About Us

We are committed to bringing innovative and green solutions into areas of everyday life.

Clean Science and Technology Limited (‘CSTL’) is a fine and specialty chemical manufacturing company incorporated in 2003. We are among the few global organisations focused on developing ingenious technologies with unique, innovative, sustainable and cost effective catalytic manufacturing processes. Globally, we are among the largest manufacturers of certain chemicals developed in-house.
Continuous innovation, in-house R&D and focus on value engineering are the real DNA of the company. CSTL is driven by technocrat promoters and are committed to the longevity of the company. We are constantly investing in R&D, state-of-the-art manufacturing facilities, technology leadership, employee engagement, ESG and corporate governance for creating long term value for the company.

Our Purpose:


To be a global chemical company most admired for our innovative processes, performance, reliability, and unparalleled service to our customers.


To create value for our customers, stakeholders, and employees by developing processes that are sustainable and cost-effective in nature.

Core Values

We believe in building long-lasting relationships with our customers and stakeholders. Our integrity is of paramount importance to us and we are always ensuring that our products reflect our thought process of having eco-friendly manufacturing systems.

We believe that without innovation, a company cannot survive. Ideating innovative products and solutions to the existing problems are vital to us. With the world constantly changing, innovation is the ingredient that ensures both, customer satisfaction and success for a company.

The safety of our employees and customers is our top priority. We care deeply about everyone associated with us and have the most strict protocols in place when it comes to safety.

Attaining excellence in all we do is in our DNA. We are of the opinion that if one decides to do something, they should go beyond the ordinary barriers and create something that is innovative and creates value in the market.

We believe in upholding the integrity of our company and maintaining the safety of our customers. We care about the quality of products we give to our customers and ensure that everything we sell is of the highest value and quality.

Our Differentiators

Fine Intermediates


We are among the largest producers globally of critical specialty chemicals with diversified applications.

Fine Intermediates

Preferred Partner
Of Choice

We have developed strong and long term relationships with a well-diversified marquee customer base.

Fine Intermediates

Of The Art

We have multiple automated manufacturing facilities with zero liquid discharge and a strong focus on EHS.

Fine Intermediates


We are technocrat promoters supported by an excellent experienced workforce with extensive domain knowledge.

Fine Intermediates


We have a unique, innovative, sustainable, and cost-effective catalytic manufacturing process.

Fine Intermediates


Our strategic process innovation, technology, and new product development are driven by a strong in-house R&D team.

Fine Intermediates


We have witnessed a strong and consistent financial performance over the years.


In line with our vision, changed our name to Clean Science and Technology


Commercialization of MEHQ and Guaiacol


Commercialization of 4-MAP


Commercialization of Butylated Hydroxy Anisole (BHA)


Commercialized Anisole using liquid-phase technology


Incorporated india’s first, Vapour Phase Technology for manufacturing of Anisole


Commercialization of Ascorbyl Palmitate


Commercialization of (Dicyclohexylcarbodimide) DCC


Company gets listed on the stock exchanges (NSE & BSE)

Successfully developed key products in HALs series


Commercialization of Para Benzoquinone (PBQ) and Tert-butylhydroquinone (TBHQ)

Our Product

Our speciality chemical chemistry is diversified into 3 major segments – Performance Chemicals, Pharmaceutical Chemicals, and FMCG Chemical. They are an essential ingredient in daily usage products catering to agricultural, cosmetic, aromas, and food industries.

Manufacturing Details

‘Green’ or eco-friendly manufacturing processes led by differentiated catalytic technologies.
We have a unique, innovative, sustainable, and cost-effective catalytic manufacturing process for all our products. We operate from 3 manufacturing facilities. We have ensured the highest level of operational efficiency at each of these units. In line with our value of innovation and excellence, we have automated these manufacturing facilities with proven design and commercialization capability. With all our ongoing activity we make a point to follow all the local compliance and international regulatory requirements.

Geographical Presence

We take pride in being a global manufacturing company in speciality chemicals. We have built a strong global presence and customer base. Our products are present in multiple countries.