According to our (Global Info Research) latest study, the global Isothiazolinone API market size was valued at US$ 326 million in 2025 and is forecast to a readjusted size of US$ 415 million by 2032 with a CAGR of 3.6% during review period.
Isothiazolinone is an excellent water treatment agent with excellent compatibility with various corrosion inhibitors, such as chlorine, scale inhibitors and dispersants, and most anionic, cationic, and nonionic surfactants. Commercially available products are typically mixtures of 5-chloro-2-methyl-4-isothiazolin-3-one (CMI) and 2-methyl-4-isothiazolin-3-one (MI). Metal nitrites or nitrates are also added to enhance stability and prevent decomposition. Isothiazolinone acts by breaking bonds between bacterial and algal proteins, rapidly and irreversibly inhibiting their growth upon contact, leading to cell death. It exhibits strong inhibitory and bactericidal effects against common bacteria (sulfate-reducing bacteria and sludge-forming bacteria), fungi (iron-oxidizing bacteria, molds, yeasts), and algae. It boasts high bactericidal efficiency, good degradability, no residue, safe operation, excellent compatibility, strong stability, and low cost of use. At high doses, it is significantly effective in removing biosludge and is currently widely used in steelmaking, oilfield water injection, thermal power generation, papermaking, oil refining, chemicals, textiles, industrial cleaning, pesticides, cutting oils, water-based coatings, daily chemicals, inks, dyes, and leather tanning. This report studies isothiazolinone API market, defined as follows: CIT/MIT technicals (CIT/MIT with an active ingredient content ≥14%); MIT technicals (MIT with an active ingredient content ≥50%).
In 2024, global Isothiazolinone API sales reached approximately 142,560 tons, with an average global market price of around US$ 2,005 per ton.
The market driver of isothiazolinone API is primarily fueled by its broad-spectrum antimicrobial efficacy, which makes it a critical raw material in pharmaceuticals, personal care products, and industrial biocides. Increasing demand for effective preservatives in formulations such as shampoos, lotions, and cosmetics, alongside its application in controlling microbial contamination in paints, coatings, water treatment, and household cleaning products, is boosting consumption. Additionally, stricter regulations and growing awareness about hygiene and product shelf-life stability are encouraging manufacturers to adopt reliable and cost-effective antimicrobial ingredients like isothiazolinone API. Rising demand in emerging markets, coupled with continuous R&D for safer and more sustainable preservative solutions, further strengthens its market growth.
This report is a detailed and comprehensive analysis for global Isothiazolinone API market. Both quantitative and qualitative analyses are presented by manufacturers, by region & country, by Type and by Application. As the market is constantly changing, this report explores the competition, supply and demand trends, as well as key factors that contribute to its changing demands across many markets. Company profiles and product examples of selected competitors, along with market share estimates of some of the selected leaders for the year 2025, are provided.
Key Features:
Global Isothiazolinone API market size and forecasts, in consumption value ($ Million), sales quantity (Tons), and average selling prices (US$/Ton), 2021-2032
Global Isothiazolinone API market size and forecasts by region and country, in consumption value ($ Million), sales quantity (Tons), and average selling prices (US$/Ton), 2021-2032
Global Isothiazolinone API market size and forecasts, by Type and by Application, in consumption value ($ Million), sales quantity (Tons), and average selling prices (US$/Ton), 2021-2032
Global Isothiazolinone API market shares of main players, shipments in revenue ($ Million), sales quantity (Tons), and ASP (US$/Ton), 2021-2026
The Primary Objectives in This Report Are:
To determine the size of the total market opportunity of global and key countries
To assess the growth potential for Isothiazolinone API
To forecast future growth in each product and end-use market
To assess competitive factors affecting the marketplace
This report profiles key players in the global Isothiazolinone API market based on the following parameters - company overview, sales quantity, revenue, price, gross margin, product portfolio, geographical presence, and key developments. Key companies covered as a part of this study include Lanxess, Dalian Bio-Chem, Thor Group, Weifang Tianci New Materials Technology, Shanxi ZhongJie, Chemball, Shandong Yubin Chemical, Hofmann Chemie AG, Ganshu Kaimei, Xintai Yisai, etc.
This report also provides key insights about market drivers, restraints, opportunities, new product launches or approvals.
Market Segmentation
Isothiazolinone API market is split by Type and by Application. For the period 2021-2032, the growth among segments provides accurate calculations and forecasts for consumption value by Type, and by Application in terms of volume and value. This analysis can help you expand your business by targeting qualified niche markets.
Market segment by Type
MIT API
CIT/MIT API
Market segment by Application
Industrial Water Treatment
Paper Chemicals
Oilfield Chemicals
Cosmetics
Other
Major players covered
Lanxess
Dalian Bio-Chem
Thor Group
Weifang Tianci New Materials Technology
Shanxi ZhongJie
Chemball
Shandong Yubin Chemical
Hofmann Chemie AG
Ganshu Kaimei
Xintai Yisai
Market segment by region, regional analysis covers
North America (United States, Canada, and Mexico)
Europe (Germany, France, United Kingdom, Russia, Italy, and Rest of Europe)
Asia-Pacific (China, Japan, Korea, India, Southeast Asia, and Australia)
South America (Brazil, Argentina, Colombia, and Rest of South America)
Middle East & Africa (Saudi Arabia, UAE, Egypt, South Africa, and Rest of Middle East & Africa)
The content of the study subjects, includes a total of 15 chapters:
Chapter 1, to describe Isothiazolinone API product scope, market overview, market estimation caveats and base year.
Chapter 2, to profile the top manufacturers of Isothiazolinone API, with price, sales quantity, revenue, and global market share of Isothiazolinone API from 2021 to 2026.
Chapter 3, the Isothiazolinone API competitive situation, sales quantity, revenue, and global market share of top manufacturers are analyzed emphatically by landscape contrast.
Chapter 4, the Isothiazolinone API breakdown data are shown at the regional level, to show the sales quantity, consumption value, and growth by regions, from 2021 to 2032.
Chapter 5 and 6, to segment the sales by Type and by Application, with sales market share and growth rate by Type, by Application, from 2021 to 2032.
Chapter 7, 8, 9, 10 and 11, to break the sales data at the country level, with sales quantity, consumption value, and market share for key countries in the world, from 2021 to 2026.and Isothiazolinone API market forecast, by regions, by Type, and by Application, with sales and revenue, from 2027 to 2032.
Chapter 12, market dynamics, drivers, restraints, trends, and Porters Five Forces analysis.
Chapter 13, the key raw materials and key suppliers, and industry chain of Isothiazolinone API.
Chapter 14 and 15, to describe Isothiazolinone API sales channel, distributors, customers, research findings and conclusion.
Summary:
Get latest Market Research Reports on Isothiazolinone API. Industry analysis & Market Report on Isothiazolinone API is a syndicated market report, published as Global Isothiazolinone API Market 2026 by Manufacturers, Regions, Type and Application, Forecast to 2032. It is complete Research Study and Industry Analysis of Isothiazolinone API market, to understand, Market Demand, Growth, trends analysis and Factor Influencing market.