Thirumalai Chemicals Limited was incorporated in 1972 as a public limited company. It was established for the manufacturer of PAN with an initial installed capacity of 7500 mts per annum based on the technology supplied by Ch.F.Von Heyden and Davy Power Gas, Germany. The plant commenced commercial production in 1976. Between 1983-86, the company expanded its PAN capacity by 15000 mts per annum based technology supplied by PSA-LZV Von Heyden and Davy McKee, Germany. During this time, the company installed a plant to recover Maleic Anhydride from effluent gases based on technology supplied by Alusuisee Italia Spa, Italy. The Company also took up an energy revamp project of its old plant, using its own technology and engineering expertise. The Company has attempted to continuously modernize and retrofit its plants. After debottle-necking, TCL has increased the PAN capacity to 25000 tpa. The Company installed a plant to manufacture 10000 tpa of maleic anhydride in 1990 based on the technology of M/s. Alusuisse Spa, Italy. In a further expansion of activities, the Company installed a plant to manufacture 2000 tpa of food acidulants based on an in-house R & D process in 1991. In May 1994, the Company received ISO-9002 accreditation for their quality system. The Company is an experienced manufacturer of PAN, having been in the business over a period of two decades. It has also established skills in marketing and distributing of PAN. The Company's emphasis on product quality has been recognised internationally - a prime indicator of this being its export growth from Rs.162 lacs in 1986 to Rs.2416.9 lacs in 1993-94 showing a compounded rate of growth exceeding 40%. The Company has shown consistent profitability. It has declared dividends every year from 1979 onward, except for 1992-93; in 1992-93, the Company made losses due to a fall in demand for PAN, though a recovery in 1993-94 enabled it to post after-tax profits and declare a 20% dividend. No merges, reorganisations or amalgamations have taken place in the past. The Company is currently undertaking an expansion of its food acidulants capacity by 3,200 tpa (primarily for manufacture of malic acid). The total project cost as appraised by ICICI is Rs. 12 crores. This project will be financed through internal accruals of Rs.3 crores and a term loan from ICICI of Rs.9 crores. 2007 - Thirumalai Chemicals Ltd has informed that Mr. A Janakiraman and Mr. P Shankar have been inducted as Additional Directors on the Company's Board, at its meeting held on October 29, 2007. 2009 - "Ms. Rita Malgaonkar has been appointed as the Company Secretary of the Company". 2010 - Mr. R. Parthasarathy, Vice-Chairman and Managing Director has been selected and approved by the Board to act as the new CEO. 2011 - Mr. Dhanpat Raj Dhariwal has been selected and approved by the Board as the Chief Executive Officer (CEO) of the Company. 2012 - Dr. S. Rama Iyer, a Board Member has been appointed as the independent Non-executive Chairman of the Company. - Mr. N. Subramanian has been appointed as additional Director on the Board of the Company. 2013 -Mr. C. G. Sethuram has been appointed as Chief Executive Officer of the Company. -Board has recommended a final dividend of Rs. 2.50/- per equity shares of Rs. 10/- each. 2014 -Mrs. Ramya Bharathram has been appointed as a Whole-time Director of the company. -Mr. Dhruv Moondhra has been appointed as Director of the company. 2017 -Thirumalai Chemicals Limited has informed that, at its meeting held on November 10, 2017 noted that the initial steps for the first phase of its Phthalic Anhydride and Derivatives project in Gujarat have commenced. -Thirumalai Chemicals Limited has informed the Exchange that the merger of the Company Wholly Owned Subsidiary M/s Tarderiv International Pte Ltd. with its own Wholly Owned Subsidiary M/s Cheminvest Pte Ltd. for administrative convenience with effect from July 01, 2017 (Certificate of confirmation of Amalgamation was issued today by the Accounting and Corporate Regulatory Authority, Singapore). The entire assets and liabilities will get transferred to the merged entity M/s Cheminvest Pte Ltd. as per the scheme and there will be no financial impact for the parent company due to the merger. 2021  -The Company has commissioned its Phthalic Anhydride plant at Dahej Gujarat. This plant will largely cater to customers in Western India.. The Company has now started initial work to add significant additional capacity and more products at site. 2024 -'TCL Intermediates Private Limited, a wholly owned subsidiary of the Company, has commenced commercial production".