What Clean Science and Technology does

Clean Science and Technology Limited (CSTL) is a Pune, India-based specialty chemicals manufacturer incorporated in 2003 and listed on NSE and BSE since 2021 (stock symbol nse:CLEAN). The company develops and manufactures critical fine and specialty chemicals across three segments: Performance Chemicals (including HALS UV stabilizers, polymerization inhibitors such as TEMPO variants and MEHQ, and antioxidants like BHA, TBHQ, and BHT), Pharmaceutical and Agro Intermediates (including Guaiacol, DCC, Anisole, Veratrole, and Para Benzoquinone), and FMCG Chemicals (food-grade antioxidants, flavor and fragrance intermediates such as 4-MAP and L-Ascorbyl Palmitate). It serves global B2B customers across pharmaceutical, agrochemical, FMCG, cosmetics, and industrial polymer end-markets in 30+ countries, with manufacturing concentrated in Kurkumbh, Maharashtra across three production units and a fourth unit operated by wholly-owned subsidiary Clean Fino-Chem Limited.

The company's competitive positioning rests on proprietary catalytic manufacturing processes developed in-house over 15+ years of R&D at DSIR-approved labs. CSTL is the only company globally to have commercialized eco-friendly hydroxylation of anisole (producing MEHQ and Guaiacol with water as the only byproduct), India's first manufacturer of HALS UV stabilizers, and the first to deploy vapor phase technology for Anisole production in India. Manufacturing is structured around zero liquid discharge (ZLD) facilities with 55% of power consumption sourced from 10.7 MW of off-site solar capacity. The company holds ISO 9001/14001/45001, FSSC 22000, FAMI-QS, HALAL, KOSHER, FSSAI, RSPO MB certifications, REACH registration for Anisole and MEHQ, and Four Star Export House status.

Revenue is generated through direct B2B sales to enterprise customers under quote-based, relationship-driven pricing. FY26 standalone revenue was ₹815 crore (down from ₹922 crore in FY25), with EBITDA margins of 44.3% and PAT of ₹251 crore (down 14% YoY). Commercial channels include dedicated domestic India and global sales teams, with international distribution direct-to-customer from manufacturing facilities. The company has recently expanded its product surface through commercialization of HQ, Catechol, DHDT, BHT, and additional HALS variants via Clean Fino-Chem Limited, and in May 2026 approved an additional ₹200 crore investment in this subsidiary to scale capacity.

Name

Clean Science and Technology

Legal name

Clean Science and Technology Limited

Website

https://cleanscience.co.in

Company type

Public

Founded year

2003

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Clean Science and Technology Limited is a Pune-based specialty chemicals manufacturer founded in 2003, producing performance chemicals, pharmaceutical and agro intermediates, and FMCG chemicals via proprietary catalytic processes for global B2B customers across 30+ countries.

Ownership category

akta.pro rank

Product category

Specialty Chemicals

NAICS

Chemical Manufacturing (325), Other Basic Organic Chemical Manufacturing (32519), Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing (325194)

SIC

Industrial Organic Chemicals (2860), Chemicals & Allied Products (2800)

akta.pro primary industry

Flavors, Fragrances & Aroma Chemicals (IMAEABAE)

akta.pro secondary industry

Personal Care & Cosmetic Ingredients (IMAEABAJ)

Keywords

• Specialty chemicals manufacturing
• Performance chemicals
• Pharmaceutical intermediates
• UV stabilizers HALS
• Catalytic manufacturing processes

