Description

Dioctyl Phthalate CAS NO 24-38-4 is a high-purity, high-molecular-weight phthalate ester widely recognized as a primary plasticizer. This compound is essential for imparting flexibility, durability, and processability to a wide range of polymeric materials. It is a critical raw material for manufacturers in the plastics, coatings, and adhesives industries seeking reliable performance and consistent quality in their formulations.

Application

• Primary Plasticizer for PVC: The dominant application, providing excellent flexibility, low volatility, and good electrical insulation properties to polyvinyl chloride (PVC) products such as cables, hoses, flooring, and synthetic leather.
• Coating and Ink Formulations: Used as a film-forming agent and flexibilizer in various coatings, printing inks, and adhesives to enhance workability and final film properties.
• Rubber and Elastomer Processing: Acts as a processing aid and softener in the manufacture of certain synthetic rubbers and elastomers.
• Sealants and Caulks: Imparts permanence and flexibility to non-hardening sealant and caulk formulations.
• Cellulosic Resins: Employed as a plasticizer for cellulose-based plastics, improving their moldability and impact resistance.
• Dispersing Agent: Functions as a solvent and carrier in pigments and dyes for various industrial applications.

Basic Information

Product Name	Dioctyl Phthalate
CAS No.	24-38-4
Molecular Formula	C24H38O4
Molecular Weight	390.56 g/mol
Synonyms	DOP; Di-n-octyl phthalate; DNOP; 1,2-Benzenedicarboxylic acid, dioctyl ester; Bis(2-ethylhexyl) phthalate (common isomer); BEHP; Phthalic acid, dioctyl ester; Octyl phthalate; Vinicizer 85 (trade name)
EINECS	203-386-3

Quality Control

Our Dioctyl Phthalate is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against comprehensive specifications, including assay, acidity, color, and moisture content. A Certificate of Analysis (COA) documenting all test results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from strong acids, oxidizing agents, and heat sources. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow oily liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.5%
Acidity (as Phthalic Acid)	≤ 0.01%
Color (APHA)	≤ 20
Moisture (KF)	≤ 0.05%
Specific Gravity (20/20°C)	0.983 - 0.987
Refractive Index (n20D)	1.483 - 1.487

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