Description

Didecyl Phthalate (CAS NO 84-77-5) is a high-molecular-weight phthalate ester plasticizer valued for its excellent permanence and low volatility. It is a critical component in formulations requiring long-term flexibility and durability under demanding conditions. This product is essential for manufacturers in the polymer and specialty chemical industries seeking to enhance the performance and lifespan of their materials.

Application

• Primary plasticizer for polyvinyl chloride (PVC), imparting excellent flexibility and low-temperature performance.
• Key ingredient in the production of high-quality, durable PVC cables, wires, and insulation materials.
• Used in the formulation of specialty adhesives, sealants, and caulks to improve elasticity and adhesion.
• Plasticizer for synthetic rubbers and other elastomers in industrial applications.
• Component in the manufacture of coated fabrics, automotive interiors, and other flexible composites.
• Used as a processing aid and lubricant in various polymer compounding operations.
• Employed in specialty coatings and inks to modify film properties and enhance workability.

Basic Information

Product Name	Didecyl Phthalate
CAS No.	84-77-5
Molecular Formula	C28H46O4
Molecular Weight	446.66 g/mol
Synonyms	Didecyl phthalate; Di-n-decyl phthalate; Phthalic acid, didecyl ester; 1,2-Benzenedicarboxylic acid, didecyl ester; DDP; DIDP (Note: DIDP commonly refers to Diisodecyl Phthalate, a different isomer); n-Decyl phthalate; Bis(n-decyl) phthalate
EINECS	201-559-5

Quality Control

Our Didecyl Phthalate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, color, and physical properties. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from strong alkalis and incompatible materials. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep container tightly sealed when not in use to prevent contamination and moisture absorption.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
Color (APHA)	≤ 30
Acidity (as Phthalic Acid)	≤ 0.01%
Water Content (KF)	≤ 0.05%
Specific Gravity (20/20°C)	0.965 - 0.975
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.