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Diethyl phthalate (DEP) is an organic ester formed by reacting phthalic acid with ethanol.
Key points:
Formula: C₁₂H₁₄O₄
Structure: Features a benzene ring with two ethyl ester groups (–COOCH₂CH₃) attached at adjacent positions.
Properties: Colorless, oily liquid; low water solubility, mild odor, high stability.
Uses:
Primary use as a plasticizer (softens plastics like PVC and cellulose acetate).
Solvent/fixative in cosmetics, perfumes, inks, and coatings.
Safety: Low acute toxicity but faces scrutiny over potential endocrine disruption and environmental persistence, leading to restrictions in some products (e.g., toys).
In short: A widely used, stable phthalate ester plasticizer and solvent, increasingly regulated due to health concerns.
Diethyl phthalate (DEP) is an organic compound belonging to the class of phthalate esters. Here's a concise overview:
Chemical Formula: C₁₂H₁₄O₄
Structure: Formed by esterification of phthalic acid with two ethanol molecules. Features a rigid benzene ring core with two ethyl ester groups (-COOCH₂CH₃) attached at adjacent (ortho) positions.
Properties: Colorless, odorless (or faint aromatic odor), oily liquid. Low water solubility, good solvent for many organics. Relatively low volatility and high stability.
Primary Uses:
Plasticizer: Widely used to soften and increase flexibility of plastics (especially cellulose acetate, PVC) and synthetic rubbers.
Solvent/Fixative: In cosmetics, fragrances, perfumes, personal care products (hairsprays, lotions), coatings, and inks.
Detergent Carrier: In industrial cleaners.
Safety & Concerns: Generally low acute toxicity. However, like many phthalates, there are ongoing concerns about potential endocrine disruption and environmental persistence, leading to restricted use in some applications (e.g., children's toys in the EU/US).
In short: Diethyl phthalate is a common phthalate ester used mainly as a plasticizer and solvent, valued for its stability and solubility, but subject to regulatory scrutiny over potential long-term health effects.
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