Thirumalai Chemicals' Subsidiary Faces Prolonged Outage in Maleic Anhydride Unit, Reducing Revenue by INR 235 Cr Annually

Thirumalai Chemicals Ltd. announced that the Maleic Anhydride unit of its step-down subsidiary, Optimistic Organic Sdn Bhd (OOSB) in Malaysia, will experience a prolonged outage due to machinery failure. The outage, which was initially expected to be rectified earlier, has resulted in reduced revenue as the Maleic Anhydride business contributed about INR 235 Cr. (9.6%) of FY25 consolidated revenue. The derivatives plant of OOSB continues to operate. The actual reduction in revenue is approximately INR 118 crore in H1 FY26. OOSB is taking necessary steps to restore normalcy, including expert consultation and evaluating potential solutions. The Maleic Anhydride unit of OOSB contributed approximately INR 235 crore (9.6%) to the consolidated revenue for FY25 and constituted about INR 140 crore (4%) of the consolidated net worth as at end of FY25.