Phthalic Anhydride

Phthalic Anhydride (CAS Number: 85-44-9) Supplier in Europe

Physical Details and Properties
Phthalic Anhydride (C₈H₄O₃) is an organic compound appearing as white crystalline flakes or needles with a pungent odor. It has a molecular weight of 148.12 g/mol, a melting point of 131°C, and a boiling point of 295°C (sublimes). Its relative density is 1.53. Phthalic Anhydride is slightly soluble in water (0.6 g/100ml at 20°C), soluble in alcohol and ether, and reacts with water to form phthalic acid. It is hygroscopic and can irritate mucous membranes.

Production Methods
At SoleChem EU, we source Phthalic Anhydride from trusted manufacturers using the catalytic oxidation of o-xylene or naphthalene. The process involves vapor-phase oxidation over a vanadium pentoxide catalyst at 350–400°C, followed by sublimation and condensation to yield high-purity Phthalic Anhydride. The product is purified through distillation to ensure quality and consistency.

Industrial Applications
Phthalic Anhydride is a key chemical intermediate with wide-ranging uses:

• Plasticizers: Used to produce plasticizers like dibutyl phthalate and dioctyl phthalate for flexible PVC products.

• Resins: Essential in manufacturing unsaturated polyester resins for fiberglass-reinforced plastics and alkyd resins for paints and coatings.

• Dyes and Pigments: A precursor for anthraquinone, phthalocyanine blue, and other dyes used in textiles and inks.

Safety Information
Phthalic Anhydride is harmful if inhaled, ingested, or absorbed through the skin, with an oral-rat LD50 of 1530 mg/kg. It causes severe irritation to eyes, skin, and respiratory tract and may trigger allergic reactions. Handle with gloves, goggles, and respiratory protection in a well-ventilated area. Store in a cool, dry place away from moisture, strong bases, and oxidizing agents.

Choose SoleChem EU as your reliable Phthalic Anhydride supplier in Europe. We deliver high-quality C₈H₄O₃ for diverse industrial needs. Contact us for your Phthalic Anhydride requirements.