Alias: Diethyl phthalate; Diethyl ester of phthalic acid; DEP
English Name: Diethyl phthalate
CAS No.: 84-66-2
EC NO: 201-550-6
Molecular Formula: C₁₂H₁₄O₄
Molecular Weight: 222.24
Properties: This product is a colorless transparent oily liquid with a slight aromatic odor. Refractive index 1.499–1.502 (20°C).
Reference Standard:

Applications: This product is used as a plasticizer, solvent, lubricant, fragrance fixative, foaming agent for flotation of colored or rare metal ores, stationary phase in gas chromatography, denaturant for alcohol, and spray insecticide. It has good compatibility with most resins such as cellulose acetate, cellulose acetate butyrate, polyvinyl acetate, nitrocellulose, ethyl cellulose, polymethyl methacrylate, polystyrene, polyvinyl butyral, and vinyl chloride-vinyl acetate copolymers. It is mainly used as a plasticizer for cellulose resins, offering good low-temperature flexibility and durability. When used in combination with DMP, it can improve the water resistance and elasticity of products. It is also used as a diluent for fragrances, lubricant, stationary phase in gas chromatography, etc.
Packaging, Storage, Transport, and Safety
● 200L drums, flexitanks, isotanks, etc.
● Store in a dry, well-ventilated indoor area. Protect from severe impact and rain during transportation.
● Contact with high heat, open flame, or oxidizers may pose a risk of combustion.