Phthalic Anhydride

Phthalic Anhydride

IGPL is one of the largest single location producers of Phthalic Anhydride (PAN) of international standards.

PAN is a principal commercial form of phthalic acid, discovered in 1836. It was the first anhydride of a dicarboxylic acid to be used commercially and is comparable in its importance to acetic acid. The most important reaction of PAN is with alcohols or diols to give esters or polyesters.

PAN is a versatile intermediate in organic chemistry. PAN is a precursor to a variety of reagents useful in organic synthesis. A colourless solid, is an important industrial chemical, especially for the large-scale production of plasticizers for plastics.

PAN is widely used in industry for the production of certain dyes. A well-known application of this reactivity is the preparation of the anthroquinone dye quinizarin. The primary use of PAN is as a chemical intermediate in the production of plastics from vinyl chloride.

Phthalate esters, which function as plasticizers, are derived from PAN. PAN has another major use in the production of polyester resins and other minor uses in the production of alkyd resins used in paints and lacquers, certain dyes, insect repellents and urethane polyester polyols. It has also been used as a rubber scorch inhibitor and retarder (HSDB, 1995; National Cancer Institute (NCI), 1979). PAN is a chemical intermediate that reacts readily and produces a broad range of products that process easily and give a wide range of performance characteristics at a low cost.

IGPL operates its plant based on the processes of the licensor M/s Wacker Chemie GmbH, Germany. The process is Wacker’s Von-Heyden’s Low Energy Process and the plant has been engineered by M/s Lurgi GmbH, Germany. Existing capacity of Phthalic Anydride is  at 2,22,100 MTPA.

Product Specifications

Sr. No. Characteristics Test Method Guaranteed Specifications
1. Physical Appearance Visual Snow White Free Flowing Flakes
2. Color of Molten Material (APHA) ASTM-D-3366-95 Reapproved-2003 20 HU Max.
3. Colour of Molten Material at 250°C for 90 Minutes(APHA) ASTM-D-3366-95 Reapproved-2003 40 HU Max.
4. Solidification Point (°C) ASTM-D-6875-12 130.8 °C Min.
5. Purity as C4H2O3 % by Wt. by GC WI/QCL/043 99.8% Min.
6. Maleic Anhydride & Other Oxidisable Impurities expressed as C4H2O3% by Wt. WI/QCL/043 0.05% Max.
7. Acid Value (mg of KOH/gm PA) WI/QCL/043 753 to 763
Quick Links
Registered Office

T-10, 3rd Floor, Jairam Complex, Mala, Neugi Nagar, Panaji, Goa – 403 001

Corporate Office

401-404, Raheja Centre, 214 , Nariman Point, Mumbai – 400021

Fax No : 022-22040747

CIN : L51496GA1988PLC000915

Privacy Settings
We use cookies to enhance your experience while using our website. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. We also use content and scripts from third parties that may use tracking technologies. You can selectively provide your consent below to allow such third party embeds. For complete information about the cookies we use, data we collect and how we process them, please check our Privacy Policy
Consent to display content from - Youtube
Consent to display content from - Vimeo
Google Maps
Consent to display content from - Google
Consent to display content from - Spotify
Sound Cloud
Consent to display content from - Sound