Phthalic Anhydride

CAS:85-44-9
Code:PA
Formula:C8H4O3

Phthalic Anhydride (PA) is a key building block for polyester resins, alkyd resins, and plasticizers, providing excellent thermal stability and chemical resistance.

Available from Arpadis, a European chemical distributor supplying synthetic resin intermediates to manufacturers across Europe since 1999.

Technical Specifications

Molecular FormulaC8H4O3
Molecular Weight148.11
Density1.527 g/cm³
Melting Point131.6°C
Boiling Point295°C
Purity99.0% min

Values shown are typical specification targets; request the latest Technical Data Sheet for certified ranges.

Availability & Supply

Arpadis distributes Phthalic Anhydride across Europe with supply chain coverage from our offices in Belgium, France, Italy, the UK, and Portugal. Request a quote for pricing and lead times, or contact us for technical data sheets (TDS) and safety data sheets (SDS).

European distributionISO 9001:2015 certifiedResponsible Care

Applications

Unsaturated polyester resins
alkyd resins
plasticizers (DOP
DBP)
dyes
pharmaceuticals

Chemical Features

thermoset

About Arpadis

Arpadis is a family-owned European chemical distribution company active since 1999. With ISO 9001:2015 certification and Responsible Care commitment, Arpadis supplies specialty chemicals — including synthetic resin intermediates — to coatings, adhesives, plastics, and foam manufacturers across Europe.