Officials in Khuzestan province said the facility was hit during Israeli attacks, with reports indicating damage to chlorine-related units and storage facilities. Any prolonged disruption could affect both domestic supply chains and exports from one of Iran's most important petrochemical hubs.
Karoon is located in Mahshahr, home to a concentration of petrochemical facilities that form a major pillar of Iran's non-oil economy.
Links to the IRGC
Karoon is owned by Persian Gulf Petrochemical Industries Company (PGPIC), Iran's largest petrochemical holding group.
The United States sanctioned PGPIC and dozens of affiliated companies in 2019, saying the group generated billions of dollars that helped finance the Islamic Revolutionary Guards Corps and its construction arm, Khatam al-Anbiya.
According to the US Treasury, PGPIC subsidiaries worked with Khatam al-Anbiya through engineering, construction and financing contracts worth hundreds of millions of dollars. Washington said revenue from the petrochemical sector provided an important source of funding for the IRGC's military activities.
The Guards have long maintained a significant presence in Iran's energy and industrial sectors through a network of companies, contractors and affiliated organizations that oversee major infrastructure projects and benefit from export revenues.
Role in missile-related industries
Petrochemical facilities are primarily civilian enterprises, but some of their products can have military applications.
Chemical compounds produced in Mahshahr and other petrochemical centers such as Assaluyeh can be used as precursor materials in the production of propellants and other components associated with missile programs.
During previous operations targeting industrial facilities in the Mahshahr area, Israel said sites in the region were involved in producing materials used by Iran's missile program.
Israeli military officials said on Monday that one of their objectives was to destroy infrastructure used to manufacture raw materials essential for ballistic missile production.
The dual-use nature of petrochemical production means facilities can simultaneously support civilian industries while supplying materials that may have military applications.
Critical supplier for domestic industry
Despite scrutiny over military links, Karoon remains one of the most important suppliers to Iran's civilian manufacturing sector.
The company is the region's only producer of isocyanates, advanced chemical compounds used in the production of polyurethane materials.
These products serve as the foundation for a wide range of industrial and consumer goods, including insulation, adhesives, coatings, automotive components, footwear, furniture and household appliances.
Karoon receives feedstock such as benzene and toluene from neighboring petrochemical plants and combines them with chlorine, carbon monoxide and hydrogen to produce isocyanates and related products.
The facility's strategic importance increased after the implementation of the HYCO (Hydrogen and Carbon Monoxide) project, which enabled domestic production of carbon monoxide and hydrogen and reduced dependence on imported supplies.
Impact on supply chains and exports
Industry experts say damage to chlorine production units could have consequences beyond the immediate facility.
Chlorine is essential for the production of phosgene, a key intermediate chemical used in manufacturing isocyanates. Any interruption to chlorine supplies can halt downstream production, affecting multiple industries dependent on polyurethane products.
The effects could extend throughout the Mahshahr industrial zone, disrupting manufacturers that rely on Karoon's output.
Karoon also serves export markets. The company ships products including aniline to India and sells other chemical products to customers in Turkey, Russia and neighboring countries.
Those exports have helped Iran maintain a regional presence in specialty chemical markets while generating valuable foreign currency earnings.
A strategic target
The strike illustrates how Iran's petrochemical sector occupies a position at the intersection of economic and security concerns.
For Tehran, facilities such as Karoon support industrial self-sufficiency, exports and employment. For Israel and Western governments, parts of the sector are viewed as supporting broader military and missile-related capabilities through financial links to the IRGC and the production of dual-use materials.
As a result, major petrochemical complexes have become increasingly significant targets in a confrontation that extends well beyond the battlefield and into the infrastructure underpinning Iran's economy and defense industries.
