Diethyl phthalate (DEP)

Diethyl Phthalate (DEP) is a versatile plasticizer widely used to enhance the flexibility, durability, and processability of polymer systems. Known for its excellent compatibility with a range of resins and polymers, DEP is commonly applied in polyvinyl chloride (PVC), adhesives, sealants, inks, and coatings, where it improves softness, stability, and ease of processing. Its low volatility and dependable performance make it an attractive choice for both industrial and specialty applications.

Outside of plastics, DEP plays an important role in cosmetics, personal care, and pharmaceutical formulations, functioning as a solvent, carrier, and fragrance fixative. It is also used in textiles, rubber products, agrochemicals, and packaging materials, where it contributes to product consistency and performance. With its balance of versatility, cost-effectiveness, and broad industrial acceptance, diethyl phthalate remains an essential raw material across industries such as construction, consumer goods, healthcare, coatings, and specialty chemicals.

Synonyms: Diethyl 1,2-benzenedicarboxylate, phthalic acid diethyl ester, ethyl phthalate

Characteristics:

IUPAC Name: Diethyl benzene-1,2-dicarboxylate

CAS Number: 84-66-2

UN Number: 3082

Available Sizes: Bulk, Drum, Pail, Gallon

Recommended Use / Industries:

• Cellulose film coatings
• Cosmetics and fragrances (fixative)
• Plasticizer in PVC and polymers
• Pesticide and agrochemical formulations