Headquarters

HQ city

Pune

HQ country

India

HQ region

Asia

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Technology or R&D, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Specialty Chemicals Manufacturing and Sales: Clean Science and Technology manufactures and sells specialty chemicals including Performance Chemicals, Pharmaceutical and Agro Intermediates, and FMCG Chemicals. Revenue is generated through direct B2B sales to global customers across diverse end-user industries including agriculture, pharmaceuticals, food and feed, cosmetics, and fragrances. The company operates manufacturing facilities in Kurkumbh, Maharashtra and serves customers in 30 countries globally.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Clean Science and Technology Limited manufactures and sells specialty chemicals — Performance Chemicals (UV stabilizers, polymerization inhibitors, antioxidants), Pharmaceutical & Agro Intermediates (API precursors and agrochemical intermediates), and FMCG Chemicals (food-grade antioxidants, flavor and fragrance intermediates) — through in-house developed catalytic manufacturing processes, supplying global pharmaceutical, agrochemical, polymer and FMCG customers from its manufacturing facilities in Kurkumbh, Maharashtra.

Product overview

Clean Science and Technology Limited (CSTL) is a fine and specialty chemical manufacturing company incorporated in 2003, offering a diversified portfolio across three major segments: Performance Chemicals, Pharmaceutical & Agro Intermediates, and FMCG Chemicals. The company develops unique, innovative, sustainable, and cost-effective catalytic manufacturing processes in-house. The Performance Chemicals segment includes UV stabilizers (HALS series), polymerization inhibitors (TEMPO variants, MEHQ), antioxidants (BHA, TBHQ, BHT, Di-TBHQ), and specialty products (DMS, Clean AntiOX 962). The Pharmaceutical & Agro Intermediates segment covers API precursors (Guaiacol, DCC, Anisole, Veratrole), herbicide intermediates (Para Benzoquinone), and other specialty chemicals. The FMCG Chemicals segment provides food-grade antioxidants (BHA, TBHQ, L-Ascorbyl Palmitate), flavor/fragrance intermediates (4-MAP, Ortho Methoxy Toluene), and other specialty ingredients. The company operates through its wholly-owned subsidiary Clean Fino-Chem Limited, which manufactures HALS stabilizers and other performance chemicals. All products are manufactured using eco-friendly catalytic processes with zero liquid discharge.

Differentiator

Problem solved

Functional benefit

Brands

• Clean Fino-Chem: Wholly-owned subsidiary manufacturing HALS series specialty chemicals
• Clean Light Stab
• Clean AntiOX
• CSTL ESOS

