Diethyl Phthalate (DEP)

Diethyl Phthalate (DEP) is a plasticizing ester used to soften polymers and improve flexibility, processing, and low‑temperature performance in flexible materials.
Uses
Plasticizer; solvent for fragrances; coatings.
Benefits
Good compatibility; low volatility versus light solvents.
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Safety, Compliance & Notes
Thermal Conductivity
0.16W/m·K.
Electrical Conductivity
0.002S/cm
Heat of Formation
-850kJ/mol
Heat of Vaporization
72kJ/mol
Structure
C12H14O4
CAS Number
84-66-2
EINECS Number
201-550-6
Storage & Packaging
Store in closed drums/IBCs at ambient; protect from moisture and strong oxidizers; heat gently for pumping if needed. (Applicable to Diethyl Phthalate (DEP) handling.)
Product Stewardship
Apply product stewardship: risk assessment, proper labeling, transport compliance, and customer communication via SDS/COA; avoid environmental release. (For Diethyl Phthalate (DEP).)
Note
Note: For Diethyl Phthalate (DEP), confirm grade, inhibitor content (if any), and purity/spec limits with the supplier COA before formulation.
Notice
NOTICE: Information is provided for guidance only and does not replace the manufacturer’s SDS/TDS; user must evaluate suitability for the intended process and comply with regulations. (For Diethyl Phthalate (DEP).)