Transpek Industry Ltd is a specialty-chemical maker that has spent six decades turning two reactive elements - chlorine and sulphur - into a catalogue of high-purity intermediates the world’s polymer, pharma and agrochemical giants cannot easily replace. It began in 1965 as an acrylic-sheet manufacturer, pivoted into chemicals three years later, and in 2012 made the defining call to walk away from bulk commodities and bet instead on diversified acid chlorides for tightly regulated, high-value applications. The recurring approach is visible in everything that followed: own the chemistry through in-house R&D, lock in a global anchor customer with a dedicated plant, and let that relationship pull the rest of the portfolio into export markets - today international sales account for more than four-fifths of revenue.
Business segments
A single-engine specialty-chemical house built on chlorinated intermediates - one multipurpose plant, roughly 20 products, and a 10-year anchor contract that turned it into a global acid-chloride supplier.
1. Chlorinated intermediates: the molecule factory behind polymers, pills and crop protection
One integrated site makes acid chlorides and alkyl chlorides for customers who use them as building blocks - the company earns on every kilogram sold, on contract-manufacturing fees, and on job-work charges, with the largest chunk tied to a cost-plus anchor contract that gave it global visibility.
- One plant, many products - the entire manufacturing operation runs from a single 100-acre site at Ekalbara, Vadodara, with a total nameplate capacity of 66,000 metric tonnes per annum, of which roughly half is for external sale and the rest feeds captive consumption. The equipment is multipurpose and multiproduct, so the same vessels can switch between different acid chlorides as demand shifts.
- The anchor contract is the cornerstone - a 10-year exclusive supply agreement with an unnamed global chemical giant, running since January 2018 from a dedicated facility, gave the company “global recognition and visibility” and was earnings-accretive from the start. That relationship, plus a cost-plus pricing model on a large volume of business, partially shields margins when input costs rise.
- Three ways to get paid - revenue comes from direct product sales, contract manufacturing for global clients in pharma, agrochemicals and specialty chemicals, and job-work arrangements where the company deploys its chlorination know-how on someone else’s feedstock. Pricing is renegotiated monthly or quarterly in the acid-chloride market, and a significant chunk of logistics cost is borne directly by customers.
- Polymers dominate the order book - by application, polymer intermediates contributed 63.5% of FY26 sales, with pharma and specialty chemicals at roughly 10% each and the rest spread across dyes, surfactants and other uses. The polymer-grade acid chlorides go into monomers that end up in automotive, defence, aircraft, construction and firefighting materials.
- The portfolio is narrow but deep - about 20 products make up the catalogue: 14 regulars and roughly six semi-regulars produced when demand surfaces. New acid chlorides take two-and-a-half to three years to commercialise because they go into critical applications that require customer validation, and over the past three to four years five or six new ones have been introduced.
2. In-house technology and process safety: the know-why behind the know-how
Every product is made with processes invented by the company’s own R&D team, backed by a dedicated process-safety unit - this is the engine that lets one plant serve sixteen countries without a single licensing royalty.
- Home-grown chemistry - the company’s DSIR-approved R&D facility runs gram-lab, kilo-lab and pilot-plant stages to scale up processes before they hit the factory floor, and it is accredited to host PhD researchers from Maharaja Sayajirao University of Vadodara. The team is now pushing beyond chlorination into nitration, Friedel-Crafts reactions and non-chlorinated routes.
- Closed-loop recycling - a proprietary recycling system recovers and reuses by-products in other processes, and agro-waste is burned as fuel for steam generation, which keeps input costs down and waste streams thin.
- Safety as a separate function - a dedicated Process Safety Management Team, staffed with chemical engineers, chemists and automation professionals, was set up years before it became common in Indian chemical companies. It runs hazard analyses on every product and process, performs dispersion modelling, and enforces a formal Management of Change process before any new or altered process starts up.
- The ISO-tank fleet is a moat - the company operates more than 600 ISO tanks with its own repair and cleaning stations, and has helped customers switch from drums to tank-container logistics using its technical competence. All packing and labelling follows IMDG and IATA dangerous-goods rules, which is table-stakes for exporting to regulated markets.
Group structure and partners
Transpek is the listed entity inside the Excel (Shroff) group, with a single operating subsidiary, a legacy stake in a silox-maker, and a small but growing interest in captive renewable power.
- The listed company, Transpek Industry Limited, trades on BSE; the promoter group held just under 59% as of early 2020, with Anshul Specialty Molecules Private Limited (24.64%) and Kamaljyot Investments Limited (12.58%) as the largest blocks.
- A wholly owned subsidiary, Transpek Creative Chemistry Private Limited, was incorporated in January 2020 to pursue new business opportunities. A former UK subsidiary that handled EU REACH registrations was dissolved in December 2021 after Brexit made its purpose redundant.
- The company holds equity stakes in Transpek-Silox Industry Private Limited (unquoted) and Excel Industries Limited (quoted), both enterprises linked to key management personnel or their relatives. It also has a supply agreement with Silox India Private Limited for oleum and sulphur dioxide.
- In August 2025 the board approved an investment of up to Rs 4 crore for a 3-4% stake in First Energy Eleven Private Limited, a Thermax SPV that will supply 2.8 MW of captive solar and wind power to the Ekalbara plant. A separate hybrid-power subscription is expected to deliver benefits from FY26-27 onward.