Products and services

• Clean AntiOX 962 A performance chemical and antioxidant (CAS NO: 101-96-2) used to inhibit polymerization in water treatment processes and as a stabilizer in fuels including aviation-grade jet fuel; also protects turbine oils, hydraulic fluids, lubricating oils and greases from degradation. Target customers include fuel additive formulators, water treatment companies and lubricant manufacturers.
• 4-oxo TEMPO (Inhibitor 702) A nitroxide radical used as a polymerization inhibitor for acrylates, acrylic acid, methacrylates, styrenics and olefins; effective in stabilizing acrylonitrile, styrene and butadiene during monomer purification, storage and high-temperature processing. Target customers are monomer producers and polymer manufacturers.
• 4-Butoxy TEMPO (Inhibitor 710B) A highly effective polymerization inhibitor for polyolefin substances and derivatives including acrylonitrile, styrene, acrylates, methacrylates, acrylic acid and butadiene during production, separation and refining. Target customers are monomer and polymer manufacturers.
• Clean Light Stab 770 (HALS) India's first HALS (Hindered Amine Light Stabilizer) product providing outstanding long-term UV stability for polymers including polypropylene, EPDM, polystyrene, ABS, SAN, ASA and polyurethanes through a radical trapping mechanism. Target customers are polymer and plastics manufacturers.
• 4-Hydroxy Tempo A polymerization inhibitor used in acrylate, methacrylate, acrylic, acrylonitrile, styrene and butadiene processing, and in water treatment applications. Target customers include monomer producers and water treatment chemical formulators.
• MEHQ (Monomethyl Ether of Hydroquinone) A polymerization inhibitor used in the manufacturing of acrylic acids, acrylates, methacrylic, VAM, styrene monomer and unsaturated polyesters; produced via CSTL's unique commercial hydroxylation of anisole process with only water as a by-product. Target customers are global monomer and polymer manufacturers.
• Butylated Hydroxy Anisole (BHA) An antioxidant used in food, feed, nutrition, pharmaceuticals, cosmetics, rubber and petroleum products; manufactured using a sulfur-free process with MEHQ as starting material, avoiding use of Di-Methyl Sulphate. Target customers include food and feed manufacturers, pharmaceutical companies, cosmetics producers and petroleum additive companies.
• L-Ascorbyl Palmitate An antioxidant used in infant food formulations, breakfast cereals, cosmetics, food supplements, vitamin C supplements, margarine, fats and oils; also used in personal care products; US FDA registered. Target customers are food, nutrition, personal care and pharmaceutical manufacturers.
• 2,5-Di-Tertiary Butyl Hydroquinone (Di-TBHQ) An inhibitor, antioxidant and stabilizer used as food antioxidant, preservative, rubber antioxidant, paint stabilizer and anti-skinning agent. Target customers include food manufacturers, rubber processors, paint manufacturers and industrial chemical formulators.
• Tertiary Butyl Hydroquinone (TBHQ) An antioxidant used as a food additive, edible oil stabilizer, and in pharmaceutical intermediates and organic synthesis. Target customers are food manufacturers, edible oil processors and pharmaceutical companies.
• Dimethyl Sebacate (DMS) A plasticizer, intermediate for UV stabilizers and pharmaceuticals, softening agent, and solvent for cellulosic resins, synthetic resins and rubbers. Target customers include polymer, pharmaceutical and coatings manufacturers.
• BHT - Butylated Hydroxytoluene An oil-soluble antioxidant (CAS NO: 128-37-0) that prevents oxidation of fats, oils and other molecules by donating hydrogen atoms to free radicals. Target customers include food, feed, lubricant and polymer manufacturers.
• Guaiacol A co-product from hydroxylation of anisole used as chemical intermediate for APIs in cough syrup, flavors (Eugenol and Vanillin), perfumery, food materials, crop protection and as reducing agent for biocatalytic reactions. Target customers include pharmaceutical, flavor & fragrance, agrochemical and food manufacturers.
• Veratrole An organic compound derived from pyrocatechol with applications in agrochemical and pharmaceutical industries for crop protection and as a raw material. Target customers are agrochemical and pharmaceutical manufacturers.
• Dicyclohexylcarbodiimide (DCC) A powerful dehydrating agent used for preparation of amides, esters and anhydrides; in anti-retroviral drugs, peptide and nucleic synthesis, and synthesis of acid anhydrides, aldehydes, ketones and isocyanates. Target customers are pharmaceutical manufacturers and research-driven chemistry buyers.
• Anisole A key starting material for agrochemicals, flavors, fragrances and pharmaceuticals; precursor to synthetic anethole, perfumes and insect pheromones; registered as TII in REACH regulation. Target customers are agrochemical, flavor & fragrance and pharmaceutical manufacturers.
• Para Di-Methoxy Benzene (1,4-DMB / PDMB) An intermediate in dyes, pigments, flavors, fragrances and agrochemicals with a sweet floral aroma used in fragrances and for synthesis of organic compounds. Target customers include dye, pigment, flavor, fragrance and agrochemical manufacturers.
• Para Benzoquinone (PBQ / p-BQ) A chemical intermediate, polymerization inhibitor and oxidizing agent used in the agrochemical and monomer industry for herbicide manufacturing and as a multi-functional oxidant in diesel. Target customers are agrochemical and monomer manufacturers.
• Ortho Methoxy Toluene A key intermediate in specialty fragrances, polar aprotic solvent, flavoring agent and intermediate in agrochemicals (CAS NO: 578-58-5). Target customers are fragrance, flavor and agrochemical manufacturers.
• 4-Methoxy Acetophenone (4-MAP) An aromatic compound with sweet, fruity, nutty flavor similar to vanilla, used as an intermediate in UV filters for sunscreens, cosmetics, spices, medicine and food flavoring. Target customers are cosmetics, personal care and flavor manufacturers.
• Barbituric Acid A vital building block in synthesis of agrochemicals, biologically active compounds, intermediate for Pigment Yellow, and for barbiturate drugs (sedatives, hypnotics, anticonvulsants). Target customers include pharmaceutical and agrochemical manufacturers and pigment producers.
• HALS UV Stabilizers Series (Clean Light Stab 770, 944, 622, 119, 783, 2020) India's first HALS (Hindered Amine Light Stabilizer) product line including Clean Light Stab 770, 944, 622, 119, 783 and 2020; prevents UV degradation across various polymer applications. Target customers are polymer, plastics and rubber manufacturers.

