The Thirumalai Group comprises of five organizations:

TCL also operates a Liquid Storage & Distribution Terminal at the Chennai port.


In 1944, Chemidye started an agency and distribution house for European companies like BASF, Honeywell, and Atlas Chemicals as an exclusive distributor in India. It developed a leading position in the distribution of dyes and pigments, solvents, food ingredients, pharmaceuticals and textile additives.

In 1983, it transformed itself into a manufacturing company to make plasticizers and solvents. For the past 20 years, it has produced esters and specialties for the personal care and special materials markets. TCL grew from Chemidye and in 2004 the two companies merged. It has seen quick growth in products, scale, and a global network aided by TCL’s people, infrastructure, and systems.


For the past 50 years, Ultramarine has been manufacturing a range of inorganic pigments, detergents, and cosmetic grade surfactants.



Based in Malaysia, OOSB’s is a large manufacturer of Maleic Anhydride.



Lapiz is an IT and BPO services provider that operates from four delivery centers in India, having over a thousand employees.



Since 1982, TCL operates a large a large, multi-product Liquid Storage Terminal at Chennai Port, to receive Petrochemicals directly from ships at 3 berths, store and load the material into railway tankers to transport it to the final destination. It is rated among one of the best operated petrochemical terminals in India.


1944: Founders N. S. Iyengar & N. R. Swamy started the Chemidye Trading Company to import & distribute chemicals and dyes in India.

1959: Based on the relationship Chemidye had with Bayer, the founders set up Ultramarine & Pigments Ltd, to manufacture inorganic pigments at Ambattur, Chennai.

1971: Ultramarine & Pigments Ltd expands with a synthetic detergent & sulfonation plant at Ranipet.

1973-76: Thirumalai Chemicals Limited ( TCL ) builds a Phthalic Anhydride plant at Ranipet, under license from Wacker Chemie GmBH.

1982: TCL builds a Petrochemical Storage & Distribution Terminal at Chennai Port.

1983: Chemidye starts manufacturing Plasticizers and Esters.

1986: TCL increases its Phthalic Anhydride production capacity and starts manufacturing Maleic Anhydride from Phthalic Anhydride plant effluent.

1991: TCL builds a Benzene based Maleic Anhydride plant.

1992: TCL scales up & commercializes Food Ingredients technology.

1996: TCL increases its Phthalic Anhydride & Food Ingredients production capacity.

1997: TCL starts a Butane based Maleic Anhydride plant in Malaysia .

1999: Ultramarine & Pigments sets up Lapiz Digital Services,to address the nascent BPO market in the US & Europe .

2004: TCL increases its Food Ingredients production capacity.

2007: TCL closes down its benzene based Maleic Anhydride production at Ranipet.

2012: TCL acquires the Malaysia Maleic Anhydride plant through its subsidiary Optimistic Organic Sdn Bhd.

2015: Optimistic Organic Sdn Bhd increases its Maleic Anhydride production capacity.