Product Name	Dioctadecyl Phthalate
CAS No.	14117-96-5
Molecular Formula	C50H90O4
Molecular Weight	755.3 g/mol
Synonyms	Distearyl Phthalate; Phthalic Acid Dioctadecyl Ester; Dioctadecyl 1,2-Benzenedicarboxylate; DOP (Distearyl); DOP-18; Octadecyl Phthalate; Stearyl Phthalate; 1,2-Benzenedicarboxylic Acid, Dioctadecyl Ester
EINECS	237-948-3

Quality Control

Our Dioctadecyl Phthalate is manufactured under a stringent quality management system to ensure batch-to-batch consistency and reliability. Quality is verified through comprehensive analytical testing, including assay, identity confirmation, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with agreed specifications and industry standards.

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 to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white waxy solid / flakes
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Acid Value	≤ 1.0 mg KOH/g
Color (APHA)	≤ 50
Melting Point	60 - 70 °C
Moisture (KF)	≤ 0.2%

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