The Board has given approval for the proposed expansion, the company said in a regulatory filing.
As per the proposal, DCM Shriram wants to increase the production capacity of caustic soda at its Bharuch unit from 1,015 tonne per day to 1,347 tonne.
The unit will be commissioned in April 2019, the filing added.
"The existing plants are running at their full capacity. This expansion will help in meeting growing demand and deriving economies of scale," DCM Shriram said.
The company's businesses include sugar and chemicals.