Quantifiable outcome

• 55% renewable energy share in power consumption from 10.7 MW solar capacity
• +2 more outcomes

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Clean Fino-Chem LimitedcoreOthers · 14 May 2026Clean Fino-Chem Limited is a wholly-owned subsidiary of Clean Science and Technology. The company approved an additional ₹200 crore investment in Clean Fino-Chem Limited in May 2026. The subsidiary focuses on manufacturing HALS stabilizers and specialty chemicals, with Unit 4 dedicated to its operations at Kurkumbh. Commercial production of HALS series commenced at the subsidiary.

Scale indicators7 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• Navin Fluorine International: Indian specialty fluorochemicals and intermediates manufacturer with proprietary process technology, strong export presence, and pharma/agro customer base. Comparable technology-led specialty chemical positioning and global B2B sales model.
• PI Industries: Indian agrochemical and specialty intermediates company with strong R&D, global customer relationships, and contract manufacturing. Overlaps with CSTL's pharmaceutical and agro intermediates segment and comparable export-driven B2B model.
• Atul Limited: Diversified Indian specialty chemicals and intermediates company serving pharmaceuticals, agriculture, and performance chemicals. Comparable product breadth across intermediates, similar export-oriented B2B model, and overlapping end-markets.
• Vinati Organics: Indian specialty chemicals maker focused on intermediates including antioxidants and polymerization inhibitors (IB, ATBS, amines). Direct overlap with CSTL's MEHQ, BHA, and TEMPO polymerization inhibitor portfolio.
• Songwon Industrial: Korean specialty chemicals company and one of the world's largest HALS and UV stabilizer producers. Direct competitor to CSTL's Clean Light Stab HALS series in polymer additive markets globally.
• Aarti Industries: Indian specialty chemicals manufacturer producing intermediates for pharmaceuticals, agrochemicals, and polymers. Closely comparable in customer segments, B2B sales motion, and specialty intermediate technology base; CSTL is smaller but more margin-accretive.
• Jubilant Ingrevia: Indian specialty chemicals producer focused on intermediates for pharma, agro, nutrition, and personal care. Direct overlap with CSTL's three product segments and comparable customer industries globally.
• Sudarshan Chemical Industries: Indian pigments and specialty chemicals manufacturer headquartered in Pune, with B2B global customer base. CSTL board member Pradeep Rathi serves as director at Sudarshan, indicating direct industry overlap and comparable specialty chemical positioning.

Broad incumbents

• SRF Limited: Large diversified Indian chemicals conglomerate spanning specialty intermediates, fluorochemicals, packaging films, and technical textiles. Overlaps with CSTL in specialty intermediates and pharma chemicals but at significantly larger scale and broader portfolio.
• BASF SE: Global specialty chemicals incumbent with extensive portfolio in antioxidants (e.g., Irganox), UV stabilizers (Tinuvin/HALS), and intermediates. Sets the technology benchmark CSTL competes against in HALS and antioxidant markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/cleanscienceInd
• LinkedInlinkedin.com/company/clean-science-and-technology-pvt-ltd-

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Clean Science and Technology