Schwechat · Austria · since 1995
The Phthalic Anhydride Specialist in Europe
ATMOSA Petrochemie GmbH has been producing phthalic anhydride in Schwechat near Vienna since 1995. We are a reliable long-term partner to the European chemical industry and part of the COIM Group.
Who we are
One product. Done exceptionally well.
ATMOSA Petrochemie GmbH is one of the major producers of phthalic anhydride (PA) in Europe, with an annual production capacity of 50,000 tonnes. The company was established in May 1995, when the Taiwanese Dahin Group acquired the production facility from Chemie Linz, an affiliate of OMV. Since 2023 ATMOSA has been wholly owned by COIM, the Italian specialty-chemicals group, and focuses on the European market.
Our plant is located within the Borealis industrial complex in Schwechat, directly at the gates of Vienna, with its own rail connection, direct road access and Vienna International Airport just 5 km away. From here we have supplied chemical producers across Europe and worldwide for three decades. ATMOSA is ISO 14001 certified and fully REACH compliant. Our customers rely on consistent product quality, dependable logistics and the technical expertise of a dedicated single-product specialist.
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50,000 t
Annual production capacity
Delivered roughly 70% molten and 30% as flakes
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30+
Years of production experience
Producing as ATMOSA since 1995, on a site in operation since 1968
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40
Employees at the Schwechat site
Production, laboratory, logistics and administration in one location
Why ATMOSA?
What purchasers and technical teams value about working with us.
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Reliable supply
Our experienced technical team, backed by the worldwide engineering and process knowledge of the COIM Group, ensures uninterrupted production and dependable delivery.
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Consistently high quality
Rigorous in-process and final product control ensures consistently high purity, a low colour index and compliance with customer-specific requirements.
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Flexible logistics
Delivery molten in heated tank trucks or as flakes in bags and big bags, with our own rail connection, direct road access and short lead times across Europe.
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Compliance & trust
ISO 14001 certified, REACH compliant and open to customer audits. Full batch traceability and complete documentation come as standard.
Explore ATMOSA
Phthalic Anhydride
High-purity PA (CAS 85-44-9) as flakes or molten product. Minimum purity 99.8%, fully REACH-registered.
Explore the productOur History
From the 1995 acquisition of the Chemie Linz plant to today as part of the COIM Group: three decades of PA production.
Read our storyContact
Talk to us directly, by phone or e-mail. Short paths, personal answers, no ticket systems.
Get in touchLooking for a reliable PA supplier?
Call us at +43 1 7062849 or write to office@atmosa.at